Adding upstream version 6.7.7.upstream/6.7.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

31 files changed, 2112 insertions, 640 deletions

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 869e535fae..a4ac4b4777 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -203,6 +203,15 @@ config DRM_PANEL_ILITEK_ILI9881C
 	  Say Y if you want to enable support for panels based on the
 	  Ilitek ILI9881c controller.
 
+config DRM_PANEL_ILITEK_ILI9882T
+	tristate "Ilitek ILI9882t-based panels"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y if you want to enable support for panels based on the
+	  Ilitek ILI9882t controller.
+
 config DRM_PANEL_INNOLUX_EJ030NA
         tristate "Innolux EJ030NA 320x480 LCD panel"
         depends on OF && SPI
@@ -244,6 +253,17 @@ config DRM_PANEL_JDI_LT070ME05000
 	  The panel has a 1200(RGB)×1920 (WUXGA) resolution and uses
 	  24 bit per pixel.
 
+config DRM_PANEL_JDI_LPM102A188A
+	tristate "JDI LPM102A188A DSI panel"
+	depends on OF && GPIOLIB
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for JDI LPM102A188A DSI
+	  command mode panel as found in Google Pixel C devices.
+	  The panel has a 2560×1800 resolution. It provides a MIPI DSI interface
+	  to the host.
+
 config DRM_PANEL_JDI_R63452
 	tristate "JDI R63452 Full HD DSI panel"
 	depends on OF
@@ -505,6 +525,17 @@ config DRM_PANEL_RAYDIUM_RM68200
 	  Say Y here if you want to enable support for Raydium RM68200
 	  720x1280 DSI video mode panel.
 
+config DRM_PANEL_RAYDIUM_RM692E5
+	tristate "Raydium RM692E5-based DSI panel"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_HELPER
+	help
+	  Say Y here if you want to enable support for Raydium RM692E5-based
+	  display panels, such as the one found in the Fairphone 5 smartphone.
+
 config DRM_PANEL_RONBO_RB070D30
 	tristate "Ronbo Electronics RB070D30 panel"
 	depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 433e93d579..d10c3de51c 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -18,10 +18,12 @@ obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) += panel-himax-hx8394.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o
+obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9882T) += panel-ilitek-ili9882t.o
 obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o
 obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o
 obj-$(CONFIG_DRM_PANEL_JADARD_JD9365DA_H3) += panel-jadard-jd9365da-h3.o
 obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o
+obj-$(CONFIG_DRM_PANEL_JDI_LPM102A188A) += panel-jdi-lpm102a188a.o
 obj-$(CONFIG_DRM_PANEL_JDI_R63452) += panel-jdi-fhd-r63452.o
 obj-$(CONFIG_DRM_PANEL_KHADAS_TS050) += panel-khadas-ts050.o
 obj-$(CONFIG_DRM_PANEL_KINGDISPLAY_KD097D04) += panel-kingdisplay-kd097d04.o
@@ -48,6 +50,7 @@ obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
 obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
 obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o
 obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
+obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM692E5) += panel-raydium-rm692e5.o
 obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o
diff --git a/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c b/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c
index 075a7af81e..bcaa63d195 100644
--- a/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c
+++ b/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c
@@ -16,7 +16,6 @@ struct tm5p5_nt35596 {
 	struct mipi_dsi_device *dsi;
 	struct regulator_bulk_data supplies[2];
 	struct gpio_desc *reset_gpio;
-	bool prepared;
 };
 
 static inline struct tm5p5_nt35596 *to_tm5p5_nt35596(struct drm_panel *panel)
@@ -112,9 +111,6 @@ static int tm5p5_nt35596_prepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 	if (ret < 0) {
 		dev_err(dev, "Failed to enable regulators: %d\n", ret);
@@ -132,7 +128,6 @@ static int tm5p5_nt35596_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	ctx->prepared = true;
 	return 0;
 }
 
@@ -142,9 +137,6 @@ static int tm5p5_nt35596_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = tm5p5_nt35596_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
@@ -153,7 +145,6 @@ static int tm5p5_nt35596_unprepare(struct drm_panel *panel)
 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
 			       ctx->supplies);
 
-	ctx->prepared = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c b/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
index 90098b753e..e77db8597e 100644
--- a/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
+++ b/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
@@ -34,7 +34,6 @@ struct boe_bf060y8m_aj0 {
 	struct mipi_dsi_device *dsi;
 	struct regulator_bulk_data vregs[BF060Y8M_VREG_MAX];
 	struct gpio_desc *reset_gpio;
-	bool prepared;
 };
 
 static inline
@@ -129,9 +128,6 @@ static int boe_bf060y8m_aj0_prepare(struct drm_panel *panel)
 	struct device *dev = &boe->dsi->dev;
 	int ret;
 
-	if (boe->prepared)
-		return 0;
-
 	/*
 	 * Enable EL Driving Voltage first - doing that at the beginning
 	 * or at the end of the power sequence doesn't matter, so enable
@@ -166,7 +162,6 @@ static int boe_bf060y8m_aj0_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	boe->prepared = true;
 	return 0;
 
 err_vci:
@@ -186,9 +181,6 @@ static int boe_bf060y8m_aj0_unprepare(struct drm_panel *panel)
 	struct device *dev = &boe->dsi->dev;
 	int ret;
 
-	if (!boe->prepared)
-		return 0;
-
 	ret = boe_bf060y8m_aj0_off(boe);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
@@ -196,7 +188,6 @@ static int boe_bf060y8m_aj0_unprepare(struct drm_panel *panel)
 	gpiod_set_value_cansleep(boe->reset_gpio, 1);
 	ret = regulator_bulk_disable(ARRAY_SIZE(boe->vregs), boe->vregs);
 
-	boe->prepared = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index 29e63cdfb8..c4c0f08e92 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -1368,346 +1368,6 @@ static const struct panel_init_cmd starry_himax83102_j02_init_cmd[] = {
 	{},
 };
 
-static const struct panel_init_cmd starry_ili9882t_init_cmd[] = {
-	_INIT_DELAY_CMD(5),
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x01),
-	_INIT_DCS_CMD(0x00, 0x42),
-	_INIT_DCS_CMD(0x01, 0x11),
-	_INIT_DCS_CMD(0x02, 0x00),
-	_INIT_DCS_CMD(0x03, 0x00),
-
-	_INIT_DCS_CMD(0x04, 0x01),
-	_INIT_DCS_CMD(0x05, 0x11),
-	_INIT_DCS_CMD(0x06, 0x00),
-	_INIT_DCS_CMD(0x07, 0x00),
-
-	_INIT_DCS_CMD(0x08, 0x80),
-	_INIT_DCS_CMD(0x09, 0x81),
-	_INIT_DCS_CMD(0x0A, 0x71),
-	_INIT_DCS_CMD(0x0B, 0x00),
-
-	_INIT_DCS_CMD(0x0C, 0x00),
-	_INIT_DCS_CMD(0x0E, 0x1A),
-
-	_INIT_DCS_CMD(0x24, 0x00),
-	_INIT_DCS_CMD(0x25, 0x00),
-	_INIT_DCS_CMD(0x26, 0x00),
-	_INIT_DCS_CMD(0x27, 0x00),
-
-	_INIT_DCS_CMD(0x2C, 0xD4),
-	_INIT_DCS_CMD(0xB9, 0x40),
-
-	_INIT_DCS_CMD(0xB0, 0x11),
-
-	_INIT_DCS_CMD(0xE6, 0x32),
-	_INIT_DCS_CMD(0xD1, 0x30),
-
-	_INIT_DCS_CMD(0xD6, 0x55),
-
-	_INIT_DCS_CMD(0xD0, 0x01),
-	_INIT_DCS_CMD(0xE3, 0x93),
-	_INIT_DCS_CMD(0xE4, 0x00),
-	_INIT_DCS_CMD(0xE5, 0x80),
-
-	_INIT_DCS_CMD(0x31, 0x07),
-	_INIT_DCS_CMD(0x32, 0x07),
-	_INIT_DCS_CMD(0x33, 0x07),
-	_INIT_DCS_CMD(0x34, 0x07),
-	_INIT_DCS_CMD(0x35, 0x07),
-	_INIT_DCS_CMD(0x36, 0x01),
-	_INIT_DCS_CMD(0x37, 0x00),
-	_INIT_DCS_CMD(0x38, 0x28),
-	_INIT_DCS_CMD(0x39, 0x29),
-	_INIT_DCS_CMD(0x3A, 0x11),
-	_INIT_DCS_CMD(0x3B, 0x13),
-	_INIT_DCS_CMD(0x3C, 0x15),
-	_INIT_DCS_CMD(0x3D, 0x17),
-	_INIT_DCS_CMD(0x3E, 0x09),
-	_INIT_DCS_CMD(0x3F, 0x0D),
-	_INIT_DCS_CMD(0x40, 0x02),
-	_INIT_DCS_CMD(0x41, 0x02),
-	_INIT_DCS_CMD(0x42, 0x02),
-	_INIT_DCS_CMD(0x43, 0x02),
-	_INIT_DCS_CMD(0x44, 0x02),
-	_INIT_DCS_CMD(0x45, 0x02),
-	_INIT_DCS_CMD(0x46, 0x02),
-
-	_INIT_DCS_CMD(0x47, 0x07),
-	_INIT_DCS_CMD(0x48, 0x07),
-	_INIT_DCS_CMD(0x49, 0x07),
-	_INIT_DCS_CMD(0x4A, 0x07),
-	_INIT_DCS_CMD(0x4B, 0x07),
-	_INIT_DCS_CMD(0x4C, 0x01),
-	_INIT_DCS_CMD(0x4D, 0x00),
-	_INIT_DCS_CMD(0x4E, 0x28),
-	_INIT_DCS_CMD(0x4F, 0x29),
-	_INIT_DCS_CMD(0x50, 0x10),
-	_INIT_DCS_CMD(0x51, 0x12),
-	_INIT_DCS_CMD(0x52, 0x14),
-	_INIT_DCS_CMD(0x53, 0x16),
-	_INIT_DCS_CMD(0x54, 0x08),
-	_INIT_DCS_CMD(0x55, 0x0C),
-	_INIT_DCS_CMD(0x56, 0x02),
-	_INIT_DCS_CMD(0x57, 0x02),
-	_INIT_DCS_CMD(0x58, 0x02),
-	_INIT_DCS_CMD(0x59, 0x02),
-	_INIT_DCS_CMD(0x5A, 0x02),
-	_INIT_DCS_CMD(0x5B, 0x02),
-	_INIT_DCS_CMD(0x5C, 0x02),
-
-	_INIT_DCS_CMD(0x61, 0x07),
-	_INIT_DCS_CMD(0x62, 0x07),
-	_INIT_DCS_CMD(0x63, 0x07),
-	_INIT_DCS_CMD(0x64, 0x07),
-	_INIT_DCS_CMD(0x65, 0x07),
-	_INIT_DCS_CMD(0x66, 0x01),
-	_INIT_DCS_CMD(0x67, 0x00),
-	_INIT_DCS_CMD(0x68, 0x28),
-	_INIT_DCS_CMD(0x69, 0x29),
-	_INIT_DCS_CMD(0x6A, 0x16),
-	_INIT_DCS_CMD(0x6B, 0x14),
-	_INIT_DCS_CMD(0x6C, 0x12),
-	_INIT_DCS_CMD(0x6D, 0x10),
-	_INIT_DCS_CMD(0x6E, 0x0C),
-	_INIT_DCS_CMD(0x6F, 0x08),
-	_INIT_DCS_CMD(0x70, 0x02),
-	_INIT_DCS_CMD(0x71, 0x02),
-	_INIT_DCS_CMD(0x72, 0x02),
-	_INIT_DCS_CMD(0x73, 0x02),
-	_INIT_DCS_CMD(0x74, 0x02),
-	_INIT_DCS_CMD(0x75, 0x02),
-	_INIT_DCS_CMD(0x76, 0x02),
-
-	_INIT_DCS_CMD(0x77, 0x07),
-	_INIT_DCS_CMD(0x78, 0x07),
-	_INIT_DCS_CMD(0x79, 0x07),
-	_INIT_DCS_CMD(0x7A, 0x07),
-	_INIT_DCS_CMD(0x7B, 0x07),
-	_INIT_DCS_CMD(0x7C, 0x01),
-	_INIT_DCS_CMD(0x7D, 0x00),
-	_INIT_DCS_CMD(0x7E, 0x28),
-	_INIT_DCS_CMD(0x7F, 0x29),
-	_INIT_DCS_CMD(0x80, 0x17),
-	_INIT_DCS_CMD(0x81, 0x15),
-	_INIT_DCS_CMD(0x82, 0x13),
-	_INIT_DCS_CMD(0x83, 0x11),
-	_INIT_DCS_CMD(0x84, 0x0D),
-	_INIT_DCS_CMD(0x85, 0x09),
-	_INIT_DCS_CMD(0x86, 0x02),
-	_INIT_DCS_CMD(0x87, 0x07),
-	_INIT_DCS_CMD(0x88, 0x07),
-	_INIT_DCS_CMD(0x89, 0x07),
-	_INIT_DCS_CMD(0x8A, 0x07),
-	_INIT_DCS_CMD(0x8B, 0x07),
-	_INIT_DCS_CMD(0x8C, 0x07),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x02),
-	_INIT_DCS_CMD(0x29, 0x3A),
-	_INIT_DCS_CMD(0x2A, 0x3B),
-
-	_INIT_DCS_CMD(0x06, 0x01),
-	_INIT_DCS_CMD(0x07, 0x01),
-	_INIT_DCS_CMD(0x08, 0x0C),
-	_INIT_DCS_CMD(0x09, 0x44),
-
-	_INIT_DCS_CMD(0x3C, 0x0A),
-	_INIT_DCS_CMD(0x39, 0x11),
-	_INIT_DCS_CMD(0x3D, 0x00),
-	_INIT_DCS_CMD(0x3A, 0x0C),
-	_INIT_DCS_CMD(0x3B, 0x44),
-
-	_INIT_DCS_CMD(0x53, 0x1F),
-	_INIT_DCS_CMD(0x5E, 0x40),
-	_INIT_DCS_CMD(0x84, 0x00),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x03),
-	_INIT_DCS_CMD(0x20, 0x01),
-	_INIT_DCS_CMD(0x21, 0x3C),
-	_INIT_DCS_CMD(0x22, 0xFA),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x0A),
-	_INIT_DCS_CMD(0xE0, 0x01),
-	_INIT_DCS_CMD(0xE2, 0x01),
-	_INIT_DCS_CMD(0xE5, 0x91),
-	_INIT_DCS_CMD(0xE6, 0x3C),
-	_INIT_DCS_CMD(0xE7, 0x00),
-	_INIT_DCS_CMD(0xE8, 0xFA),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x12),
-	_INIT_DCS_CMD(0x87, 0x2C),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x05),
-	_INIT_DCS_CMD(0x73, 0xE5),
-	_INIT_DCS_CMD(0x7F, 0x6B),
-	_INIT_DCS_CMD(0x6D, 0xA4),
-	_INIT_DCS_CMD(0x79, 0x54),
-	_INIT_DCS_CMD(0x69, 0x97),
-	_INIT_DCS_CMD(0x6A, 0x97),
-	_INIT_DCS_CMD(0xA5, 0x3F),
-	_INIT_DCS_CMD(0x61, 0xDA),
-	_INIT_DCS_CMD(0xA7, 0xF1),
-	_INIT_DCS_CMD(0x5F, 0x01),
-	_INIT_DCS_CMD(0x62, 0x3F),
-	_INIT_DCS_CMD(0x1D, 0x90),
-	_INIT_DCS_CMD(0x86, 0x87),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x06),
-	_INIT_DCS_CMD(0xC0, 0x80),
-	_INIT_DCS_CMD(0xC1, 0x07),
-	_INIT_DCS_CMD(0xCA, 0x58),
-	_INIT_DCS_CMD(0xCB, 0x02),
-	_INIT_DCS_CMD(0xCE, 0x58),
-	_INIT_DCS_CMD(0xCF, 0x02),
-	_INIT_DCS_CMD(0x67, 0x60),
-	_INIT_DCS_CMD(0x10, 0x00),
-	_INIT_DCS_CMD(0x92, 0x22),
-	_INIT_DCS_CMD(0xD3, 0x08),
-	_INIT_DCS_CMD(0xD6, 0x55),
-	_INIT_DCS_CMD(0xDC, 0x38),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x08),
-	_INIT_DCS_CMD(0xE0, 0x00, 0x10, 0x2A, 0x4D, 0x61, 0x56, 0x6A, 0x6E, 0x79, 0x76, 0x8F, 0x95, 0x98, 0xAE, 0xAA, 0xB2, 0xBB, 0xCE, 0xC6, 0xBD, 0xD5, 0xE2, 0xE8),
-	_INIT_DCS_CMD(0xE1, 0x00, 0x10, 0x2A, 0x4D, 0x61, 0x56, 0x6A, 0x6E, 0x79, 0x76, 0x8F, 0x95, 0x98, 0xAE, 0xAA, 0xB2, 0xBB, 0xCE, 0xC6, 0xBD, 0xD5, 0xE2, 0xE8),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x04),
-	_INIT_DCS_CMD(0xBA, 0x81),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x0C),
-	_INIT_DCS_CMD(0x00, 0x02),
-	_INIT_DCS_CMD(0x01, 0x00),
-	_INIT_DCS_CMD(0x02, 0x03),
-	_INIT_DCS_CMD(0x03, 0x01),
-	_INIT_DCS_CMD(0x04, 0x03),
-	_INIT_DCS_CMD(0x05, 0x02),
-	_INIT_DCS_CMD(0x06, 0x04),
-	_INIT_DCS_CMD(0x07, 0x03),
-	_INIT_DCS_CMD(0x08, 0x03),
-	_INIT_DCS_CMD(0x09, 0x04),
-	_INIT_DCS_CMD(0x0A, 0x04),
-	_INIT_DCS_CMD(0x0B, 0x05),
-	_INIT_DCS_CMD(0x0C, 0x04),
-	_INIT_DCS_CMD(0x0D, 0x06),
-	_INIT_DCS_CMD(0x0E, 0x05),
-	_INIT_DCS_CMD(0x0F, 0x07),
-	_INIT_DCS_CMD(0x10, 0x04),
-	_INIT_DCS_CMD(0x11, 0x08),
-	_INIT_DCS_CMD(0x12, 0x05),
-	_INIT_DCS_CMD(0x13, 0x09),
-	_INIT_DCS_CMD(0x14, 0x05),
-	_INIT_DCS_CMD(0x15, 0x0A),
-	_INIT_DCS_CMD(0x16, 0x06),
-	_INIT_DCS_CMD(0x17, 0x0B),
-	_INIT_DCS_CMD(0x18, 0x05),
-	_INIT_DCS_CMD(0x19, 0x0C),
-	_INIT_DCS_CMD(0x1A, 0x06),
-	_INIT_DCS_CMD(0x1B, 0x0D),
-	_INIT_DCS_CMD(0x1C, 0x06),
-	_INIT_DCS_CMD(0x1D, 0x0E),
-	_INIT_DCS_CMD(0x1E, 0x07),
-	_INIT_DCS_CMD(0x1F, 0x0F),
-	_INIT_DCS_CMD(0x20, 0x06),
-	_INIT_DCS_CMD(0x21, 0x10),
-	_INIT_DCS_CMD(0x22, 0x07),
-	_INIT_DCS_CMD(0x23, 0x11),
-	_INIT_DCS_CMD(0x24, 0x07),
-	_INIT_DCS_CMD(0x25, 0x12),
-	_INIT_DCS_CMD(0x26, 0x08),
-	_INIT_DCS_CMD(0x27, 0x13),
-	_INIT_DCS_CMD(0x28, 0x07),
-	_INIT_DCS_CMD(0x29, 0x14),
-	_INIT_DCS_CMD(0x2A, 0x08),
-	_INIT_DCS_CMD(0x2B, 0x15),
-	_INIT_DCS_CMD(0x2C, 0x08),
-	_INIT_DCS_CMD(0x2D, 0x16),
-	_INIT_DCS_CMD(0x2E, 0x09),
-	_INIT_DCS_CMD(0x2F, 0x17),
-	_INIT_DCS_CMD(0x30, 0x08),
-	_INIT_DCS_CMD(0x31, 0x18),
-	_INIT_DCS_CMD(0x32, 0x09),
-	_INIT_DCS_CMD(0x33, 0x19),
-	_INIT_DCS_CMD(0x34, 0x09),
-	_INIT_DCS_CMD(0x35, 0x1A),
-	_INIT_DCS_CMD(0x36, 0x0A),
-	_INIT_DCS_CMD(0x37, 0x1B),
-	_INIT_DCS_CMD(0x38, 0x0A),
-	_INIT_DCS_CMD(0x39, 0x1C),
-	_INIT_DCS_CMD(0x3A, 0x0A),
-	_INIT_DCS_CMD(0x3B, 0x1D),
-	_INIT_DCS_CMD(0x3C, 0x0A),
-	_INIT_DCS_CMD(0x3D, 0x1E),
-	_INIT_DCS_CMD(0x3E, 0x0A),
-	_INIT_DCS_CMD(0x3F, 0x1F),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x04),
-	_INIT_DCS_CMD(0xBA, 0x01),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x0E),
-	_INIT_DCS_CMD(0x02, 0x0C),
-	_INIT_DCS_CMD(0x20, 0x10),
-	_INIT_DCS_CMD(0x25, 0x16),
-	_INIT_DCS_CMD(0x26, 0xE0),
-	_INIT_DCS_CMD(0x27, 0x00),
-	_INIT_DCS_CMD(0x29, 0x71),
-	_INIT_DCS_CMD(0x2A, 0x46),
-	_INIT_DCS_CMD(0x2B, 0x1F),
-	_INIT_DCS_CMD(0x2D, 0xC7),
-	_INIT_DCS_CMD(0x31, 0x02),
-	_INIT_DCS_CMD(0x32, 0xDF),
-	_INIT_DCS_CMD(0x33, 0x5A),
-	_INIT_DCS_CMD(0x34, 0xC0),
-	_INIT_DCS_CMD(0x35, 0x5A),
-	_INIT_DCS_CMD(0x36, 0xC0),
-	_INIT_DCS_CMD(0x38, 0x65),
-	_INIT_DCS_CMD(0x80, 0x3E),
-	_INIT_DCS_CMD(0x81, 0xA0),
-	_INIT_DCS_CMD(0xB0, 0x01),
-	_INIT_DCS_CMD(0xB1, 0xCC),
-	_INIT_DCS_CMD(0xC0, 0x12),
-	_INIT_DCS_CMD(0xC2, 0xCC),
-	_INIT_DCS_CMD(0xC3, 0xCC),
-	_INIT_DCS_CMD(0xC4, 0xCC),
-	_INIT_DCS_CMD(0xC5, 0xCC),
-	_INIT_DCS_CMD(0xC6, 0xCC),
-	_INIT_DCS_CMD(0xC7, 0xCC),
-	_INIT_DCS_CMD(0xC8, 0xCC),
-	_INIT_DCS_CMD(0xC9, 0xCC),
-	_INIT_DCS_CMD(0x30, 0x00),
-	_INIT_DCS_CMD(0x00, 0x81),
-	_INIT_DCS_CMD(0x08, 0x02),
-	_INIT_DCS_CMD(0x09, 0x00),
-	_INIT_DCS_CMD(0x07, 0x21),
-	_INIT_DCS_CMD(0x04, 0x10),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x1E),
-	_INIT_DCS_CMD(0x60, 0x00),
-	_INIT_DCS_CMD(0x64, 0x00),
-	_INIT_DCS_CMD(0x6D, 0x00),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x0B),
-	_INIT_DCS_CMD(0xA6, 0x44),
-	_INIT_DCS_CMD(0xA7, 0xB6),
-	_INIT_DCS_CMD(0xA8, 0x03),
-	_INIT_DCS_CMD(0xA9, 0x03),
-	_INIT_DCS_CMD(0xAA, 0x51),
-	_INIT_DCS_CMD(0xAB, 0x51),
-	_INIT_DCS_CMD(0xAC, 0x04),
-	_INIT_DCS_CMD(0xBD, 0x92),
-	_INIT_DCS_CMD(0xBE, 0xA1),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x05),
-	_INIT_DCS_CMD(0x86, 0x87),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x06),
-	_INIT_DCS_CMD(0x92, 0x22),
-
-	_INIT_DCS_CMD(0xFF, 0x98, 0x82, 0x00),
-	_INIT_DCS_CMD(0x11),
-	_INIT_DELAY_CMD(120),
-	_INIT_DCS_CMD(0x29),
-	_INIT_DELAY_CMD(20),
-	{},
-};
-
 static inline struct boe_panel *to_boe_panel(struct drm_panel *panel)
 {
 	return container_of(panel, struct boe_panel, base);
@@ -2135,34 +1795,6 @@ static const struct panel_desc starry_himax83102_j02_desc = {
 	.lp11_before_reset = true,
 };
 
-static const struct drm_display_mode starry_ili9882t_default_mode = {
-	.clock = 165280,
-	.hdisplay = 1200,
-	.hsync_start = 1200 + 72,
-	.hsync_end = 1200 + 72 + 30,
-	.htotal = 1200 + 72 + 30 + 72,
-	.vdisplay = 1920,
-	.vsync_start = 1920 + 68,
-	.vsync_end = 1920 + 68 + 2,
-	.vtotal = 1920 + 68 + 2 + 10,
-	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
-};
-
-static const struct panel_desc starry_ili9882t_desc = {
-	.modes = &starry_ili9882t_default_mode,
-	.bpc = 8,
-	.size = {
-		.width_mm = 141,
-		.height_mm = 226,
-	},
-	.lanes = 4,
-	.format = MIPI_DSI_FMT_RGB888,
-	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
-		      MIPI_DSI_MODE_LPM,
-	.init_cmds = starry_ili9882t_init_cmd,
-	.lp11_before_reset = true,
-};
-
 static int boe_panel_get_modes(struct drm_panel *panel,
 			       struct drm_connector *connector)
 {
@@ -2339,9 +1971,6 @@ static const struct of_device_id boe_of_match[] = {
 	{ .compatible = "starry,himax83102-j02",
 	  .data = &starry_himax83102_j02_desc
 	},
-	{ .compatible = "starry,ili9882t",
-	  .data = &starry_ili9882t_desc
-	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, boe_of_match);
diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index 7dc6fb7308..cba5a93e60 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -203,6 +203,9 @@ struct edp_panel_entry {
 
 	/** @name: Name of this panel (for printing to logs). */
 	const char *name;
+
+	/** @override_edid_mode: Override the mode obtained by edid. */
+	const struct drm_display_mode *override_edid_mode;
 };
 
 struct panel_edp {
@@ -301,6 +304,24 @@ static unsigned int panel_edp_get_display_modes(struct panel_edp *panel,
 	return num;
 }
 
+static int panel_edp_override_edid_mode(struct panel_edp *panel,
+					struct drm_connector *connector,
+					const struct drm_display_mode *override_mode)
+{
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, override_mode);
+	if (!mode) {
+		dev_err(panel->base.dev, "failed to add additional mode\n");
+		return 0;
+	}
+
+	mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+	return 1;
+}
+
 static int panel_edp_get_non_edid_modes(struct panel_edp *panel,
 					struct drm_connector *connector)
 {
@@ -568,6 +589,9 @@ static int panel_edp_get_modes(struct drm_panel *panel,
 {
 	struct panel_edp *p = to_panel_edp(panel);
 	int num = 0;
+	bool has_override_edid_mode = p->detected_panel &&
+				      p->detected_panel != ERR_PTR(-EINVAL) &&
+				      p->detected_panel->override_edid_mode;
 
 	/* probe EDID if a DDC bus is available */
 	if (p->ddc) {
@@ -575,9 +599,18 @@ static int panel_edp_get_modes(struct drm_panel *panel,
 
 		if (!p->edid)
 			p->edid = drm_get_edid(connector, p->ddc);
-
-		if (p->edid)
-			num += drm_add_edid_modes(connector, p->edid);
+		if (p->edid) {
+			if (has_override_edid_mode) {
+				/*
+				 * override_edid_mode is specified. Use
+				 * override_edid_mode instead of from edid.
+				 */
+				num += panel_edp_override_edid_mode(p, connector,
+						p->detected_panel->override_edid_mode);
+			} else {
+				num += drm_add_edid_modes(connector, p->edid);
+			}
+		}
 
 		pm_runtime_mark_last_busy(panel->dev);
 		pm_runtime_put_autosuspend(panel->dev);
@@ -1830,6 +1863,15 @@ static const struct panel_delay delay_200_500_e200 = {
 	.delay = _delay \
 }
 
+#define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \
+{ \
+	.name = _name, \
+	.panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
+					     product_id), \
+	.delay = _delay, \
+	.override_edid_mode = _mode \
+}
+
 /*
  * This table is used to figure out power sequencing delays for panels that
  * are detected by EDID. Entries here may point to entries in the
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
index 61c872f0f7..4a6dcfd781 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
@@ -325,11 +325,6 @@ static struct regmap_bus ili9322_regmap_bus = {
 	.val_format_endian_default = REGMAP_ENDIAN_BIG,
 };
 
-static bool ili9322_volatile_reg(struct device *dev, unsigned int reg)
-{
-	return false;
-}
-
 static bool ili9322_writeable_reg(struct device *dev, unsigned int reg)
 {
 	/* Just register 0 is read-only */
@@ -342,8 +337,7 @@ static const struct regmap_config ili9322_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = 0x44,
-	.cache_type = REGCACHE_RBTREE,
-	.volatile_reg = ili9322_volatile_reg,
+	.cache_type = REGCACHE_MAPLE,
 	.writeable_reg = ili9322_writeable_reg,
 };
 
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
new file mode 100644
index 0000000000..267a530704
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
@@ -0,0 +1,779 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Panels based on the Ilitek ILI9882T display controller.
+ */
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_connector.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+/*
+ * Use this descriptor struct to describe different panels using the
+ * Ilitek ILI9882T display controller.
+ */
+struct panel_desc {
+	const struct drm_display_mode *modes;
+	unsigned int bpc;
+
+	/**
+	 * @width_mm: width of the panel's active display area
+	 * @height_mm: height of the panel's active display area
+	 */
+	struct {
+		unsigned int width_mm;
+		unsigned int height_mm;
+	} size;
+
+	unsigned long mode_flags;
+	enum mipi_dsi_pixel_format format;
+	const struct panel_init_cmd *init_cmds;
+	unsigned int lanes;
+};
+
+struct ili9882t {
+	struct drm_panel base;
+	struct mipi_dsi_device *dsi;
+
+	const struct panel_desc *desc;
+
+	enum drm_panel_orientation orientation;
+	struct regulator *pp3300;
+	struct regulator *pp1800;
+	struct regulator *avee;
+	struct regulator *avdd;
+	struct gpio_desc *enable_gpio;
+};
+
+enum dsi_cmd_type {
+	INIT_DCS_CMD,
+	DELAY_CMD,
+};
+
+struct panel_init_cmd {
+	enum dsi_cmd_type type;
+	size_t len;
+	const char *data;
+};
+
+#define _INIT_DCS_CMD(...) { \
+	.type = INIT_DCS_CMD, \
+	.len = sizeof((char[]){__VA_ARGS__}), \
+	.data = (char[]){__VA_ARGS__} }
+
+#define _INIT_DELAY_CMD(...) { \
+	.type = DELAY_CMD,\
+	.len = sizeof((char[]){__VA_ARGS__}), \
+	.data = (char[]){__VA_ARGS__} }
+
+/* ILI9882-specific commands, add new commands as you decode them */
+#define ILI9882T_DCS_SWITCH_PAGE	0xFF
+
+#define _INIT_SWITCH_PAGE_CMD(page) \
+	_INIT_DCS_CMD(ILI9882T_DCS_SWITCH_PAGE, 0x98, 0x82, (page))
+
+static const struct panel_init_cmd starry_ili9882t_init_cmd[] = {
+	_INIT_DELAY_CMD(5),
+	_INIT_SWITCH_PAGE_CMD(0x01),
+	_INIT_DCS_CMD(0x00, 0x42),
+	_INIT_DCS_CMD(0x01, 0x11),
+	_INIT_DCS_CMD(0x02, 0x00),
+	_INIT_DCS_CMD(0x03, 0x00),
+
+	_INIT_DCS_CMD(0x04, 0x01),
+	_INIT_DCS_CMD(0x05, 0x11),
+	_INIT_DCS_CMD(0x06, 0x00),
+	_INIT_DCS_CMD(0x07, 0x00),
+
+	_INIT_DCS_CMD(0x08, 0x80),
+	_INIT_DCS_CMD(0x09, 0x81),
+	_INIT_DCS_CMD(0x0A, 0x71),
+	_INIT_DCS_CMD(0x0B, 0x00),
+
+	_INIT_DCS_CMD(0x0C, 0x00),
+	_INIT_DCS_CMD(0x0E, 0x1A),
+
+	_INIT_DCS_CMD(0x24, 0x00),
+	_INIT_DCS_CMD(0x25, 0x00),
+	_INIT_DCS_CMD(0x26, 0x00),
+	_INIT_DCS_CMD(0x27, 0x00),
+
+	_INIT_DCS_CMD(0x2C, 0xD4),
+	_INIT_DCS_CMD(0xB9, 0x40),
+
+	_INIT_DCS_CMD(0xB0, 0x11),
+
+	_INIT_DCS_CMD(0xE6, 0x32),
+	_INIT_DCS_CMD(0xD1, 0x30),
+
+	_INIT_DCS_CMD(0xD6, 0x55),
+
+	_INIT_DCS_CMD(0xD0, 0x01),
+	_INIT_DCS_CMD(0xE3, 0x93),
+	_INIT_DCS_CMD(0xE4, 0x00),
+	_INIT_DCS_CMD(0xE5, 0x80),
+
+	_INIT_DCS_CMD(0x31, 0x07),
+	_INIT_DCS_CMD(0x32, 0x07),
+	_INIT_DCS_CMD(0x33, 0x07),
+	_INIT_DCS_CMD(0x34, 0x07),
+	_INIT_DCS_CMD(0x35, 0x07),
+	_INIT_DCS_CMD(0x36, 0x01),
+	_INIT_DCS_CMD(0x37, 0x00),
+	_INIT_DCS_CMD(0x38, 0x28),
+	_INIT_DCS_CMD(0x39, 0x29),
+	_INIT_DCS_CMD(0x3A, 0x11),
+	_INIT_DCS_CMD(0x3B, 0x13),
+	_INIT_DCS_CMD(0x3C, 0x15),
+	_INIT_DCS_CMD(0x3D, 0x17),
+	_INIT_DCS_CMD(0x3E, 0x09),
+	_INIT_DCS_CMD(0x3F, 0x0D),
+	_INIT_DCS_CMD(0x40, 0x02),
+	_INIT_DCS_CMD(0x41, 0x02),
+	_INIT_DCS_CMD(0x42, 0x02),
+	_INIT_DCS_CMD(0x43, 0x02),
+	_INIT_DCS_CMD(0x44, 0x02),
+	_INIT_DCS_CMD(0x45, 0x02),
+	_INIT_DCS_CMD(0x46, 0x02),
+
+	_INIT_DCS_CMD(0x47, 0x07),
+	_INIT_DCS_CMD(0x48, 0x07),
+	_INIT_DCS_CMD(0x49, 0x07),
+	_INIT_DCS_CMD(0x4A, 0x07),
+	_INIT_DCS_CMD(0x4B, 0x07),
+	_INIT_DCS_CMD(0x4C, 0x01),
+	_INIT_DCS_CMD(0x4D, 0x00),
+	_INIT_DCS_CMD(0x4E, 0x28),
+	_INIT_DCS_CMD(0x4F, 0x29),
+	_INIT_DCS_CMD(0x50, 0x10),
+	_INIT_DCS_CMD(0x51, 0x12),
+	_INIT_DCS_CMD(0x52, 0x14),
+	_INIT_DCS_CMD(0x53, 0x16),
+	_INIT_DCS_CMD(0x54, 0x08),
+	_INIT_DCS_CMD(0x55, 0x0C),
+	_INIT_DCS_CMD(0x56, 0x02),
+	_INIT_DCS_CMD(0x57, 0x02),
+	_INIT_DCS_CMD(0x58, 0x02),
+	_INIT_DCS_CMD(0x59, 0x02),
+	_INIT_DCS_CMD(0x5A, 0x02),
+	_INIT_DCS_CMD(0x5B, 0x02),
+	_INIT_DCS_CMD(0x5C, 0x02),
+
+	_INIT_DCS_CMD(0x61, 0x07),
+	_INIT_DCS_CMD(0x62, 0x07),
+	_INIT_DCS_CMD(0x63, 0x07),
+	_INIT_DCS_CMD(0x64, 0x07),
+	_INIT_DCS_CMD(0x65, 0x07),
+	_INIT_DCS_CMD(0x66, 0x01),
+	_INIT_DCS_CMD(0x67, 0x00),
+	_INIT_DCS_CMD(0x68, 0x28),
+	_INIT_DCS_CMD(0x69, 0x29),
+	_INIT_DCS_CMD(0x6A, 0x16),
+	_INIT_DCS_CMD(0x6B, 0x14),
+	_INIT_DCS_CMD(0x6C, 0x12),
+	_INIT_DCS_CMD(0x6D, 0x10),
+	_INIT_DCS_CMD(0x6E, 0x0C),
+	_INIT_DCS_CMD(0x6F, 0x08),
+	_INIT_DCS_CMD(0x70, 0x02),
+	_INIT_DCS_CMD(0x71, 0x02),
+	_INIT_DCS_CMD(0x72, 0x02),
+	_INIT_DCS_CMD(0x73, 0x02),
+	_INIT_DCS_CMD(0x74, 0x02),
+	_INIT_DCS_CMD(0x75, 0x02),
+	_INIT_DCS_CMD(0x76, 0x02),
+
+	_INIT_DCS_CMD(0x77, 0x07),
+	_INIT_DCS_CMD(0x78, 0x07),
+	_INIT_DCS_CMD(0x79, 0x07),
+	_INIT_DCS_CMD(0x7A, 0x07),
+	_INIT_DCS_CMD(0x7B, 0x07),
+	_INIT_DCS_CMD(0x7C, 0x01),
+	_INIT_DCS_CMD(0x7D, 0x00),
+	_INIT_DCS_CMD(0x7E, 0x28),
+	_INIT_DCS_CMD(0x7F, 0x29),
+	_INIT_DCS_CMD(0x80, 0x17),
+	_INIT_DCS_CMD(0x81, 0x15),
+	_INIT_DCS_CMD(0x82, 0x13),
+	_INIT_DCS_CMD(0x83, 0x11),
+	_INIT_DCS_CMD(0x84, 0x0D),
+	_INIT_DCS_CMD(0x85, 0x09),
+	_INIT_DCS_CMD(0x86, 0x02),
+	_INIT_DCS_CMD(0x87, 0x07),
+	_INIT_DCS_CMD(0x88, 0x07),
+	_INIT_DCS_CMD(0x89, 0x07),
+	_INIT_DCS_CMD(0x8A, 0x07),
+	_INIT_DCS_CMD(0x8B, 0x07),
+	_INIT_DCS_CMD(0x8C, 0x07),
+
+	_INIT_SWITCH_PAGE_CMD(0x02),
+	_INIT_DCS_CMD(0x29, 0x3A),
+	_INIT_DCS_CMD(0x2A, 0x3B),
+
+	_INIT_DCS_CMD(0x06, 0x01),
+	_INIT_DCS_CMD(0x07, 0x01),
+	_INIT_DCS_CMD(0x08, 0x0C),
+	_INIT_DCS_CMD(0x09, 0x44),
+
+	_INIT_DCS_CMD(0x3C, 0x0A),
+	_INIT_DCS_CMD(0x39, 0x11),
+	_INIT_DCS_CMD(0x3D, 0x00),
+	_INIT_DCS_CMD(0x3A, 0x0C),
+	_INIT_DCS_CMD(0x3B, 0x44),
+
+	_INIT_DCS_CMD(0x53, 0x1F),
+	_INIT_DCS_CMD(0x5E, 0x40),
+	_INIT_DCS_CMD(0x84, 0x00),
+
+	_INIT_SWITCH_PAGE_CMD(0x03),
+	_INIT_DCS_CMD(0x20, 0x01),
+	_INIT_DCS_CMD(0x21, 0x3C),
+	_INIT_DCS_CMD(0x22, 0xFA),
+
+	_INIT_SWITCH_PAGE_CMD(0x0A),
+	_INIT_DCS_CMD(0xE0, 0x01),
+	_INIT_DCS_CMD(0xE2, 0x01),
+	_INIT_DCS_CMD(0xE5, 0x91),
+	_INIT_DCS_CMD(0xE6, 0x3C),
+	_INIT_DCS_CMD(0xE7, 0x00),
+	_INIT_DCS_CMD(0xE8, 0xFA),
+
+	_INIT_SWITCH_PAGE_CMD(0x12),
+	_INIT_DCS_CMD(0x87, 0x2C),
+
+	_INIT_SWITCH_PAGE_CMD(0x05),
+	_INIT_DCS_CMD(0x73, 0xE5),
+	_INIT_DCS_CMD(0x7F, 0x6B),
+	_INIT_DCS_CMD(0x6D, 0xA4),
+	_INIT_DCS_CMD(0x79, 0x54),
+	_INIT_DCS_CMD(0x69, 0x97),
+	_INIT_DCS_CMD(0x6A, 0x97),
+	_INIT_DCS_CMD(0xA5, 0x3F),
+	_INIT_DCS_CMD(0x61, 0xDA),
+	_INIT_DCS_CMD(0xA7, 0xF1),
+	_INIT_DCS_CMD(0x5F, 0x01),
+	_INIT_DCS_CMD(0x62, 0x3F),
+	_INIT_DCS_CMD(0x1D, 0x90),
+	_INIT_DCS_CMD(0x86, 0x87),
+
+	_INIT_SWITCH_PAGE_CMD(0x06),
+	_INIT_DCS_CMD(0xC0, 0x80),
+	_INIT_DCS_CMD(0xC1, 0x07),
+	_INIT_DCS_CMD(0xCA, 0x58),
+	_INIT_DCS_CMD(0xCB, 0x02),
+	_INIT_DCS_CMD(0xCE, 0x58),
+	_INIT_DCS_CMD(0xCF, 0x02),
+	_INIT_DCS_CMD(0x67, 0x60),
+	_INIT_DCS_CMD(0x10, 0x00),
+	_INIT_DCS_CMD(0x92, 0x22),
+	_INIT_DCS_CMD(0xD3, 0x08),
+	_INIT_DCS_CMD(0xD6, 0x55),
+	_INIT_DCS_CMD(0xDC, 0x38),
+
+	_INIT_SWITCH_PAGE_CMD(0x08),
+	_INIT_DCS_CMD(0xE0, 0x00, 0x10, 0x2A, 0x4D, 0x61, 0x56, 0x6A, 0x6E, 0x79, 0x76, 0x8F, 0x95, 0x98, 0xAE, 0xAA, 0xB2, 0xBB, 0xCE, 0xC6, 0xBD, 0xD5, 0xE2, 0xE8),
+	_INIT_DCS_CMD(0xE1, 0x00, 0x10, 0x2A, 0x4D, 0x61, 0x56, 0x6A, 0x6E, 0x79, 0x76, 0x8F, 0x95, 0x98, 0xAE, 0xAA, 0xB2, 0xBB, 0xCE, 0xC6, 0xBD, 0xD5, 0xE2, 0xE8),
+
+	_INIT_SWITCH_PAGE_CMD(0x04),
+	_INIT_DCS_CMD(0xBA, 0x81),
+
+	_INIT_SWITCH_PAGE_CMD(0x0C),
+	_INIT_DCS_CMD(0x00, 0x02),
+	_INIT_DCS_CMD(0x01, 0x00),
+	_INIT_DCS_CMD(0x02, 0x03),
+	_INIT_DCS_CMD(0x03, 0x01),
+	_INIT_DCS_CMD(0x04, 0x03),
+	_INIT_DCS_CMD(0x05, 0x02),
+	_INIT_DCS_CMD(0x06, 0x04),
+	_INIT_DCS_CMD(0x07, 0x03),
+	_INIT_DCS_CMD(0x08, 0x03),
+	_INIT_DCS_CMD(0x09, 0x04),
+	_INIT_DCS_CMD(0x0A, 0x04),
+	_INIT_DCS_CMD(0x0B, 0x05),
+	_INIT_DCS_CMD(0x0C, 0x04),
+	_INIT_DCS_CMD(0x0D, 0x06),
+	_INIT_DCS_CMD(0x0E, 0x05),
+	_INIT_DCS_CMD(0x0F, 0x07),
+	_INIT_DCS_CMD(0x10, 0x04),
+	_INIT_DCS_CMD(0x11, 0x08),
+	_INIT_DCS_CMD(0x12, 0x05),
+	_INIT_DCS_CMD(0x13, 0x09),
+	_INIT_DCS_CMD(0x14, 0x05),
+	_INIT_DCS_CMD(0x15, 0x0A),
+	_INIT_DCS_CMD(0x16, 0x06),
+	_INIT_DCS_CMD(0x17, 0x0B),
+	_INIT_DCS_CMD(0x18, 0x05),
+	_INIT_DCS_CMD(0x19, 0x0C),
+	_INIT_DCS_CMD(0x1A, 0x06),
+	_INIT_DCS_CMD(0x1B, 0x0D),
+	_INIT_DCS_CMD(0x1C, 0x06),
+	_INIT_DCS_CMD(0x1D, 0x0E),
+	_INIT_DCS_CMD(0x1E, 0x07),
+	_INIT_DCS_CMD(0x1F, 0x0F),
+	_INIT_DCS_CMD(0x20, 0x06),
+	_INIT_DCS_CMD(0x21, 0x10),
+	_INIT_DCS_CMD(0x22, 0x07),
+	_INIT_DCS_CMD(0x23, 0x11),
+	_INIT_DCS_CMD(0x24, 0x07),
+	_INIT_DCS_CMD(0x25, 0x12),
+	_INIT_DCS_CMD(0x26, 0x08),
+	_INIT_DCS_CMD(0x27, 0x13),
+	_INIT_DCS_CMD(0x28, 0x07),
+	_INIT_DCS_CMD(0x29, 0x14),
+	_INIT_DCS_CMD(0x2A, 0x08),
+	_INIT_DCS_CMD(0x2B, 0x15),
+	_INIT_DCS_CMD(0x2C, 0x08),
+	_INIT_DCS_CMD(0x2D, 0x16),
+	_INIT_DCS_CMD(0x2E, 0x09),
+	_INIT_DCS_CMD(0x2F, 0x17),
+	_INIT_DCS_CMD(0x30, 0x08),
+	_INIT_DCS_CMD(0x31, 0x18),
+	_INIT_DCS_CMD(0x32, 0x09),
+	_INIT_DCS_CMD(0x33, 0x19),
+	_INIT_DCS_CMD(0x34, 0x09),
+	_INIT_DCS_CMD(0x35, 0x1A),
+	_INIT_DCS_CMD(0x36, 0x0A),
+	_INIT_DCS_CMD(0x37, 0x1B),
+	_INIT_DCS_CMD(0x38, 0x0A),
+	_INIT_DCS_CMD(0x39, 0x1C),
+	_INIT_DCS_CMD(0x3A, 0x0A),
+	_INIT_DCS_CMD(0x3B, 0x1D),
+	_INIT_DCS_CMD(0x3C, 0x0A),
+	_INIT_DCS_CMD(0x3D, 0x1E),
+	_INIT_DCS_CMD(0x3E, 0x0A),
+	_INIT_DCS_CMD(0x3F, 0x1F),
+
+	_INIT_SWITCH_PAGE_CMD(0x04),
+	_INIT_DCS_CMD(0xBA, 0x01),
+
+	_INIT_SWITCH_PAGE_CMD(0x0E),
+	_INIT_DCS_CMD(0x02, 0x0C),
+	_INIT_DCS_CMD(0x20, 0x10),
+	_INIT_DCS_CMD(0x25, 0x16),
+	_INIT_DCS_CMD(0x26, 0xE0),
+	_INIT_DCS_CMD(0x27, 0x00),
+	_INIT_DCS_CMD(0x29, 0x71),
+	_INIT_DCS_CMD(0x2A, 0x46),
+	_INIT_DCS_CMD(0x2B, 0x1F),
+	_INIT_DCS_CMD(0x2D, 0xC7),
+	_INIT_DCS_CMD(0x31, 0x02),
+	_INIT_DCS_CMD(0x32, 0xDF),
+	_INIT_DCS_CMD(0x33, 0x5A),
+	_INIT_DCS_CMD(0x34, 0xC0),
+	_INIT_DCS_CMD(0x35, 0x5A),
+	_INIT_DCS_CMD(0x36, 0xC0),
+	_INIT_DCS_CMD(0x38, 0x65),
+	_INIT_DCS_CMD(0x80, 0x3E),
+	_INIT_DCS_CMD(0x81, 0xA0),
+	_INIT_DCS_CMD(0xB0, 0x01),
+	_INIT_DCS_CMD(0xB1, 0xCC),
+	_INIT_DCS_CMD(0xC0, 0x12),
+	_INIT_DCS_CMD(0xC2, 0xCC),
+	_INIT_DCS_CMD(0xC3, 0xCC),
+	_INIT_DCS_CMD(0xC4, 0xCC),
+	_INIT_DCS_CMD(0xC5, 0xCC),
+	_INIT_DCS_CMD(0xC6, 0xCC),
+	_INIT_DCS_CMD(0xC7, 0xCC),
+	_INIT_DCS_CMD(0xC8, 0xCC),
+	_INIT_DCS_CMD(0xC9, 0xCC),
+	_INIT_DCS_CMD(0x30, 0x00),
+	_INIT_DCS_CMD(0x00, 0x81),
+	_INIT_DCS_CMD(0x08, 0x02),
+	_INIT_DCS_CMD(0x09, 0x00),
+	_INIT_DCS_CMD(0x07, 0x21),
+	_INIT_DCS_CMD(0x04, 0x10),
+
+	_INIT_SWITCH_PAGE_CMD(0x1E),
+	_INIT_DCS_CMD(0x60, 0x00),
+	_INIT_DCS_CMD(0x64, 0x00),
+	_INIT_DCS_CMD(0x6D, 0x00),
+
+	_INIT_SWITCH_PAGE_CMD(0x0B),
+	_INIT_DCS_CMD(0xA6, 0x44),
+	_INIT_DCS_CMD(0xA7, 0xB6),
+	_INIT_DCS_CMD(0xA8, 0x03),
+	_INIT_DCS_CMD(0xA9, 0x03),
+	_INIT_DCS_CMD(0xAA, 0x51),
+	_INIT_DCS_CMD(0xAB, 0x51),
+	_INIT_DCS_CMD(0xAC, 0x04),
+	_INIT_DCS_CMD(0xBD, 0x92),
+	_INIT_DCS_CMD(0xBE, 0xA1),
+
+	_INIT_SWITCH_PAGE_CMD(0x05),
+	_INIT_DCS_CMD(0x86, 0x87),
+
+	_INIT_SWITCH_PAGE_CMD(0x06),
+	_INIT_DCS_CMD(0x92, 0x22),
+
+	_INIT_SWITCH_PAGE_CMD(0x00),
+	_INIT_DCS_CMD(MIPI_DCS_EXIT_SLEEP_MODE),
+	_INIT_DELAY_CMD(120),
+	_INIT_DCS_CMD(MIPI_DCS_SET_DISPLAY_ON),
+	_INIT_DELAY_CMD(20),
+	{},
+};
+
+static inline struct ili9882t *to_ili9882t(struct drm_panel *panel)
+{
+	return container_of(panel, struct ili9882t, base);
+}
+
+static int ili9882t_init_dcs_cmd(struct ili9882t *ili)
+{
+	struct mipi_dsi_device *dsi = ili->dsi;
+	struct drm_panel *panel = &ili->base;
+	int i, err = 0;
+
+	if (ili->desc->init_cmds) {
+		const struct panel_init_cmd *init_cmds = ili->desc->init_cmds;
+
+		for (i = 0; init_cmds[i].len != 0; i++) {
+			const struct panel_init_cmd *cmd = &init_cmds[i];
+
+			switch (cmd->type) {
+			case DELAY_CMD:
+				msleep(cmd->data[0]);
+				err = 0;
+				break;
+
+			case INIT_DCS_CMD:
+				err = mipi_dsi_dcs_write(dsi, cmd->data[0],
+							 cmd->len <= 1 ? NULL :
+							 &cmd->data[1],
+							 cmd->len - 1);
+				break;
+
+			default:
+				err = -EINVAL;
+			}
+
+			if (err < 0) {
+				dev_err(panel->dev,
+					"failed to write command %u\n", i);
+				return err;
+			}
+		}
+	}
+	return 0;
+}
+
+static int ili9882t_switch_page(struct mipi_dsi_device *dsi, u8 page)
+{
+	int ret;
+	const struct panel_init_cmd cmd = _INIT_SWITCH_PAGE_CMD(page);
+
+	ret = mipi_dsi_dcs_write(dsi, cmd.data[0],
+				 cmd.len <= 1 ? NULL :
+				 &cmd.data[1],
+				 cmd.len - 1);
+	if (ret) {
+		dev_err(&dsi->dev,
+			"error switching panel controller page (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int ili9882t_enter_sleep_mode(struct ili9882t *ili)
+{
+	struct mipi_dsi_device *dsi = ili->dsi;
+	int ret;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int ili9882t_disable(struct drm_panel *panel)
+{
+	struct ili9882t *ili = to_ili9882t(panel);
+	struct mipi_dsi_device *dsi = ili->dsi;
+	int ret;
+
+	ili9882t_switch_page(dsi, 0x00);
+	ret = ili9882t_enter_sleep_mode(ili);
+	if (ret < 0) {
+		dev_err(panel->dev, "failed to set panel off: %d\n", ret);
+		return ret;
+	}
+
+	msleep(150);
+
+	return 0;
+}
+
+static int ili9882t_unprepare(struct drm_panel *panel)
+{
+	struct ili9882t *ili = to_ili9882t(panel);
+
+	gpiod_set_value(ili->enable_gpio, 0);
+	usleep_range(1000, 2000);
+	regulator_disable(ili->avee);
+	regulator_disable(ili->avdd);
+	usleep_range(5000, 7000);
+	regulator_disable(ili->pp1800);
+	regulator_disable(ili->pp3300);
+
+	return 0;
+}
+
+static int ili9882t_prepare(struct drm_panel *panel)
+{
+	struct ili9882t *ili = to_ili9882t(panel);
+	int ret;
+
+	gpiod_set_value(ili->enable_gpio, 0);
+	usleep_range(1000, 1500);
+
+	ret = regulator_enable(ili->pp3300);
+	if (ret < 0)
+		return ret;
+
+	ret = regulator_enable(ili->pp1800);
+	if (ret < 0)
+		return ret;
+
+	usleep_range(3000, 5000);
+
+	ret = regulator_enable(ili->avdd);
+	if (ret < 0)
+		goto poweroff1v8;
+	ret = regulator_enable(ili->avee);
+	if (ret < 0)
+		goto poweroffavdd;
+
+	usleep_range(10000, 11000);
+
+	// MIPI needs to keep the LP11 state before the lcm_reset pin is pulled high
+	mipi_dsi_dcs_nop(ili->dsi);
+	usleep_range(1000, 2000);
+
+	gpiod_set_value(ili->enable_gpio, 1);
+	usleep_range(1000, 2000);
+	gpiod_set_value(ili->enable_gpio, 0);
+	msleep(50);
+	gpiod_set_value(ili->enable_gpio, 1);
+	usleep_range(6000, 10000);
+
+	ret = ili9882t_init_dcs_cmd(ili);
+	if (ret < 0) {
+		dev_err(panel->dev, "failed to init panel: %d\n", ret);
+		goto poweroff;
+	}
+
+	return 0;
+
+poweroff:
+	regulator_disable(ili->avee);
+poweroffavdd:
+	regulator_disable(ili->avdd);
+poweroff1v8:
+	usleep_range(5000, 7000);
+	regulator_disable(ili->pp1800);
+	gpiod_set_value(ili->enable_gpio, 0);
+
+	return ret;
+}
+
+static int ili9882t_enable(struct drm_panel *panel)
+{
+	msleep(130);
+	return 0;
+}
+
+static const struct drm_display_mode starry_ili9882t_default_mode = {
+	.clock = 165280,
+	.hdisplay = 1200,
+	.hsync_start = 1200 + 72,
+	.hsync_end = 1200 + 72 + 30,
+	.htotal = 1200 + 72 + 30 + 72,
+	.vdisplay = 1920,
+	.vsync_start = 1920 + 68,
+	.vsync_end = 1920 + 68 + 2,
+	.vtotal = 1920 + 68 + 2 + 10,
+	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+};
+
+static const struct panel_desc starry_ili9882t_desc = {
+	.modes = &starry_ili9882t_default_mode,
+	.bpc = 8,
+	.size = {
+		.width_mm = 141,
+		.height_mm = 226,
+	},
+	.lanes = 4,
+	.format = MIPI_DSI_FMT_RGB888,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+		      MIPI_DSI_MODE_LPM,
+	.init_cmds = starry_ili9882t_init_cmd,
+};
+
+static int ili9882t_get_modes(struct drm_panel *panel,
+			      struct drm_connector *connector)
+{
+	struct ili9882t *ili = to_ili9882t(panel);
+	const struct drm_display_mode *m = ili->desc->modes;
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, m);
+	if (!mode) {
+		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
+			m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
+		return -ENOMEM;
+	}
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+
+	connector->display_info.width_mm = ili->desc->size.width_mm;
+	connector->display_info.height_mm = ili->desc->size.height_mm;
+	connector->display_info.bpc = ili->desc->bpc;
+
+	return 1;
+}
+
+static enum drm_panel_orientation ili9882t_get_orientation(struct drm_panel *panel)
+{
+	struct ili9882t *ili = to_ili9882t(panel);
+
+	return ili->orientation;
+}
+
+static const struct drm_panel_funcs ili9882t_funcs = {
+	.disable = ili9882t_disable,
+	.unprepare = ili9882t_unprepare,
+	.prepare = ili9882t_prepare,
+	.enable = ili9882t_enable,
+	.get_modes = ili9882t_get_modes,
+	.get_orientation = ili9882t_get_orientation,
+};
+
+static int ili9882t_add(struct ili9882t *ili)
+{
+	struct device *dev = &ili->dsi->dev;
+	int err;
+
+	ili->avdd = devm_regulator_get(dev, "avdd");
+	if (IS_ERR(ili->avdd))
+		return PTR_ERR(ili->avdd);
+
+	ili->avee = devm_regulator_get(dev, "avee");
+	if (IS_ERR(ili->avee))
+		return PTR_ERR(ili->avee);
+
+	ili->pp3300 = devm_regulator_get(dev, "pp3300");
+	if (IS_ERR(ili->pp3300))
+		return PTR_ERR(ili->pp3300);
+
+	ili->pp1800 = devm_regulator_get(dev, "pp1800");
+	if (IS_ERR(ili->pp1800))
+		return PTR_ERR(ili->pp1800);
+
+	ili->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(ili->enable_gpio)) {
+		dev_err(dev, "cannot get reset-gpios %ld\n",
+			PTR_ERR(ili->enable_gpio));
+		return PTR_ERR(ili->enable_gpio);
+	}
+
+	gpiod_set_value(ili->enable_gpio, 0);
+
+	drm_panel_init(&ili->base, dev, &ili9882t_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+	err = of_drm_get_panel_orientation(dev->of_node, &ili->orientation);
+	if (err < 0) {
+		dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
+		return err;
+	}
+
+	err = drm_panel_of_backlight(&ili->base);
+	if (err)
+		return err;
+
+	ili->base.funcs = &ili9882t_funcs;
+	ili->base.dev = &ili->dsi->dev;
+
+	drm_panel_add(&ili->base);
+
+	return 0;
+}
+
+static int ili9882t_probe(struct mipi_dsi_device *dsi)
+{
+	struct ili9882t *ili;
+	int ret;
+	const struct panel_desc *desc;
+
+	ili = devm_kzalloc(&dsi->dev, sizeof(*ili), GFP_KERNEL);
+	if (!ili)
+		return -ENOMEM;
+
+	desc = of_device_get_match_data(&dsi->dev);
+	dsi->lanes = desc->lanes;
+	dsi->format = desc->format;
+	dsi->mode_flags = desc->mode_flags;
+	ili->desc = desc;
+	ili->dsi = dsi;
+	ret = ili9882t_add(ili);
+	if (ret < 0)
+		return ret;
+
+	mipi_dsi_set_drvdata(dsi, ili);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret)
+		drm_panel_remove(&ili->base);
+
+	return ret;
+}
+
+static void ili9882t_remove(struct mipi_dsi_device *dsi)
+{
+	struct ili9882t *ili = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
+
+	if (ili->base.dev)
+		drm_panel_remove(&ili->base);
+}
+
+static const struct of_device_id ili9882t_of_match[] = {
+	{ .compatible = "starry,ili9882t",
+	  .data = &starry_ili9882t_desc
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ili9882t_of_match);
+
+static struct mipi_dsi_driver ili9882t_driver = {
+	.driver = {
+		.name = "panel-ili9882t",
+		.of_match_table = ili9882t_of_match,
+	},
+	.probe = ili9882t_probe,
+	.remove = ili9882t_remove,
+};
+module_mipi_dsi_driver(ili9882t_driver);
+
+MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
+MODULE_DESCRIPTION("Ilitek ILI9882T-based panels driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
index 8912757a6f..3e0a8e0d58 100644
--- a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
+++ b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
@@ -21,7 +21,6 @@ struct jdi_fhd_r63452 {
 	struct drm_panel panel;
 	struct mipi_dsi_device *dsi;
 	struct gpio_desc *reset_gpio;
-	bool prepared;
 };
 
 static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel)
@@ -157,9 +156,6 @@ static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	jdi_fhd_r63452_reset(ctx);
 
 	ret = jdi_fhd_r63452_on(ctx);
@@ -169,7 +165,6 @@ static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	ctx->prepared = true;
 	return 0;
 }
 
@@ -179,16 +174,12 @@ static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = jdi_fhd_r63452_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
 
 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 
-	ctx->prepared = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-jdi-lpm102a188a.c b/drivers/gpu/drm/panel/panel-jdi-lpm102a188a.c
new file mode 100644
index 0000000000..5b5082efb2
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-jdi-lpm102a188a.c
@@ -0,0 +1,551 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * Copyright (C) 2022 Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
+ *
+ * Adapted from the downstream Pixel C driver written by Sean Paul
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+
+#define MCS_CMD_ACS_PROT			0xB0
+#define MCS_CMD_ACS_PROT_OFF			(0 << 0)
+
+#define MCS_PWR_CTRL_FUNC			0xD0
+#define MCS_PWR_CTRL_PARAM1_DEFAULT		(2 << 0)
+#define MCS_PWR_CTRL_PARAM1_VGH_210_DIV		(1 << 4)
+#define MCS_PWR_CTRL_PARAM1_VGH_240_DIV		(2 << 4)
+#define MCS_PWR_CTRL_PARAM1_VGH_280_DIV		(3 << 4)
+#define MCS_PWR_CTRL_PARAM1_VGH_330_DIV		(4 << 4)
+#define MCS_PWR_CTRL_PARAM1_VGH_410_DIV		(5 << 4)
+#define MCS_PWR_CTRL_PARAM2_DEFAULT		(9 << 4)
+#define MCS_PWR_CTRL_PARAM2_VGL_210_DIV		(1 << 0)
+#define MCS_PWR_CTRL_PARAM2_VGL_240_DIV		(2 << 0)
+#define MCS_PWR_CTRL_PARAM2_VGL_280_DIV		(3 << 0)
+#define MCS_PWR_CTRL_PARAM2_VGL_330_DIV		(4 << 0)
+#define MCS_PWR_CTRL_PARAM2_VGL_410_DIV		(5 << 0)
+
+struct jdi_panel {
+	struct drm_panel base;
+	struct mipi_dsi_device *link1;
+	struct mipi_dsi_device *link2;
+
+	struct regulator *supply;
+	struct regulator *ddi_supply;
+	struct backlight_device *backlight;
+
+	struct gpio_desc *enable_gpio;
+	struct gpio_desc *reset_gpio;
+
+	const struct drm_display_mode *mode;
+};
+
+static inline struct jdi_panel *to_panel_jdi(struct drm_panel *panel)
+{
+	return container_of(panel, struct jdi_panel, base);
+}
+
+static void jdi_wait_frames(struct jdi_panel *jdi, unsigned int frames)
+{
+	unsigned int refresh = drm_mode_vrefresh(jdi->mode);
+
+	if (WARN_ON(frames > refresh))
+		return;
+
+	msleep(1000 / (refresh / frames));
+}
+
+static int jdi_panel_disable(struct drm_panel *panel)
+{
+	struct jdi_panel *jdi = to_panel_jdi(panel);
+
+	backlight_disable(jdi->backlight);
+
+	jdi_wait_frames(jdi, 2);
+
+	return 0;
+}
+
+static int jdi_panel_unprepare(struct drm_panel *panel)
+{
+	struct jdi_panel *jdi = to_panel_jdi(panel);
+	int ret;
+
+	ret = mipi_dsi_dcs_set_display_off(jdi->link1);
+	if (ret < 0)
+		dev_err(panel->dev, "failed to set display off: %d\n", ret);
+
+	ret = mipi_dsi_dcs_set_display_off(jdi->link2);
+	if (ret < 0)
+		dev_err(panel->dev, "failed to set display off: %d\n", ret);
+
+	/* Specified by JDI @ 50ms, subject to change */
+	msleep(50);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(jdi->link1);
+	if (ret < 0)
+		dev_err(panel->dev, "failed to enter sleep mode: %d\n", ret);
+	ret = mipi_dsi_dcs_enter_sleep_mode(jdi->link2);
+	if (ret < 0)
+		dev_err(panel->dev, "failed to enter sleep mode: %d\n", ret);
+
+	/* Specified by JDI @ 150ms, subject to change */
+	msleep(150);
+
+	gpiod_set_value(jdi->reset_gpio, 1);
+
+	/* T4 = 1ms */
+	usleep_range(1000, 3000);
+
+	gpiod_set_value(jdi->enable_gpio, 0);
+
+	/* T5 = 2ms */
+	usleep_range(2000, 4000);
+
+	regulator_disable(jdi->ddi_supply);
+
+	/* T6 = 2ms plus some time to discharge capacitors */
+	usleep_range(7000, 9000);
+
+	regulator_disable(jdi->supply);
+	/* Specified by JDI @ 20ms, subject to change */
+	msleep(20);
+
+	return ret;
+}
+
+static int jdi_setup_symmetrical_split(struct mipi_dsi_device *left,
+				       struct mipi_dsi_device *right,
+				       const struct drm_display_mode *mode)
+{
+	int err;
+
+	err = mipi_dsi_dcs_set_column_address(left, 0, mode->hdisplay / 2 - 1);
+	if (err < 0) {
+		dev_err(&left->dev, "failed to set column address: %d\n", err);
+		return err;
+	}
+
+	err = mipi_dsi_dcs_set_column_address(right, 0, mode->hdisplay / 2 - 1);
+	if (err < 0) {
+		dev_err(&right->dev, "failed to set column address: %d\n", err);
+		return err;
+	}
+
+	err = mipi_dsi_dcs_set_page_address(left, 0, mode->vdisplay - 1);
+	if (err < 0) {
+		dev_err(&left->dev, "failed to set page address: %d\n", err);
+		return err;
+	}
+
+	err = mipi_dsi_dcs_set_page_address(right, 0, mode->vdisplay - 1);
+	if (err < 0) {
+		dev_err(&right->dev, "failed to set page address: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+static int jdi_write_dcdc_registers(struct jdi_panel *jdi)
+{
+	/* Clear the manufacturer command access protection */
+	mipi_dsi_generic_write_seq(jdi->link1, MCS_CMD_ACS_PROT,
+				   MCS_CMD_ACS_PROT_OFF);
+	mipi_dsi_generic_write_seq(jdi->link2, MCS_CMD_ACS_PROT,
+				   MCS_CMD_ACS_PROT_OFF);
+	/*
+	 * Change the VGH/VGL divide rations to move the noise generated by the
+	 * TCONN. This should hopefully avoid interaction with the backlight
+	 * controller.
+	 */
+	mipi_dsi_generic_write_seq(jdi->link1, MCS_PWR_CTRL_FUNC,
+				   MCS_PWR_CTRL_PARAM1_VGH_330_DIV |
+				   MCS_PWR_CTRL_PARAM1_DEFAULT,
+				   MCS_PWR_CTRL_PARAM2_VGL_410_DIV |
+				   MCS_PWR_CTRL_PARAM2_DEFAULT);
+
+	mipi_dsi_generic_write_seq(jdi->link2, MCS_PWR_CTRL_FUNC,
+				   MCS_PWR_CTRL_PARAM1_VGH_330_DIV |
+				   MCS_PWR_CTRL_PARAM1_DEFAULT,
+				   MCS_PWR_CTRL_PARAM2_VGL_410_DIV |
+				   MCS_PWR_CTRL_PARAM2_DEFAULT);
+
+	return 0;
+}
+
+static int jdi_panel_prepare(struct drm_panel *panel)
+{
+	struct jdi_panel *jdi = to_panel_jdi(panel);
+	int err;
+
+	/* Disable backlight to avoid showing random pixels
+	 * with a conservative delay for it to take effect.
+	 */
+	backlight_disable(jdi->backlight);
+	jdi_wait_frames(jdi, 3);
+
+	jdi->link1->mode_flags |= MIPI_DSI_MODE_LPM;
+	jdi->link2->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	err = regulator_enable(jdi->supply);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to enable supply: %d\n", err);
+		return err;
+	}
+	/* T1 = 2ms */
+	usleep_range(2000, 4000);
+
+	err = regulator_enable(jdi->ddi_supply);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to enable ddi_supply: %d\n", err);
+		goto supply_off;
+	}
+	/* T2 = 1ms */
+	usleep_range(1000, 3000);
+
+	gpiod_set_value(jdi->enable_gpio, 1);
+	/* T3 = 10ms */
+	usleep_range(10000, 15000);
+
+	gpiod_set_value(jdi->reset_gpio, 0);
+	/* Specified by JDI @ 3ms, subject to change */
+	usleep_range(3000, 5000);
+
+	/*
+	 * TODO: The device supports both left-right and even-odd split
+	 * configurations, but this driver currently supports only the left-
+	 * right split. To support a different mode a mechanism needs to be
+	 * put in place to communicate the configuration back to the DSI host
+	 * controller.
+	 */
+	err = jdi_setup_symmetrical_split(jdi->link1, jdi->link2,
+					  jdi->mode);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set up symmetrical split: %d\n",
+			err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_set_tear_scanline(jdi->link1,
+					     jdi->mode->vdisplay - 16);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set tear scanline: %d\n", err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_set_tear_scanline(jdi->link2,
+					     jdi->mode->vdisplay - 16);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set tear scanline: %d\n", err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_set_tear_on(jdi->link1,
+				       MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set tear on: %d\n", err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_set_tear_on(jdi->link2,
+				       MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set tear on: %d\n", err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_set_pixel_format(jdi->link1, MIPI_DCS_PIXEL_FMT_24BIT);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set pixel format: %d\n", err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_set_pixel_format(jdi->link2, MIPI_DCS_PIXEL_FMT_24BIT);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set pixel format: %d\n", err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_exit_sleep_mode(jdi->link1);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_exit_sleep_mode(jdi->link2);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
+		goto poweroff;
+	}
+
+	err = jdi_write_dcdc_registers(jdi);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to write dcdc registers: %d\n", err);
+		goto poweroff;
+	}
+	/*
+	 * We need to wait 150ms between mipi_dsi_dcs_exit_sleep_mode() and
+	 * mipi_dsi_dcs_set_display_on().
+	 */
+	msleep(150);
+
+	err = mipi_dsi_dcs_set_display_on(jdi->link1);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set display on: %d\n", err);
+		goto poweroff;
+	}
+
+	err = mipi_dsi_dcs_set_display_on(jdi->link2);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to set display on: %d\n", err);
+		goto poweroff;
+	}
+
+	jdi->link1->mode_flags &= ~MIPI_DSI_MODE_LPM;
+	jdi->link2->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	return 0;
+
+poweroff:
+	regulator_disable(jdi->ddi_supply);
+
+	/* T6 = 2ms plus some time to discharge capacitors */
+	usleep_range(7000, 9000);
+supply_off:
+	regulator_disable(jdi->supply);
+	/* Specified by JDI @ 20ms, subject to change */
+	msleep(20);
+
+	return err;
+}
+
+static int jdi_panel_enable(struct drm_panel *panel)
+{
+	struct jdi_panel *jdi = to_panel_jdi(panel);
+
+	/*
+	 * Ensure we send image data before turning the backlight
+	 * on, to avoid the display showing random pixels.
+	 */
+	jdi_wait_frames(jdi, 3);
+
+	backlight_enable(jdi->backlight);
+
+	return 0;
+}
+
+static const struct drm_display_mode default_mode = {
+	.clock = (2560 + 80 + 80 + 80) * (1800 + 4 + 4 + 4) * 60 / 1000,
+	.hdisplay = 2560,
+	.hsync_start = 2560 + 80,
+	.hsync_end = 2560 + 80 + 80,
+	.htotal = 2560 + 80 + 80 + 80,
+	.vdisplay = 1800,
+	.vsync_start = 1800 + 4,
+	.vsync_end = 1800 + 4 + 4,
+	.vtotal = 1800 + 4 + 4 + 4,
+	.flags = 0,
+};
+
+static int jdi_panel_get_modes(struct drm_panel *panel,
+			       struct drm_connector *connector)
+{
+	struct drm_display_mode *mode;
+	struct jdi_panel *jdi = to_panel_jdi(panel);
+	struct device *dev = &jdi->link1->dev;
+
+	mode = drm_mode_duplicate(connector->dev, &default_mode);
+	if (!mode) {
+		dev_err(dev, "failed to add mode %ux%ux@%u\n",
+			default_mode.hdisplay, default_mode.vdisplay,
+			drm_mode_vrefresh(&default_mode));
+		return -ENOMEM;
+	}
+
+	drm_mode_set_name(mode);
+
+	drm_mode_probed_add(connector, mode);
+
+	connector->display_info.width_mm = 211;
+	connector->display_info.height_mm = 148;
+	connector->display_info.bpc = 8;
+
+	return 1;
+}
+
+static const struct drm_panel_funcs jdi_panel_funcs = {
+	.prepare = jdi_panel_prepare,
+	.enable = jdi_panel_enable,
+	.disable = jdi_panel_disable,
+	.unprepare = jdi_panel_unprepare,
+	.get_modes = jdi_panel_get_modes,
+};
+
+static const struct of_device_id jdi_of_match[] = {
+	{ .compatible = "jdi,lpm102a188a", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, jdi_of_match);
+
+static int jdi_panel_add(struct jdi_panel *jdi)
+{
+	struct device *dev = &jdi->link1->dev;
+
+	jdi->mode = &default_mode;
+
+	jdi->supply = devm_regulator_get(dev, "power");
+	if (IS_ERR(jdi->supply))
+		return dev_err_probe(dev, PTR_ERR(jdi->supply),
+				     "failed to get power regulator\n");
+
+	jdi->ddi_supply = devm_regulator_get(dev, "ddi");
+	if (IS_ERR(jdi->ddi_supply))
+		return dev_err_probe(dev, PTR_ERR(jdi->ddi_supply),
+				     "failed to get ddi regulator\n");
+
+	jdi->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(jdi->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(jdi->reset_gpio),
+				     "failed to get reset gpio\n");
+	/* T4 = 1ms */
+	usleep_range(1000, 3000);
+
+	jdi->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(jdi->enable_gpio))
+		return dev_err_probe(dev, PTR_ERR(jdi->enable_gpio),
+				     "failed to get enable gpio\n");
+	/* T5 = 2ms */
+	usleep_range(2000, 4000);
+
+	jdi->backlight = devm_of_find_backlight(dev);
+	if (IS_ERR(jdi->backlight))
+		return dev_err_probe(dev, PTR_ERR(jdi->backlight),
+				     "failed to create backlight\n");
+
+	drm_panel_init(&jdi->base, &jdi->link1->dev, &jdi_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	drm_panel_add(&jdi->base);
+
+	return 0;
+}
+
+static void jdi_panel_del(struct jdi_panel *jdi)
+{
+	if (jdi->base.dev)
+		drm_panel_remove(&jdi->base);
+
+	if (jdi->link2)
+		put_device(&jdi->link2->dev);
+}
+
+static int jdi_panel_dsi_probe(struct mipi_dsi_device *dsi)
+{
+	struct mipi_dsi_device *secondary = NULL;
+	struct jdi_panel *jdi;
+	struct device_node *np;
+	int err;
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = 0;
+
+	/* Find DSI-LINK1 */
+	np = of_parse_phandle(dsi->dev.of_node, "link2", 0);
+	if (np) {
+		secondary = of_find_mipi_dsi_device_by_node(np);
+		of_node_put(np);
+
+		if (!secondary)
+			return -EPROBE_DEFER;
+	}
+
+	/* register a panel for only the DSI-LINK1 interface */
+	if (secondary) {
+		jdi = devm_kzalloc(&dsi->dev, sizeof(*jdi), GFP_KERNEL);
+		if (!jdi) {
+			put_device(&secondary->dev);
+			return -ENOMEM;
+		}
+
+		mipi_dsi_set_drvdata(dsi, jdi);
+
+		jdi->link1 = dsi;
+		jdi->link2 = secondary;
+
+		err = jdi_panel_add(jdi);
+		if (err < 0) {
+			put_device(&secondary->dev);
+			return err;
+		}
+	}
+
+	err = mipi_dsi_attach(dsi);
+	if (err < 0) {
+		if (secondary)
+			jdi_panel_del(jdi);
+
+		return err;
+	}
+
+	return 0;
+}
+
+static void jdi_panel_dsi_remove(struct mipi_dsi_device *dsi)
+{
+	struct jdi_panel *jdi = mipi_dsi_get_drvdata(dsi);
+	int err;
+
+	/* only detach from host for the DSI-LINK2 interface */
+	if (!jdi)
+		mipi_dsi_detach(dsi);
+
+	err = jdi_panel_disable(&jdi->base);
+	if (err < 0)
+		dev_err(&dsi->dev, "failed to disable panel: %d\n", err);
+
+	err = mipi_dsi_detach(dsi);
+	if (err < 0)
+		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
+
+	jdi_panel_del(jdi);
+}
+
+static void jdi_panel_dsi_shutdown(struct mipi_dsi_device *dsi)
+{
+	struct jdi_panel *jdi = mipi_dsi_get_drvdata(dsi);
+
+	if (!jdi)
+		return;
+
+	jdi_panel_disable(&jdi->base);
+}
+
+static struct mipi_dsi_driver jdi_panel_dsi_driver = {
+	.driver = {
+		.name = "panel-jdi-lpm102a188a",
+		.of_match_table = jdi_of_match,
+	},
+	.probe = jdi_panel_dsi_probe,
+	.remove = jdi_panel_dsi_remove,
+	.shutdown = jdi_panel_dsi_shutdown,
+};
+module_mipi_dsi_driver(jdi_panel_dsi_driver);
+
+MODULE_AUTHOR("Sean Paul <seanpaul@chromium.org>");
+MODULE_AUTHOR("Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>");
+MODULE_DESCRIPTION("DRM Driver for JDI LPM102A188A DSI panel, command mode");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
index 213008499c..f9a69f3470 100644
--- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -5,10 +5,6 @@
  *
  * Copyright (C) 2016 Linaro Ltd
  * Author: Sumit Semwal <sumit.semwal@linaro.org>
- *
- * From internet archives, the panel for Nexus 7 2nd Gen, 2013 model is a
- * JDI model LT070ME05000, and its data sheet is at:
- * http://panelone.net/en/7-0-inch/JDI_LT070ME05000_7.0_inch-datasheet
  */
 
 #include <linux/backlight.h>
diff --git a/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c b/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
index d41482d3a3..30919c872a 100644
--- a/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
+++ b/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
@@ -24,6 +24,7 @@ struct ltk050h3146w_cmd {
 
 struct ltk050h3146w;
 struct ltk050h3146w_desc {
+	const unsigned long mode_flags;
 	const struct drm_display_mode *mode;
 	int (*init)(struct ltk050h3146w *ctx);
 };
@@ -243,6 +244,91 @@ struct ltk050h3146w *panel_to_ltk050h3146w(struct drm_panel *panel)
 	return container_of(panel, struct ltk050h3146w, panel);
 }
 
+static int ltk050h3148w_init_sequence(struct ltk050h3146w *ctx)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	int ret;
+
+	/*
+	 * Init sequence was supplied by the panel vendor without much
+	 * documentation.
+	 */
+	mipi_dsi_dcs_write_seq(dsi, 0xb9, 0xff, 0x83, 0x94);
+	mipi_dsi_dcs_write_seq(dsi, 0xb1, 0x50, 0x15, 0x75, 0x09, 0x32, 0x44,
+			       0x71, 0x31, 0x55, 0x2f);
+	mipi_dsi_dcs_write_seq(dsi, 0xba, 0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
+	mipi_dsi_dcs_write_seq(dsi, 0xd2, 0x88);
+	mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x00, 0x80, 0x64, 0x10, 0x07);
+	mipi_dsi_dcs_write_seq(dsi, 0xb4, 0x05, 0x70, 0x05, 0x70, 0x01, 0x70,
+			       0x01, 0x0c, 0x86, 0x75, 0x00, 0x3f, 0x01, 0x74,
+			       0x01, 0x74, 0x01, 0x74, 0x01, 0x0c, 0x86);
+	mipi_dsi_dcs_write_seq(dsi, 0xd3, 0x00, 0x00, 0x07, 0x07, 0x40, 0x1e,
+			       0x08, 0x00, 0x32, 0x10, 0x08, 0x00, 0x08, 0x54,
+			       0x15, 0x10, 0x05, 0x04, 0x02, 0x12, 0x10, 0x05,
+			       0x07, 0x33, 0x34, 0x0c, 0x0c, 0x37, 0x10, 0x07,
+			       0x17, 0x11, 0x40);
+	mipi_dsi_dcs_write_seq(dsi, 0xd5, 0x19, 0x19, 0x18, 0x18, 0x1b, 0x1b,
+			       0x1a, 0x1a, 0x04, 0x05, 0x06, 0x07, 0x00, 0x01,
+			       0x02, 0x03, 0x20, 0x21, 0x18, 0x18, 0x22, 0x23,
+			       0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+			       0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+			       0x18, 0x18, 0x18, 0x18, 0x18, 0x18);
+	mipi_dsi_dcs_write_seq(dsi, 0xd6, 0x18, 0x18, 0x19, 0x19, 0x1b, 0x1b,
+			       0x1a, 0x1a, 0x03, 0x02, 0x01, 0x00, 0x07, 0x06,
+			       0x05, 0x04, 0x23, 0x22, 0x18, 0x18, 0x21, 0x20,
+			       0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+			       0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+			       0x18, 0x18, 0x18, 0x18, 0x18, 0x18);
+	mipi_dsi_dcs_write_seq(dsi, 0xe0, 0x00, 0x03, 0x09, 0x11, 0x11, 0x14,
+			       0x18, 0x16, 0x2e, 0x3d, 0x4d, 0x4d, 0x58, 0x6c,
+			       0x72, 0x78, 0x88, 0x8b, 0x86, 0xa4, 0xb2, 0x58,
+			       0x55, 0x59, 0x5b, 0x5d, 0x60, 0x64, 0x7f, 0x00,
+			       0x03, 0x09, 0x0f, 0x11, 0x14, 0x18, 0x16, 0x2e,
+			       0x3d, 0x4d, 0x4d, 0x58, 0x6d, 0x73, 0x78, 0x88,
+			       0x8b, 0x87, 0xa5, 0xb2, 0x58, 0x55, 0x58, 0x5b,
+			       0x5d, 0x61, 0x65, 0x7f);
+	mipi_dsi_dcs_write_seq(dsi, 0xcc, 0x0b);
+	mipi_dsi_dcs_write_seq(dsi, 0xc0, 0x1f, 0x31);
+	mipi_dsi_dcs_write_seq(dsi, 0xb6, 0xc4, 0xc4);
+	mipi_dsi_dcs_write_seq(dsi, 0xbd, 0x01);
+	mipi_dsi_dcs_write_seq(dsi, 0xb1, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xbd, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xc6, 0xef);
+	mipi_dsi_dcs_write_seq(dsi, 0xd4, 0x02);
+	mipi_dsi_dcs_write_seq(dsi, 0x11);
+	mipi_dsi_dcs_write_seq(dsi, 0x29);
+
+	ret = mipi_dsi_dcs_set_tear_on(dsi, 1);
+	if (ret < 0) {
+		dev_err(ctx->dev, "failed to set tear on: %d\n", ret);
+		return ret;
+	}
+
+	msleep(60);
+
+	return 0;
+}
+
+static const struct drm_display_mode ltk050h3148w_mode = {
+	.hdisplay	= 720,
+	.hsync_start	= 720 + 12,
+	.hsync_end	= 720 + 12 + 6,
+	.htotal		= 720 + 12 + 6 + 24,
+	.vdisplay	= 1280,
+	.vsync_start	= 1280 + 9,
+	.vsync_end	= 1280 + 9 + 2,
+	.vtotal		= 1280 + 9 + 2 + 16,
+	.clock		= 59756,
+	.width_mm	= 62,
+	.height_mm	= 110,
+};
+
+static const struct ltk050h3146w_desc ltk050h3148w_data = {
+	.mode = &ltk050h3148w_mode,
+	.init = ltk050h3148w_init_sequence,
+	.mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_VIDEO_BURST,
+};
+
 static int ltk050h3146w_init_sequence(struct ltk050h3146w *ctx)
 {
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
@@ -330,6 +416,8 @@ static const struct drm_display_mode ltk050h3146w_mode = {
 static const struct ltk050h3146w_desc ltk050h3146w_data = {
 	.mode = &ltk050h3146w_mode,
 	.init = ltk050h3146w_init_sequence,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+		MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET,
 };
 
 static int ltk050h3146w_a2_select_page(struct ltk050h3146w *ctx, int page)
@@ -424,6 +512,8 @@ static const struct drm_display_mode ltk050h3146w_a2_mode = {
 static const struct ltk050h3146w_desc ltk050h3146w_a2_data = {
 	.mode = &ltk050h3146w_a2_mode,
 	.init = ltk050h3146w_a2_init_sequence,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+		MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET,
 };
 
 static int ltk050h3146w_unprepare(struct drm_panel *panel)
@@ -583,8 +673,7 @@ static int ltk050h3146w_probe(struct mipi_dsi_device *dsi)
 
 	dsi->lanes = 4;
 	dsi->format = MIPI_DSI_FMT_RGB888;
-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
-			  MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET;
+	dsi->mode_flags = ctx->panel_desc->mode_flags;
 
 	drm_panel_init(&ctx->panel, &dsi->dev, &ltk050h3146w_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
@@ -642,6 +731,10 @@ static const struct of_device_id ltk050h3146w_of_match[] = {
 		.compatible = "leadtek,ltk050h3146w-a2",
 		.data = &ltk050h3146w_a2_data,
 	},
+	{
+		.compatible = "leadtek,ltk050h3148w",
+		.data = &ltk050h3148w_data,
+	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, ltk050h3146w_of_match);
diff --git a/drivers/gpu/drm/panel/panel-newvision-nv3051d.c b/drivers/gpu/drm/panel/panel-newvision-nv3051d.c
index 227937afe2..c44c694566 100644
--- a/drivers/gpu/drm/panel/panel-newvision-nv3051d.c
+++ b/drivers/gpu/drm/panel/panel-newvision-nv3051d.c
@@ -390,6 +390,13 @@ static int panel_nv3051d_probe(struct mipi_dsi_device *dsi)
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
 			  MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET;
 
+	/*
+	 * The panel in the RG351V is identical to the 353P, except it
+	 * requires MIPI_DSI_CLOCK_NON_CONTINUOUS to operate correctly.
+	 */
+	if (of_device_is_compatible(dev->of_node, "anbernic,rg351v-panel"))
+		dsi->mode_flags |= MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
 	drm_panel_init(&ctx->panel, &dsi->dev, &panel_nv3051d_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
 
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt35950.c b/drivers/gpu/drm/panel/panel-novatek-nt35950.c
index 412ca84d05..648ce92014 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt35950.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt35950.c
@@ -59,7 +59,6 @@ struct nt35950 {
 
 	int cur_mode;
 	u8 last_page;
-	bool prepared;
 };
 
 struct nt35950_panel_mode {
@@ -431,9 +430,6 @@ static int nt35950_prepare(struct drm_panel *panel)
 	struct device *dev = &nt->dsi[0]->dev;
 	int ret;
 
-	if (nt->prepared)
-		return 0;
-
 	ret = regulator_enable(nt->vregs[0].consumer);
 	if (ret)
 		return ret;
@@ -460,7 +456,6 @@ static int nt35950_prepare(struct drm_panel *panel)
 		dev_err(dev, "Failed to initialize panel: %d\n", ret);
 		goto end;
 	}
-	nt->prepared = true;
 
 end:
 	if (ret < 0) {
@@ -477,9 +472,6 @@ static int nt35950_unprepare(struct drm_panel *panel)
 	struct device *dev = &nt->dsi[0]->dev;
 	int ret;
 
-	if (!nt->prepared)
-		return 0;
-
 	ret = nt35950_off(nt);
 	if (ret < 0)
 		dev_err(dev, "Failed to deinitialize panel: %d\n", ret);
@@ -487,7 +479,6 @@ static int nt35950_unprepare(struct drm_panel *panel)
 	gpiod_set_value_cansleep(nt->reset_gpio, 0);
 	regulator_bulk_disable(ARRAY_SIZE(nt->vregs), nt->vregs);
 
-	nt->prepared = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt36523.c b/drivers/gpu/drm/panel/panel-novatek-nt36523.c
index c4a804c5d6..a189ce2363 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt36523.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt36523.c
@@ -38,8 +38,6 @@ struct panel_info {
 	struct gpio_desc *reset_gpio;
 	struct backlight_device *backlight;
 	struct regulator *vddio;
-
-	bool prepared;
 };
 
 struct panel_desc {
@@ -1046,9 +1044,6 @@ static int nt36523_prepare(struct drm_panel *panel)
 	struct panel_info *pinfo = to_panel_info(panel);
 	int ret;
 
-	if (pinfo->prepared)
-		return 0;
-
 	ret = regulator_enable(pinfo->vddio);
 	if (ret) {
 		dev_err(panel->dev, "failed to enable vddio regulator: %d\n", ret);
@@ -1064,8 +1059,6 @@ static int nt36523_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	pinfo->prepared = true;
-
 	return 0;
 }
 
@@ -1095,14 +1088,9 @@ static int nt36523_unprepare(struct drm_panel *panel)
 {
 	struct panel_info *pinfo = to_panel_info(panel);
 
-	if (!pinfo->prepared)
-		return 0;
-
 	gpiod_set_value_cansleep(pinfo->reset_gpio, 1);
 	regulator_disable(pinfo->vddio);
 
-	pinfo->prepared = false;
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
index 898b892f11..93183f30d7 100644
--- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
+++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
@@ -70,7 +70,6 @@ struct otm8009a {
 	struct gpio_desc *reset_gpio;
 	struct regulator *supply;
 	bool prepared;
-	bool enabled;
 };
 
 static const struct drm_display_mode modes[] = {
@@ -267,9 +266,6 @@ static int otm8009a_disable(struct drm_panel *panel)
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 	int ret;
 
-	if (!ctx->enabled)
-		return 0; /* This is not an issue so we return 0 here */
-
 	backlight_disable(ctx->bl_dev);
 
 	ret = mipi_dsi_dcs_set_display_off(dsi);
@@ -282,8 +278,6 @@ static int otm8009a_disable(struct drm_panel *panel)
 
 	msleep(120);
 
-	ctx->enabled = false;
-
 	return 0;
 }
 
@@ -291,9 +285,6 @@ static int otm8009a_unprepare(struct drm_panel *panel)
 {
 	struct otm8009a *ctx = panel_to_otm8009a(panel);
 
-	if (!ctx->prepared)
-		return 0;
-
 	if (ctx->reset_gpio) {
 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 		msleep(20);
@@ -311,9 +302,6 @@ static int otm8009a_prepare(struct drm_panel *panel)
 	struct otm8009a *ctx = panel_to_otm8009a(panel);
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_enable(ctx->supply);
 	if (ret < 0) {
 		dev_err(panel->dev, "failed to enable supply: %d\n", ret);
@@ -341,13 +329,8 @@ static int otm8009a_enable(struct drm_panel *panel)
 {
 	struct otm8009a *ctx = panel_to_otm8009a(panel);
 
-	if (ctx->enabled)
-		return 0;
-
 	backlight_enable(ctx->bl_dev);
 
-	ctx->enabled = true;
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-raydium-rm68200.c b/drivers/gpu/drm/panel/panel-raydium-rm68200.c
index 5f9b340588..7b7fe987e2 100644
--- a/drivers/gpu/drm/panel/panel-raydium-rm68200.c
+++ b/drivers/gpu/drm/panel/panel-raydium-rm68200.c
@@ -77,8 +77,6 @@ struct rm68200 {
 	struct drm_panel panel;
 	struct gpio_desc *reset_gpio;
 	struct regulator *supply;
-	bool prepared;
-	bool enabled;
 };
 
 static const struct drm_display_mode default_mode = {
@@ -231,27 +229,12 @@ static void rm68200_init_sequence(struct rm68200 *ctx)
 	dcs_write_seq(ctx, MCS_CMD_MODE_SW, MCS_CMD1_UCS);
 }
 
-static int rm68200_disable(struct drm_panel *panel)
-{
-	struct rm68200 *ctx = panel_to_rm68200(panel);
-
-	if (!ctx->enabled)
-		return 0;
-
-	ctx->enabled = false;
-
-	return 0;
-}
-
 static int rm68200_unprepare(struct drm_panel *panel)
 {
 	struct rm68200 *ctx = panel_to_rm68200(panel);
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = mipi_dsi_dcs_set_display_off(dsi);
 	if (ret)
 		dev_warn(panel->dev, "failed to set display off: %d\n", ret);
@@ -269,8 +252,6 @@ static int rm68200_unprepare(struct drm_panel *panel)
 
 	regulator_disable(ctx->supply);
 
-	ctx->prepared = false;
-
 	return 0;
 }
 
@@ -280,9 +261,6 @@ static int rm68200_prepare(struct drm_panel *panel)
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_enable(ctx->supply);
 	if (ret < 0) {
 		dev_err(ctx->dev, "failed to enable supply: %d\n", ret);
@@ -310,20 +288,6 @@ static int rm68200_prepare(struct drm_panel *panel)
 
 	msleep(20);
 
-	ctx->prepared = true;
-
-	return 0;
-}
-
-static int rm68200_enable(struct drm_panel *panel)
-{
-	struct rm68200 *ctx = panel_to_rm68200(panel);
-
-	if (ctx->enabled)
-		return 0;
-
-	ctx->enabled = true;
-
 	return 0;
 }
 
@@ -352,10 +316,8 @@ static int rm68200_get_modes(struct drm_panel *panel,
 }
 
 static const struct drm_panel_funcs rm68200_drm_funcs = {
-	.disable = rm68200_disable,
 	.unprepare = rm68200_unprepare,
 	.prepare = rm68200_prepare,
-	.enable = rm68200_enable,
 	.get_modes = rm68200_get_modes,
 };
 
diff --git a/drivers/gpu/drm/panel/panel-raydium-rm692e5.c b/drivers/gpu/drm/panel/panel-raydium-rm692e5.c
new file mode 100644
index 0000000000..a613ba5b81
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-raydium-rm692e5.c
@@ -0,0 +1,423 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.
+ * Copyright (c) 2023 Linaro Limited
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/display/drm_dsc.h>
+#include <drm/display/drm_dsc_helper.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct rm692e5_panel {
+	struct drm_panel panel;
+	struct mipi_dsi_device *dsi;
+	struct drm_dsc_config dsc;
+	struct regulator_bulk_data supplies[3];
+	struct gpio_desc *reset_gpio;
+	bool prepared;
+};
+
+static inline struct rm692e5_panel *to_rm692e5_panel(struct drm_panel *panel)
+{
+	return container_of(panel, struct rm692e5_panel, panel);
+}
+
+static void rm692e5_reset(struct rm692e5_panel *ctx)
+{
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(10000, 11000);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	usleep_range(5000, 6000);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(10000, 11000);
+}
+
+static int rm692e5_on(struct rm692e5_panel *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0x41);
+	mipi_dsi_generic_write_seq(dsi, 0xd6, 0x00);
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0x16);
+	mipi_dsi_generic_write_seq(dsi, 0x8a, 0x87);
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0x71);
+	mipi_dsi_generic_write_seq(dsi, 0x82, 0x01);
+	mipi_dsi_generic_write_seq(dsi, 0xc6, 0x00);
+	mipi_dsi_generic_write_seq(dsi, 0xc7, 0x2c);
+	mipi_dsi_generic_write_seq(dsi, 0xc8, 0x64);
+	mipi_dsi_generic_write_seq(dsi, 0xc9, 0x3c);
+	mipi_dsi_generic_write_seq(dsi, 0xca, 0x80);
+	mipi_dsi_generic_write_seq(dsi, 0xcb, 0x02);
+	mipi_dsi_generic_write_seq(dsi, 0xcc, 0x02);
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38);
+	mipi_dsi_generic_write_seq(dsi, 0x18, 0x13);
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4);
+	mipi_dsi_generic_write_seq(dsi, 0x00, 0xff);
+	mipi_dsi_generic_write_seq(dsi, 0x01, 0xff);
+	mipi_dsi_generic_write_seq(dsi, 0x02, 0xcf);
+	mipi_dsi_generic_write_seq(dsi, 0x03, 0xbc);
+	mipi_dsi_generic_write_seq(dsi, 0x04, 0xb9);
+	mipi_dsi_generic_write_seq(dsi, 0x05, 0x99);
+	mipi_dsi_generic_write_seq(dsi, 0x06, 0x02);
+	mipi_dsi_generic_write_seq(dsi, 0x07, 0x0a);
+	mipi_dsi_generic_write_seq(dsi, 0x08, 0xe0);
+	mipi_dsi_generic_write_seq(dsi, 0x09, 0x4c);
+	mipi_dsi_generic_write_seq(dsi, 0x0a, 0xeb);
+	mipi_dsi_generic_write_seq(dsi, 0x0b, 0xe8);
+	mipi_dsi_generic_write_seq(dsi, 0x0c, 0x32);
+	mipi_dsi_generic_write_seq(dsi, 0x0d, 0x07);
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4);
+	mipi_dsi_generic_write_seq(dsi, 0x0d, 0xc0);
+	mipi_dsi_generic_write_seq(dsi, 0x0e, 0xff);
+	mipi_dsi_generic_write_seq(dsi, 0x0f, 0xff);
+	mipi_dsi_generic_write_seq(dsi, 0x10, 0x33);
+	mipi_dsi_generic_write_seq(dsi, 0x11, 0x6f);
+	mipi_dsi_generic_write_seq(dsi, 0x12, 0x6e);
+	mipi_dsi_generic_write_seq(dsi, 0x13, 0xa6);
+	mipi_dsi_generic_write_seq(dsi, 0x14, 0x80);
+	mipi_dsi_generic_write_seq(dsi, 0x15, 0x02);
+	mipi_dsi_generic_write_seq(dsi, 0x16, 0x38);
+	mipi_dsi_generic_write_seq(dsi, 0x17, 0xd3);
+	mipi_dsi_generic_write_seq(dsi, 0x18, 0x3a);
+	mipi_dsi_generic_write_seq(dsi, 0x19, 0xba);
+	mipi_dsi_generic_write_seq(dsi, 0x1a, 0xcc);
+	mipi_dsi_generic_write_seq(dsi, 0x1b, 0x01);
+
+	ret = mipi_dsi_dcs_nop(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to nop: %d\n", ret);
+		return ret;
+	}
+	msleep(32);
+
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38);
+	mipi_dsi_generic_write_seq(dsi, 0x18, 0x13);
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0xd1);
+	mipi_dsi_generic_write_seq(dsi, 0xd3, 0x00);
+	mipi_dsi_generic_write_seq(dsi, 0xd0, 0x00);
+	mipi_dsi_generic_write_seq(dsi, 0xd2, 0x00);
+	mipi_dsi_generic_write_seq(dsi, 0xd4, 0x00);
+	mipi_dsi_generic_write_seq(dsi, 0xb4, 0x01);
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf9);
+	mipi_dsi_generic_write_seq(dsi, 0x00, 0xaf);
+	mipi_dsi_generic_write_seq(dsi, 0x1d, 0x37);
+	mipi_dsi_generic_write_seq(dsi, 0x44, 0x0a, 0x7b);
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00);
+	mipi_dsi_generic_write_seq(dsi, 0xfa, 0x01);
+	mipi_dsi_generic_write_seq(dsi, 0xc2, 0x08);
+	mipi_dsi_generic_write_seq(dsi, 0x35, 0x00);
+	mipi_dsi_generic_write_seq(dsi, 0x51, 0x05, 0x42);
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(100);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display on: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int rm692e5_disable(struct drm_panel *panel)
+{
+	struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00);
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display off: %d\n", ret);
+		return ret;
+	}
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(100);
+
+	return 0;
+}
+
+static int rm692e5_prepare(struct drm_panel *panel)
+{
+	struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
+	struct drm_dsc_picture_parameter_set pps;
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	if (ctx->prepared)
+		return 0;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enable regulators: %d\n", ret);
+		return ret;
+	}
+
+	rm692e5_reset(ctx);
+
+	ret = rm692e5_on(ctx);
+	if (ret < 0) {
+		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+		return ret;
+	}
+
+	drm_dsc_pps_payload_pack(&pps, &ctx->dsc);
+
+	ret = mipi_dsi_picture_parameter_set(ctx->dsi, &pps);
+	if (ret < 0) {
+		dev_err(panel->dev, "failed to transmit PPS: %d\n", ret);
+		return ret;
+	}
+
+	ret = mipi_dsi_compression_mode(ctx->dsi, true);
+	if (ret < 0) {
+		dev_err(dev, "failed to enable compression mode: %d\n", ret);
+		return ret;
+	}
+
+	msleep(28);
+
+	mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x40);
+
+	/* 0x05 -> 90Hz, 0x00 -> 60Hz */
+	mipi_dsi_generic_write_seq(ctx->dsi, 0xbd, 0x05);
+
+	mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x00);
+
+	ctx->prepared = true;
+
+	return 0;
+}
+
+static int rm692e5_unprepare(struct drm_panel *panel)
+{
+	struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
+
+	if (!ctx->prepared)
+		return 0;
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+
+	ctx->prepared = false;
+	return 0;
+}
+
+static const struct drm_display_mode rm692e5_mode = {
+	.clock = (1224 + 32 + 8 + 8) * (2700 + 8 + 2 + 8) * 90 / 1000,
+	.hdisplay = 1224,
+	.hsync_start = 1224 + 32,
+	.hsync_end = 1224 + 32 + 8,
+	.htotal = 1224 + 32 + 8 + 8,
+	.vdisplay = 2700,
+	.vsync_start = 2700 + 8,
+	.vsync_end = 2700 + 8 + 2,
+	.vtotal = 2700 + 8 + 2 + 8,
+	.width_mm = 68,
+	.height_mm = 150,
+};
+
+static int rm692e5_get_modes(struct drm_panel *panel,
+					struct drm_connector *connector)
+{
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, &rm692e5_mode);
+	if (!mode)
+		return -ENOMEM;
+
+	drm_mode_set_name(mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs rm692e5_panel_funcs = {
+	.prepare = rm692e5_prepare,
+	.unprepare = rm692e5_unprepare,
+	.disable = rm692e5_disable,
+	.get_modes = rm692e5_get_modes,
+};
+
+static int rm692e5_bl_update_status(struct backlight_device *bl)
+{
+	struct mipi_dsi_device *dsi = bl_get_data(bl);
+	u16 brightness = backlight_get_brightness(bl);
+	int ret;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
+	if (ret < 0)
+		return ret;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	return 0;
+}
+
+static int rm692e5_bl_get_brightness(struct backlight_device *bl)
+{
+	struct mipi_dsi_device *dsi = bl_get_data(bl);
+	u16 brightness;
+	int ret;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness);
+	if (ret < 0)
+		return ret;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	return brightness;
+}
+
+static const struct backlight_ops rm692e5_bl_ops = {
+	.update_status = rm692e5_bl_update_status,
+	.get_brightness = rm692e5_bl_get_brightness,
+};
+
+static struct backlight_device *
+rm692e5_create_backlight(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	const struct backlight_properties props = {
+		.type = BACKLIGHT_RAW,
+		.brightness = 4095,
+		.max_brightness = 4095,
+	};
+
+	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+					      &rm692e5_bl_ops, &props);
+}
+
+static int rm692e5_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct rm692e5_panel *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->supplies[0].supply = "vddio";
+	ctx->supplies[1].supply = "dvdd";
+	ctx->supplies[2].supply = "vci";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+				      ctx->supplies);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(ctx->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+				     "Failed to get reset-gpios\n");
+
+	ctx->dsi = dsi;
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET |
+			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	drm_panel_init(&ctx->panel, dev, &rm692e5_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+	ctx->panel.prepare_prev_first = true;
+
+	ctx->panel.backlight = rm692e5_create_backlight(dsi);
+	if (IS_ERR(ctx->panel.backlight))
+		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+				     "Failed to create backlight\n");
+
+	drm_panel_add(&ctx->panel);
+
+	/* This panel only supports DSC; unconditionally enable it */
+	dsi->dsc = &ctx->dsc;
+
+	/* TODO: Pass slice_per_pkt = 2 */
+	ctx->dsc.dsc_version_major = 1;
+	ctx->dsc.dsc_version_minor = 1;
+	ctx->dsc.slice_height = 60;
+	ctx->dsc.slice_width = 1224;
+
+	ctx->dsc.slice_count = 1224 / ctx->dsc.slice_width;
+	ctx->dsc.bits_per_component = 8;
+	ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */
+	ctx->dsc.block_pred_enable = true;
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+		drm_panel_remove(&ctx->panel);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void rm692e5_remove(struct mipi_dsi_device *dsi)
+{
+	struct rm692e5_panel *ctx = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+	drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id rm692e5_of_match[] = {
+	{ .compatible = "fairphone,fp5-rm692e5-boe" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, rm692e5_of_match);
+
+static struct mipi_dsi_driver rm692e5_driver = {
+	.probe = rm692e5_probe,
+	.remove = rm692e5_remove,
+	.driver = {
+		.name = "panel-rm692e5-boe-amoled",
+		.of_match_table = rm692e5_of_match,
+	},
+};
+module_mipi_dsi_driver(rm692e5_driver);
+
+MODULE_DESCRIPTION("DRM driver for rm692e5-equipped DSI panels");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c b/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
index b34fa4d5de..a0e5698275 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
@@ -270,9 +270,6 @@ struct s6e63m0 {
 	struct regulator_bulk_data supplies[2];
 	struct gpio_desc *reset_gpio;
 
-	bool prepared;
-	bool enabled;
-
 	/*
 	 * This field is tested by functions directly accessing bus before
 	 * transfer, transfer is skipped if it is set. In case of transfer
@@ -502,9 +499,6 @@ static int s6e63m0_disable(struct drm_panel *panel)
 {
 	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
 
-	if (!ctx->enabled)
-		return 0;
-
 	backlight_disable(ctx->bl_dev);
 
 	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
@@ -512,8 +506,6 @@ static int s6e63m0_disable(struct drm_panel *panel)
 	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
 	msleep(120);
 
-	ctx->enabled = false;
-
 	return 0;
 }
 
@@ -522,17 +514,12 @@ static int s6e63m0_unprepare(struct drm_panel *panel)
 	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	s6e63m0_clear_error(ctx);
 
 	ret = s6e63m0_power_off(ctx);
 	if (ret < 0)
 		return ret;
 
-	ctx->prepared = false;
-
 	return 0;
 }
 
@@ -541,9 +528,6 @@ static int s6e63m0_prepare(struct drm_panel *panel)
 	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = s6e63m0_power_on(ctx);
 	if (ret < 0)
 		return ret;
@@ -564,8 +548,6 @@ static int s6e63m0_prepare(struct drm_panel *panel)
 	if (ret < 0)
 		s6e63m0_unprepare(panel);
 
-	ctx->prepared = true;
-
 	return ret;
 }
 
@@ -573,9 +555,6 @@ static int s6e63m0_enable(struct drm_panel *panel)
 {
 	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
 
-	if (ctx->enabled)
-		return 0;
-
 	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
 	msleep(120);
 	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
@@ -588,8 +567,6 @@ static int s6e63m0_enable(struct drm_panel *panel)
 
 	backlight_enable(ctx->bl_dev);
 
-	ctx->enabled = true;
-
 	return 0;
 }
 
@@ -709,8 +686,6 @@ int s6e63m0_probe(struct device *dev, void *trsp,
 	dev_set_drvdata(dev, ctx);
 
 	ctx->dev = dev;
-	ctx->enabled = false;
-	ctx->prepared = false;
 
 	ret = device_property_read_u32(dev, "max-brightness", &max_brightness);
 	if (ret)
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c b/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c
index 7431cae742..d2df227abb 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c
@@ -18,8 +18,6 @@ struct s6e88a0_ams452ef01 {
 	struct mipi_dsi_device *dsi;
 	struct regulator_bulk_data supplies[2];
 	struct gpio_desc *reset_gpio;
-
-	bool prepared;
 };
 
 static inline struct
@@ -115,9 +113,6 @@ static int s6e88a0_ams452ef01_prepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 	if (ret < 0) {
 		dev_err(dev, "Failed to enable regulators: %d\n", ret);
@@ -135,7 +130,6 @@ static int s6e88a0_ams452ef01_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	ctx->prepared = true;
 	return 0;
 }
 
@@ -145,9 +139,6 @@ static int s6e88a0_ams452ef01_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = s6e88a0_ams452ef01_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
@@ -155,7 +146,6 @@ static int s6e88a0_ams452ef01_unprepare(struct drm_panel *panel)
 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 
-	ctx->prepared = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-samsung-sofef00.c b/drivers/gpu/drm/panel/panel-samsung-sofef00.c
index cbf9607dd5..04ce925b3d 100644
--- a/drivers/gpu/drm/panel/panel-samsung-sofef00.c
+++ b/drivers/gpu/drm/panel/panel-samsung-sofef00.c
@@ -23,7 +23,6 @@ struct sofef00_panel {
 	struct regulator *supply;
 	struct gpio_desc *reset_gpio;
 	const struct drm_display_mode *mode;
-	bool prepared;
 };
 
 static inline
@@ -113,9 +112,6 @@ static int sofef00_panel_prepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_enable(ctx->supply);
 	if (ret < 0) {
 		dev_err(dev, "Failed to enable regulator: %d\n", ret);
@@ -131,7 +127,6 @@ static int sofef00_panel_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	ctx->prepared = true;
 	return 0;
 }
 
@@ -141,16 +136,12 @@ static int sofef00_panel_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = sofef00_panel_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
 
 	regulator_disable(ctx->supply);
 
-	ctx->prepared = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c b/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c
index 68f52eaaf4..74c760ee0c 100644
--- a/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c
@@ -24,7 +24,6 @@ struct sharp_ls060 {
 	struct regulator *avdd_supply;
 	struct regulator *avee_supply;
 	struct gpio_desc *reset_gpio;
-	bool prepared;
 };
 
 static inline struct sharp_ls060 *to_sharp_ls060(struct drm_panel *panel)
@@ -101,9 +100,6 @@ static int sharp_ls060_prepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_enable(ctx->vddi_supply);
 	if (ret < 0)
 		return ret;
@@ -134,8 +130,6 @@ static int sharp_ls060_prepare(struct drm_panel *panel)
 		goto err_on;
 	}
 
-	ctx->prepared = true;
-
 	return 0;
 
 err_on:
@@ -163,9 +157,6 @@ static int sharp_ls060_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = sharp_ls060_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
@@ -181,7 +172,6 @@ static int sharp_ls060_unprepare(struct drm_panel *panel)
 
 	regulator_disable(ctx->vddi_supply);
 
-	ctx->prepared = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 51f838befb..1ba633fd56 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -40,6 +40,7 @@
 #include <drm/drm_edid.h>
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_panel.h>
+#include <drm/drm_of.h>
 
 /**
  * struct panel_desc - Describes a simple panel.
@@ -549,6 +550,51 @@ static void panel_simple_parse_panel_timing_node(struct device *dev,
 		dev_err(dev, "Reject override mode: No display_timing found\n");
 }
 
+static int panel_simple_override_nondefault_lvds_datamapping(struct device *dev,
+							     struct panel_simple *panel)
+{
+	int ret, bpc;
+
+	ret = drm_of_lvds_get_data_mapping(dev->of_node);
+	if (ret < 0) {
+		if (ret == -EINVAL)
+			dev_warn(dev, "Ignore invalid data-mapping property\n");
+
+		/*
+		 * Ignore non-existing or malformatted property, fallback to
+		 * default data-mapping, and return 0.
+		 */
+		return 0;
+	}
+
+	switch (ret) {
+	default:
+		WARN_ON(1);
+		fallthrough;
+	case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
+		fallthrough;
+	case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
+		bpc = 8;
+		break;
+	case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
+		bpc = 6;
+	}
+
+	if (panel->desc->bpc != bpc || panel->desc->bus_format != ret) {
+		struct panel_desc *override_desc;
+
+		override_desc = devm_kmemdup(dev, panel->desc, sizeof(*panel->desc), GFP_KERNEL);
+		if (!override_desc)
+			return -ENOMEM;
+
+		override_desc->bus_format = ret;
+		override_desc->bpc = bpc;
+		panel->desc = override_desc;
+	}
+
+	return 0;
+}
+
 static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
 {
 	struct panel_simple *panel;
@@ -601,6 +647,13 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
 			panel_simple_parse_panel_timing_node(dev, panel, &dt);
 	}
 
+	if (desc->connector_type == DRM_MODE_CONNECTOR_LVDS) {
+		/* Optional data-mapping property for overriding bus format */
+		err = panel_simple_override_nondefault_lvds_datamapping(dev, panel);
+		if (err)
+			goto free_ddc;
+	}
+
 	connector_type = desc->connector_type;
 	/* Catch common mistakes for panels. */
 	switch (connector_type) {
@@ -2826,6 +2879,32 @@ static const struct panel_desc mitsubishi_aa070mc01 = {
 	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
 };
 
+static const struct drm_display_mode mitsubishi_aa084xe01_mode = {
+	.clock = 56234,
+	.hdisplay = 1024,
+	.hsync_start = 1024 + 24,
+	.hsync_end = 1024 + 24 + 63,
+	.htotal = 1024 + 24 + 63 + 1,
+	.vdisplay = 768,
+	.vsync_start = 768 + 3,
+	.vsync_end = 768 + 3 + 6,
+	.vtotal = 768 + 3 + 6 + 1,
+	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
+};
+
+static const struct panel_desc mitsubishi_aa084xe01 = {
+	.modes = &mitsubishi_aa084xe01_mode,
+	.num_modes = 1,
+	.bpc = 8,
+	.size = {
+		.width = 1024,
+		.height = 768,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB565_1X16,
+	.connector_type = DRM_MODE_CONNECTOR_DPI,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
+};
+
 static const struct display_timing multi_inno_mi0700s4t_6_timing = {
 	.pixelclock = { 29000000, 33000000, 38000000 },
 	.hactive = { 800, 800, 800 },
@@ -4360,6 +4439,9 @@ static const struct of_device_id platform_of_match[] = {
 		.compatible = "mitsubishi,aa070mc01-ca1",
 		.data = &mitsubishi_aa070mc01,
 	}, {
+		.compatible = "mitsubishi,aa084xe01",
+		.data = &mitsubishi_aa084xe01,
+	}, {
 		.compatible = "multi-inno,mi0700s4t-6",
 		.data = &multi_inno_mi0700s4t_6,
 	}, {
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 7bb723d445..b55bafd1a8 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -130,6 +130,7 @@ static int jh057n_init_sequence(struct st7703 *ctx)
 				   0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41,
 				   0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10,
 				   0x11, 0x18);
+	msleep(20);
 
 	return 0;
 }
@@ -276,7 +277,6 @@ static int xbd599_init_sequence(struct st7703 *ctx)
 	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP,
 			       0x07, /* VREF_SEL = 4.2V */
 			       0x07  /* NVREF_SEL = 4.2V */);
-	msleep(20);
 
 	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM,
 			       0x2C, /* VCOMDC_F = -0.67V */
@@ -433,6 +433,94 @@ static const struct st7703_panel_desc rg353v2_desc = {
 	.init_sequence = rg353v2_init_sequence,
 };
 
+static int rgb30panel_init_sequence(struct st7703 *ctx)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+
+	/* Init sequence extracted from Powkiddy RGB30 BSP kernel. */
+
+	/*
+	 * For some reason this specific panel must be taken out of sleep
+	 * before the full init sequence, or else it will not display.
+	 */
+	mipi_dsi_dcs_exit_sleep_mode(dsi);
+	msleep(250);
+
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI, 0x33, 0x81, 0x05, 0xf9,
+			       0x0e, 0x0e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x00, 0x44, 0x25, 0x00, 0x90, 0x0a, 0x00,
+			       0x00, 0x01, 0x4f, 0x01, 0x00, 0x00, 0x37);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT, 0x25, 0x22, 0xf0,
+			       0x63);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, 0x10, 0x10, 0x28,
+			       0x28, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50,
+			       0x00, 0x00, 0x12, 0x70, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x46);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0b);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0x3c, 0x12, 0x30);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ, 0x07, 0x07, 0x0b, 0x0b,
+			       0x03, 0x0b, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00,
+			       0xc0, 0x10);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, 0x36, 0x00, 0x32,
+			       0x32, 0x77, 0xf1, 0xcc, 0xcc, 0x77, 0x77, 0x33,
+			       0x33);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x0a, 0x0a);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x88, 0x88);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1, 0xc8, 0x10, 0x0a, 0x10,
+			       0x0f, 0xa1, 0x80, 0x12, 0x31, 0x23, 0x47, 0x86,
+			       0xa1, 0x80, 0x47, 0x08, 0x00, 0x00, 0x0d, 0x00,
+			       0x00, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x00,
+			       0x48, 0x02, 0x8b, 0xaf, 0x46, 0x02, 0x88, 0x88,
+			       0x88, 0x88, 0x88, 0x48, 0x13, 0x8b, 0xaf, 0x57,
+			       0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x00, 0x00,
+			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2, 0x96, 0x12, 0x01, 0x01,
+			       0x01, 0x78, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x4f, 0x31, 0x8b, 0xa8, 0x31, 0x75, 0x88, 0x88,
+			       0x88, 0x88, 0x88, 0x4f, 0x20, 0x8b, 0xa8, 0x20,
+			       0x64, 0x88, 0x88, 0x88, 0x88, 0x88, 0x23, 0x00,
+			       0x00, 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x00, 0x40, 0xa1, 0x80, 0x00, 0x00, 0x00,
+			       0x00);
+	mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA, 0x00, 0x0a, 0x0f,
+			       0x29, 0x3b, 0x3f, 0x42, 0x39, 0x06, 0x0d, 0x10,
+			       0x13, 0x15, 0x14, 0x15, 0x10, 0x17, 0x00, 0x0a,
+			       0x0f, 0x29, 0x3b, 0x3f, 0x42, 0x39, 0x06, 0x0d,
+			       0x10, 0x13, 0x15, 0x14, 0x15, 0x10, 0x17);
+
+	return 0;
+}
+
+static const struct drm_display_mode rgb30panel_mode = {
+	.hdisplay	= 720,
+	.hsync_start	= 720 + 45,
+	.hsync_end	= 720 + 45 + 4,
+	.htotal		= 720 + 45 + 4 + 45,
+	.vdisplay	= 720,
+	.vsync_start	= 720 + 15,
+	.vsync_end	= 720 + 15 + 3,
+	.vtotal		= 720 + 15 + 3 + 11,
+	.clock		= 36570,
+	.flags		= DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+	.width_mm	= 76,
+	.height_mm	= 76,
+};
+
+static const struct st7703_panel_desc rgb30panel_desc = {
+	.mode = &rgb30panel_mode,
+	.lanes = 4,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+		      MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_LPM,
+	.format = MIPI_DSI_FMT_RGB888,
+	.init_sequence = rgb30panel_init_sequence,
+};
+
 static int st7703_enable(struct drm_panel *panel)
 {
 	struct st7703 *ctx = panel_to_st7703(panel);
@@ -445,16 +533,14 @@ static int st7703_enable(struct drm_panel *panel)
 		return ret;
 	}
 
-	msleep(20);
-
 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
 	if (ret < 0) {
 		dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
 		return ret;
 	}
 
-	/* Panel is operational 120 msec after reset */
-	msleep(60);
+	/* It takes the controller 120 msec to wake up after sleep. */
+	msleep(120);
 
 	ret = mipi_dsi_dcs_set_display_on(dsi);
 	if (ret)
@@ -479,6 +565,9 @@ static int st7703_disable(struct drm_panel *panel)
 	if (ret < 0)
 		dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
 
+	/* It takes the controller 120 msec to enter sleep mode. */
+	msleep(120);
+
 	return 0;
 }
 
@@ -695,6 +784,7 @@ static void st7703_remove(struct mipi_dsi_device *dsi)
 
 static const struct of_device_id st7703_of_match[] = {
 	{ .compatible = "anbernic,rg353v-panel-v2", .data = &rg353v2_desc },
+	{ .compatible = "powkiddy,rgb30-panel", .data = &rgb30panel_desc },
 	{ .compatible = "rocktech,jh057n00900", .data = &jh057n00900_panel_desc },
 	{ .compatible = "xingbangda,xbd599", .data = &xbd599_desc },
 	{ /* sentinel */ }
diff --git a/drivers/gpu/drm/panel/panel-sony-td4353-jdi.c b/drivers/gpu/drm/panel/panel-sony-td4353-jdi.c
index 1bde2f0178..472195d4bb 100644
--- a/drivers/gpu/drm/panel/panel-sony-td4353-jdi.c
+++ b/drivers/gpu/drm/panel/panel-sony-td4353-jdi.c
@@ -36,7 +36,6 @@ struct sony_td4353_jdi {
 	struct regulator_bulk_data supplies[3];
 	struct gpio_desc *panel_reset_gpio;
 	struct gpio_desc *touch_reset_gpio;
-	bool prepared;
 	int type;
 };
 
@@ -150,9 +149,6 @@ static int sony_td4353_jdi_prepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 	if (ret < 0) {
 		dev_err(dev, "Failed to enable regulators: %d\n", ret);
@@ -171,7 +167,6 @@ static int sony_td4353_jdi_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	ctx->prepared = true;
 	return 0;
 }
 
@@ -181,9 +176,6 @@ static int sony_td4353_jdi_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = sony_td4353_jdi_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to power off panel: %d\n", ret);
@@ -191,7 +183,6 @@ static int sony_td4353_jdi_unprepare(struct drm_panel *panel)
 	sony_td4353_assert_reset_gpios(ctx, 0);
 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 
-	ctx->prepared = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-sony-tulip-truly-nt35521.c b/drivers/gpu/drm/panel/panel-sony-tulip-truly-nt35521.c
index ee5d20ecc5..6d44970dcc 100644
--- a/drivers/gpu/drm/panel/panel-sony-tulip-truly-nt35521.c
+++ b/drivers/gpu/drm/panel/panel-sony-tulip-truly-nt35521.c
@@ -23,8 +23,6 @@ struct truly_nt35521 {
 	struct regulator_bulk_data supplies[2];
 	struct gpio_desc *reset_gpio;
 	struct gpio_desc *blen_gpio;
-	bool prepared;
-	bool enabled;
 };
 
 static inline
@@ -296,9 +294,6 @@ static int truly_nt35521_prepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 	if (ret < 0) {
 		dev_err(dev, "Failed to enable regulators: %d\n", ret);
@@ -314,7 +309,6 @@ static int truly_nt35521_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	ctx->prepared = true;
 	return 0;
 }
 
@@ -324,9 +318,6 @@ static int truly_nt35521_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = truly_nt35521_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
@@ -335,7 +326,6 @@ static int truly_nt35521_unprepare(struct drm_panel *panel)
 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
 			       ctx->supplies);
 
-	ctx->prepared = false;
 	return 0;
 }
 
@@ -343,12 +333,8 @@ static int truly_nt35521_enable(struct drm_panel *panel)
 {
 	struct truly_nt35521 *ctx = to_truly_nt35521(panel);
 
-	if (ctx->enabled)
-		return 0;
-
 	gpiod_set_value_cansleep(ctx->blen_gpio, 1);
 
-	ctx->enabled = true;
 	return 0;
 }
 
@@ -356,12 +342,8 @@ static int truly_nt35521_disable(struct drm_panel *panel)
 {
 	struct truly_nt35521 *ctx = to_truly_nt35521(panel);
 
-	if (!ctx->enabled)
-		return 0;
-
 	gpiod_set_value_cansleep(ctx->blen_gpio, 0);
 
-	ctx->enabled = false;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c b/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c
index 6e77a2d71d..0156689f41 100644
--- a/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c
+++ b/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c
@@ -35,7 +35,6 @@ enum {
 };
 
 struct stk_panel {
-	bool prepared;
 	const struct drm_display_mode *mode;
 	struct backlight_device *backlight;
 	struct drm_panel base;
@@ -145,16 +144,11 @@ static int stk_panel_unprepare(struct drm_panel *panel)
 {
 	struct stk_panel *stk = to_stk_panel(panel);
 
-	if (!stk->prepared)
-		return 0;
-
 	stk_panel_off(stk);
 	regulator_bulk_disable(ARRAY_SIZE(stk->supplies), stk->supplies);
 	gpiod_set_value(stk->reset_gpio, 0);
 	gpiod_set_value(stk->enable_gpio, 1);
 
-	stk->prepared = false;
-
 	return 0;
 }
 
@@ -164,9 +158,6 @@ static int stk_panel_prepare(struct drm_panel *panel)
 	struct device *dev = &stk->dsi->dev;
 	int ret;
 
-	if (stk->prepared)
-		return 0;
-
 	gpiod_set_value(stk->reset_gpio, 0);
 	gpiod_set_value(stk->enable_gpio, 0);
 	ret = regulator_enable(stk->supplies[IOVCC].consumer);
@@ -195,8 +186,6 @@ static int stk_panel_prepare(struct drm_panel *panel)
 		goto poweroff;
 	}
 
-	stk->prepared = true;
-
 	return 0;
 
 poweroff:
diff --git a/drivers/gpu/drm/panel/panel-truly-nt35597.c b/drivers/gpu/drm/panel/panel-truly-nt35597.c
index 4f4009f9fe..b73448cf34 100644
--- a/drivers/gpu/drm/panel/panel-truly-nt35597.c
+++ b/drivers/gpu/drm/panel/panel-truly-nt35597.c
@@ -64,8 +64,6 @@ struct truly_nt35597 {
 	struct mipi_dsi_device *dsi[2];
 
 	const struct nt35597_config *config;
-	bool prepared;
-	bool enabled;
 };
 
 static inline struct truly_nt35597 *panel_to_ctx(struct drm_panel *panel)
@@ -313,16 +311,12 @@ static int truly_nt35597_disable(struct drm_panel *panel)
 	struct truly_nt35597 *ctx = panel_to_ctx(panel);
 	int ret;
 
-	if (!ctx->enabled)
-		return 0;
-
 	if (ctx->backlight) {
 		ret = backlight_disable(ctx->backlight);
 		if (ret < 0)
 			dev_err(ctx->dev, "backlight disable failed %d\n", ret);
 	}
 
-	ctx->enabled = false;
 	return 0;
 }
 
@@ -331,9 +325,6 @@ static int truly_nt35597_unprepare(struct drm_panel *panel)
 	struct truly_nt35597 *ctx = panel_to_ctx(panel);
 	int ret = 0;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ctx->dsi[0]->mode_flags = 0;
 	ctx->dsi[1]->mode_flags = 0;
 
@@ -354,7 +345,6 @@ static int truly_nt35597_unprepare(struct drm_panel *panel)
 	if (ret < 0)
 		dev_err(ctx->dev, "power_off failed ret = %d\n", ret);
 
-	ctx->prepared = false;
 	return ret;
 }
 
@@ -367,9 +357,6 @@ static int truly_nt35597_prepare(struct drm_panel *panel)
 	const struct nt35597_config *config;
 	u32 num_cmds;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = truly_35597_power_on(ctx);
 	if (ret < 0)
 		return ret;
@@ -409,8 +396,6 @@ static int truly_nt35597_prepare(struct drm_panel *panel)
 	/* Per DSI spec wait 120ms after sending set_display_on DCS command */
 	msleep(120);
 
-	ctx->prepared = true;
-
 	return 0;
 
 power_off:
@@ -424,17 +409,12 @@ static int truly_nt35597_enable(struct drm_panel *panel)
 	struct truly_nt35597 *ctx = panel_to_ctx(panel);
 	int ret;
 
-	if (ctx->enabled)
-		return 0;
-
 	if (ctx->backlight) {
 		ret = backlight_enable(ctx->backlight);
 		if (ret < 0)
 			dev_err(ctx->dev, "backlight enable failed %d\n", ret);
 	}
 
-	ctx->enabled = true;
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/panel/panel-visionox-r66451.c b/drivers/gpu/drm/panel/panel-visionox-r66451.c
index 00fc28ad3d..fbb73464de 100644
--- a/drivers/gpu/drm/panel/panel-visionox-r66451.c
+++ b/drivers/gpu/drm/panel/panel-visionox-r66451.c
@@ -22,7 +22,6 @@ struct visionox_r66451 {
 	struct mipi_dsi_device *dsi;
 	struct gpio_desc *reset_gpio;
 	struct regulator_bulk_data supplies[2];
-	bool prepared, enabled;
 };
 
 static inline struct visionox_r66451 *to_visionox_r66451(struct drm_panel *panel)
@@ -124,9 +123,6 @@ static int visionox_r66451_prepare(struct drm_panel *panel)
 	struct device *dev = &dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
 				    ctx->supplies);
 	if (ret < 0)
@@ -144,7 +140,6 @@ static int visionox_r66451_prepare(struct drm_panel *panel)
 
 	mipi_dsi_compression_mode(ctx->dsi, true);
 
-	ctx->prepared = true;
 	return 0;
 }
 
@@ -154,9 +149,6 @@ static int visionox_r66451_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = visionox_r66451_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
@@ -164,7 +156,6 @@ static int visionox_r66451_unprepare(struct drm_panel *panel)
 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 
-	ctx->prepared = false;
 	return 0;
 }
 
@@ -190,9 +181,6 @@ static int visionox_r66451_enable(struct drm_panel *panel)
 	struct drm_dsc_picture_parameter_set pps;
 	int ret;
 
-	if (ctx->enabled)
-		return 0;
-
 	if (!dsi->dsc) {
 		dev_err(&dsi->dev, "DSC not attached to DSI\n");
 		return -ENODEV;
@@ -219,8 +207,6 @@ static int visionox_r66451_enable(struct drm_panel *panel)
 	}
 	msleep(20);
 
-	ctx->enabled = true;
-
 	return 0;
 }
 
@@ -231,8 +217,6 @@ static int visionox_r66451_disable(struct drm_panel *panel)
 	struct device *dev = &dsi->dev;
 	int ret;
 
-	ctx->enabled = false;
-
 	ret = mipi_dsi_dcs_set_display_off(dsi);
 	if (ret < 0) {
 		dev_err(dev, "Failed to set display off: %d\n", ret);
diff --git a/drivers/gpu/drm/panel/panel-visionox-rm69299.c b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
index c2806e4fd5..7751446952 100644
--- a/drivers/gpu/drm/panel/panel-visionox-rm69299.c
+++ b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
@@ -20,8 +20,6 @@ struct visionox_rm69299 {
 	struct regulator_bulk_data supplies[2];
 	struct gpio_desc *reset_gpio;
 	struct mipi_dsi_device *dsi;
-	bool prepared;
-	bool enabled;
 };
 
 static inline struct visionox_rm69299 *panel_to_ctx(struct drm_panel *panel)
@@ -80,7 +78,6 @@ static int visionox_rm69299_unprepare(struct drm_panel *panel)
 
 	ret = visionox_rm69299_power_off(ctx);
 
-	ctx->prepared = false;
 	return ret;
 }
 
@@ -89,9 +86,6 @@ static int visionox_rm69299_prepare(struct drm_panel *panel)
 	struct visionox_rm69299 *ctx = panel_to_ctx(panel);
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = visionox_rm69299_power_on(ctx);
 	if (ret < 0)
 		return ret;
@@ -140,8 +134,6 @@ static int visionox_rm69299_prepare(struct drm_panel *panel)
 	/* Per DSI spec wait 120ms after sending set_display_on DCS command */
 	msleep(120);
 
-	ctx->prepared = true;
-
 	return 0;
 
 power_off:
diff --git a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
index bb0dfd86ea..a23407b9f6 100644
--- a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
+++ b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
@@ -20,7 +20,6 @@ struct visionox_vtdr6130 {
 	struct mipi_dsi_device *dsi;
 	struct gpio_desc *reset_gpio;
 	struct regulator_bulk_data supplies[3];
-	bool prepared;
 };
 
 static inline struct visionox_vtdr6130 *to_visionox_vtdr6130(struct drm_panel *panel)
@@ -157,9 +156,6 @@ static int visionox_vtdr6130_prepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (ctx->prepared)
-		return 0;
-
 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
 				    ctx->supplies);
 	if (ret < 0)
@@ -175,7 +171,6 @@ static int visionox_vtdr6130_prepare(struct drm_panel *panel)
 		return ret;
 	}
 
-	ctx->prepared = true;
 	return 0;
 }
 
@@ -185,9 +180,6 @@ static int visionox_vtdr6130_unprepare(struct drm_panel *panel)
 	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
-	if (!ctx->prepared)
-		return 0;
-
 	ret = visionox_vtdr6130_off(ctx);
 	if (ret < 0)
 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
@@ -196,7 +188,6 @@ static int visionox_vtdr6130_unprepare(struct drm_panel *panel)
 
 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 
-	ctx->prepared = false;
 	return 0;
 }