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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/reset/reset-imx7.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/reset/reset-imx7.c')
-rw-r--r--drivers/reset/reset-imx7.c407
1 files changed, 407 insertions, 0 deletions
diff --git a/drivers/reset/reset-imx7.c b/drivers/reset/reset-imx7.c
new file mode 100644
index 000000000..d2408725e
--- /dev/null
+++ b/drivers/reset/reset-imx7.c
@@ -0,0 +1,407 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2017, Impinj, Inc.
+ *
+ * i.MX7 System Reset Controller (SRC) driver
+ *
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ */
+
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/regmap.h>
+#include <dt-bindings/reset/imx7-reset.h>
+#include <dt-bindings/reset/imx8mq-reset.h>
+#include <dt-bindings/reset/imx8mp-reset.h>
+
+struct imx7_src_signal {
+ unsigned int offset, bit;
+};
+
+struct imx7_src_variant {
+ const struct imx7_src_signal *signals;
+ unsigned int signals_num;
+ struct reset_control_ops ops;
+};
+
+struct imx7_src {
+ struct reset_controller_dev rcdev;
+ struct regmap *regmap;
+ const struct imx7_src_signal *signals;
+};
+
+enum imx7_src_registers {
+ SRC_A7RCR0 = 0x0004,
+ SRC_M4RCR = 0x000c,
+ SRC_ERCR = 0x0014,
+ SRC_HSICPHY_RCR = 0x001c,
+ SRC_USBOPHY1_RCR = 0x0020,
+ SRC_USBOPHY2_RCR = 0x0024,
+ SRC_MIPIPHY_RCR = 0x0028,
+ SRC_PCIEPHY_RCR = 0x002c,
+ SRC_DDRC_RCR = 0x1000,
+};
+
+static int imx7_reset_update(struct imx7_src *imx7src,
+ unsigned long id, unsigned int value)
+{
+ const struct imx7_src_signal *signal = &imx7src->signals[id];
+
+ return regmap_update_bits(imx7src->regmap,
+ signal->offset, signal->bit, value);
+}
+
+static const struct imx7_src_signal imx7_src_signals[IMX7_RESET_NUM] = {
+ [IMX7_RESET_A7_CORE_POR_RESET0] = { SRC_A7RCR0, BIT(0) },
+ [IMX7_RESET_A7_CORE_POR_RESET1] = { SRC_A7RCR0, BIT(1) },
+ [IMX7_RESET_A7_CORE_RESET0] = { SRC_A7RCR0, BIT(4) },
+ [IMX7_RESET_A7_CORE_RESET1] = { SRC_A7RCR0, BIT(5) },
+ [IMX7_RESET_A7_DBG_RESET0] = { SRC_A7RCR0, BIT(8) },
+ [IMX7_RESET_A7_DBG_RESET1] = { SRC_A7RCR0, BIT(9) },
+ [IMX7_RESET_A7_ETM_RESET0] = { SRC_A7RCR0, BIT(12) },
+ [IMX7_RESET_A7_ETM_RESET1] = { SRC_A7RCR0, BIT(13) },
+ [IMX7_RESET_A7_SOC_DBG_RESET] = { SRC_A7RCR0, BIT(20) },
+ [IMX7_RESET_A7_L2RESET] = { SRC_A7RCR0, BIT(21) },
+ [IMX7_RESET_SW_M4C_RST] = { SRC_M4RCR, BIT(1) },
+ [IMX7_RESET_SW_M4P_RST] = { SRC_M4RCR, BIT(2) },
+ [IMX7_RESET_EIM_RST] = { SRC_ERCR, BIT(0) },
+ [IMX7_RESET_HSICPHY_PORT_RST] = { SRC_HSICPHY_RCR, BIT(1) },
+ [IMX7_RESET_USBPHY1_POR] = { SRC_USBOPHY1_RCR, BIT(0) },
+ [IMX7_RESET_USBPHY1_PORT_RST] = { SRC_USBOPHY1_RCR, BIT(1) },
+ [IMX7_RESET_USBPHY2_POR] = { SRC_USBOPHY2_RCR, BIT(0) },
+ [IMX7_RESET_USBPHY2_PORT_RST] = { SRC_USBOPHY2_RCR, BIT(1) },
+ [IMX7_RESET_MIPI_PHY_MRST] = { SRC_MIPIPHY_RCR, BIT(1) },
+ [IMX7_RESET_MIPI_PHY_SRST] = { SRC_MIPIPHY_RCR, BIT(2) },
+ [IMX7_RESET_PCIEPHY] = { SRC_PCIEPHY_RCR, BIT(2) | BIT(1) },
+ [IMX7_RESET_PCIEPHY_PERST] = { SRC_PCIEPHY_RCR, BIT(3) },
+ [IMX7_RESET_PCIE_CTRL_APPS_EN] = { SRC_PCIEPHY_RCR, BIT(6) },
+ [IMX7_RESET_PCIE_CTRL_APPS_TURNOFF] = { SRC_PCIEPHY_RCR, BIT(11) },
+ [IMX7_RESET_DDRC_PRST] = { SRC_DDRC_RCR, BIT(0) },
+ [IMX7_RESET_DDRC_CORE_RST] = { SRC_DDRC_RCR, BIT(1) },
+};
+
+static struct imx7_src *to_imx7_src(struct reset_controller_dev *rcdev)
+{
+ return container_of(rcdev, struct imx7_src, rcdev);
+}
+
+static int imx7_reset_set(struct reset_controller_dev *rcdev,
+ unsigned long id, bool assert)
+{
+ struct imx7_src *imx7src = to_imx7_src(rcdev);
+ const unsigned int bit = imx7src->signals[id].bit;
+ unsigned int value = assert ? bit : 0;
+
+ switch (id) {
+ case IMX7_RESET_PCIEPHY:
+ /*
+ * wait for more than 10us to release phy g_rst and
+ * btnrst
+ */
+ if (!assert)
+ udelay(10);
+ break;
+
+ case IMX7_RESET_PCIE_CTRL_APPS_EN:
+ value = assert ? 0 : bit;
+ break;
+ }
+
+ return imx7_reset_update(imx7src, id, value);
+}
+
+static int imx7_reset_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return imx7_reset_set(rcdev, id, true);
+}
+
+static int imx7_reset_deassert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return imx7_reset_set(rcdev, id, false);
+}
+
+static const struct imx7_src_variant variant_imx7 = {
+ .signals = imx7_src_signals,
+ .signals_num = ARRAY_SIZE(imx7_src_signals),
+ .ops = {
+ .assert = imx7_reset_assert,
+ .deassert = imx7_reset_deassert,
+ },
+};
+
+enum imx8mq_src_registers {
+ SRC_A53RCR0 = 0x0004,
+ SRC_HDMI_RCR = 0x0030,
+ SRC_DISP_RCR = 0x0034,
+ SRC_GPU_RCR = 0x0040,
+ SRC_VPU_RCR = 0x0044,
+ SRC_PCIE2_RCR = 0x0048,
+ SRC_MIPIPHY1_RCR = 0x004c,
+ SRC_MIPIPHY2_RCR = 0x0050,
+ SRC_DDRC2_RCR = 0x1004,
+};
+
+enum imx8mp_src_registers {
+ SRC_SUPERMIX_RCR = 0x0018,
+ SRC_AUDIOMIX_RCR = 0x001c,
+ SRC_MLMIX_RCR = 0x0028,
+ SRC_GPU2D_RCR = 0x0038,
+ SRC_GPU3D_RCR = 0x003c,
+ SRC_VPU_G1_RCR = 0x0048,
+ SRC_VPU_G2_RCR = 0x004c,
+ SRC_VPUVC8KE_RCR = 0x0050,
+ SRC_NOC_RCR = 0x0054,
+};
+
+static const struct imx7_src_signal imx8mq_src_signals[IMX8MQ_RESET_NUM] = {
+ [IMX8MQ_RESET_A53_CORE_POR_RESET0] = { SRC_A53RCR0, BIT(0) },
+ [IMX8MQ_RESET_A53_CORE_POR_RESET1] = { SRC_A53RCR0, BIT(1) },
+ [IMX8MQ_RESET_A53_CORE_POR_RESET2] = { SRC_A53RCR0, BIT(2) },
+ [IMX8MQ_RESET_A53_CORE_POR_RESET3] = { SRC_A53RCR0, BIT(3) },
+ [IMX8MQ_RESET_A53_CORE_RESET0] = { SRC_A53RCR0, BIT(4) },
+ [IMX8MQ_RESET_A53_CORE_RESET1] = { SRC_A53RCR0, BIT(5) },
+ [IMX8MQ_RESET_A53_CORE_RESET2] = { SRC_A53RCR0, BIT(6) },
+ [IMX8MQ_RESET_A53_CORE_RESET3] = { SRC_A53RCR0, BIT(7) },
+ [IMX8MQ_RESET_A53_DBG_RESET0] = { SRC_A53RCR0, BIT(8) },
+ [IMX8MQ_RESET_A53_DBG_RESET1] = { SRC_A53RCR0, BIT(9) },
+ [IMX8MQ_RESET_A53_DBG_RESET2] = { SRC_A53RCR0, BIT(10) },
+ [IMX8MQ_RESET_A53_DBG_RESET3] = { SRC_A53RCR0, BIT(11) },
+ [IMX8MQ_RESET_A53_ETM_RESET0] = { SRC_A53RCR0, BIT(12) },
+ [IMX8MQ_RESET_A53_ETM_RESET1] = { SRC_A53RCR0, BIT(13) },
+ [IMX8MQ_RESET_A53_ETM_RESET2] = { SRC_A53RCR0, BIT(14) },
+ [IMX8MQ_RESET_A53_ETM_RESET3] = { SRC_A53RCR0, BIT(15) },
+ [IMX8MQ_RESET_A53_SOC_DBG_RESET] = { SRC_A53RCR0, BIT(20) },
+ [IMX8MQ_RESET_A53_L2RESET] = { SRC_A53RCR0, BIT(21) },
+ [IMX8MQ_RESET_SW_NON_SCLR_M4C_RST] = { SRC_M4RCR, BIT(0) },
+ [IMX8MQ_RESET_SW_M4C_RST] = { SRC_M4RCR, BIT(1) },
+ [IMX8MQ_RESET_SW_M4P_RST] = { SRC_M4RCR, BIT(2) },
+ [IMX8MQ_RESET_M4_ENABLE] = { SRC_M4RCR, BIT(3) },
+ [IMX8MQ_RESET_OTG1_PHY_RESET] = { SRC_USBOPHY1_RCR, BIT(0) },
+ [IMX8MQ_RESET_OTG2_PHY_RESET] = { SRC_USBOPHY2_RCR, BIT(0) },
+ [IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N] = { SRC_MIPIPHY_RCR, BIT(1) },
+ [IMX8MQ_RESET_MIPI_DSI_RESET_N] = { SRC_MIPIPHY_RCR, BIT(2) },
+ [IMX8MQ_RESET_MIPI_DSI_DPI_RESET_N] = { SRC_MIPIPHY_RCR, BIT(3) },
+ [IMX8MQ_RESET_MIPI_DSI_ESC_RESET_N] = { SRC_MIPIPHY_RCR, BIT(4) },
+ [IMX8MQ_RESET_MIPI_DSI_PCLK_RESET_N] = { SRC_MIPIPHY_RCR, BIT(5) },
+ [IMX8MQ_RESET_PCIEPHY] = { SRC_PCIEPHY_RCR,
+ BIT(2) | BIT(1) },
+ [IMX8MQ_RESET_PCIEPHY_PERST] = { SRC_PCIEPHY_RCR, BIT(3) },
+ [IMX8MQ_RESET_PCIE_CTRL_APPS_EN] = { SRC_PCIEPHY_RCR, BIT(6) },
+ [IMX8MQ_RESET_PCIE_CTRL_APPS_TURNOFF] = { SRC_PCIEPHY_RCR, BIT(11) },
+ [IMX8MQ_RESET_HDMI_PHY_APB_RESET] = { SRC_HDMI_RCR, BIT(0) },
+ [IMX8MQ_RESET_DISP_RESET] = { SRC_DISP_RCR, BIT(0) },
+ [IMX8MQ_RESET_GPU_RESET] = { SRC_GPU_RCR, BIT(0) },
+ [IMX8MQ_RESET_VPU_RESET] = { SRC_VPU_RCR, BIT(0) },
+ [IMX8MQ_RESET_PCIEPHY2] = { SRC_PCIE2_RCR,
+ BIT(2) | BIT(1) },
+ [IMX8MQ_RESET_PCIEPHY2_PERST] = { SRC_PCIE2_RCR, BIT(3) },
+ [IMX8MQ_RESET_PCIE2_CTRL_APPS_EN] = { SRC_PCIE2_RCR, BIT(6) },
+ [IMX8MQ_RESET_PCIE2_CTRL_APPS_TURNOFF] = { SRC_PCIE2_RCR, BIT(11) },
+ [IMX8MQ_RESET_MIPI_CSI1_CORE_RESET] = { SRC_MIPIPHY1_RCR, BIT(0) },
+ [IMX8MQ_RESET_MIPI_CSI1_PHY_REF_RESET] = { SRC_MIPIPHY1_RCR, BIT(1) },
+ [IMX8MQ_RESET_MIPI_CSI1_ESC_RESET] = { SRC_MIPIPHY1_RCR, BIT(2) },
+ [IMX8MQ_RESET_MIPI_CSI2_CORE_RESET] = { SRC_MIPIPHY2_RCR, BIT(0) },
+ [IMX8MQ_RESET_MIPI_CSI2_PHY_REF_RESET] = { SRC_MIPIPHY2_RCR, BIT(1) },
+ [IMX8MQ_RESET_MIPI_CSI2_ESC_RESET] = { SRC_MIPIPHY2_RCR, BIT(2) },
+ [IMX8MQ_RESET_DDRC1_PRST] = { SRC_DDRC_RCR, BIT(0) },
+ [IMX8MQ_RESET_DDRC1_CORE_RESET] = { SRC_DDRC_RCR, BIT(1) },
+ [IMX8MQ_RESET_DDRC1_PHY_RESET] = { SRC_DDRC_RCR, BIT(2) },
+ [IMX8MQ_RESET_DDRC2_PHY_RESET] = { SRC_DDRC2_RCR, BIT(0) },
+ [IMX8MQ_RESET_DDRC2_CORE_RESET] = { SRC_DDRC2_RCR, BIT(1) },
+ [IMX8MQ_RESET_DDRC2_PRST] = { SRC_DDRC2_RCR, BIT(2) },
+};
+
+static int imx8mq_reset_set(struct reset_controller_dev *rcdev,
+ unsigned long id, bool assert)
+{
+ struct imx7_src *imx7src = to_imx7_src(rcdev);
+ const unsigned int bit = imx7src->signals[id].bit;
+ unsigned int value = assert ? bit : 0;
+
+ switch (id) {
+ case IMX8MQ_RESET_PCIEPHY:
+ case IMX8MQ_RESET_PCIEPHY2:
+ /*
+ * wait for more than 10us to release phy g_rst and
+ * btnrst
+ */
+ if (!assert)
+ udelay(10);
+ break;
+
+ case IMX8MQ_RESET_PCIE_CTRL_APPS_EN:
+ case IMX8MQ_RESET_PCIE2_CTRL_APPS_EN:
+ case IMX8MQ_RESET_MIPI_DSI_PCLK_RESET_N:
+ case IMX8MQ_RESET_MIPI_DSI_ESC_RESET_N:
+ case IMX8MQ_RESET_MIPI_DSI_DPI_RESET_N:
+ case IMX8MQ_RESET_MIPI_DSI_RESET_N:
+ case IMX8MQ_RESET_MIPI_DSI_RESET_BYTE_N:
+ case IMX8MQ_RESET_M4_ENABLE:
+ value = assert ? 0 : bit;
+ break;
+ }
+
+ return imx7_reset_update(imx7src, id, value);
+}
+
+static int imx8mq_reset_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return imx8mq_reset_set(rcdev, id, true);
+}
+
+static int imx8mq_reset_deassert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return imx8mq_reset_set(rcdev, id, false);
+}
+
+static const struct imx7_src_variant variant_imx8mq = {
+ .signals = imx8mq_src_signals,
+ .signals_num = ARRAY_SIZE(imx8mq_src_signals),
+ .ops = {
+ .assert = imx8mq_reset_assert,
+ .deassert = imx8mq_reset_deassert,
+ },
+};
+
+static const struct imx7_src_signal imx8mp_src_signals[IMX8MP_RESET_NUM] = {
+ [IMX8MP_RESET_A53_CORE_POR_RESET0] = { SRC_A53RCR0, BIT(0) },
+ [IMX8MP_RESET_A53_CORE_POR_RESET1] = { SRC_A53RCR0, BIT(1) },
+ [IMX8MP_RESET_A53_CORE_POR_RESET2] = { SRC_A53RCR0, BIT(2) },
+ [IMX8MP_RESET_A53_CORE_POR_RESET3] = { SRC_A53RCR0, BIT(3) },
+ [IMX8MP_RESET_A53_CORE_RESET0] = { SRC_A53RCR0, BIT(4) },
+ [IMX8MP_RESET_A53_CORE_RESET1] = { SRC_A53RCR0, BIT(5) },
+ [IMX8MP_RESET_A53_CORE_RESET2] = { SRC_A53RCR0, BIT(6) },
+ [IMX8MP_RESET_A53_CORE_RESET3] = { SRC_A53RCR0, BIT(7) },
+ [IMX8MP_RESET_A53_DBG_RESET0] = { SRC_A53RCR0, BIT(8) },
+ [IMX8MP_RESET_A53_DBG_RESET1] = { SRC_A53RCR0, BIT(9) },
+ [IMX8MP_RESET_A53_DBG_RESET2] = { SRC_A53RCR0, BIT(10) },
+ [IMX8MP_RESET_A53_DBG_RESET3] = { SRC_A53RCR0, BIT(11) },
+ [IMX8MP_RESET_A53_ETM_RESET0] = { SRC_A53RCR0, BIT(12) },
+ [IMX8MP_RESET_A53_ETM_RESET1] = { SRC_A53RCR0, BIT(13) },
+ [IMX8MP_RESET_A53_ETM_RESET2] = { SRC_A53RCR0, BIT(14) },
+ [IMX8MP_RESET_A53_ETM_RESET3] = { SRC_A53RCR0, BIT(15) },
+ [IMX8MP_RESET_A53_SOC_DBG_RESET] = { SRC_A53RCR0, BIT(20) },
+ [IMX8MP_RESET_A53_L2RESET] = { SRC_A53RCR0, BIT(21) },
+ [IMX8MP_RESET_SW_NON_SCLR_M7C_RST] = { SRC_M4RCR, BIT(0) },
+ [IMX8MP_RESET_OTG1_PHY_RESET] = { SRC_USBOPHY1_RCR, BIT(0) },
+ [IMX8MP_RESET_OTG2_PHY_RESET] = { SRC_USBOPHY2_RCR, BIT(0) },
+ [IMX8MP_RESET_SUPERMIX_RESET] = { SRC_SUPERMIX_RCR, BIT(0) },
+ [IMX8MP_RESET_AUDIOMIX_RESET] = { SRC_AUDIOMIX_RCR, BIT(0) },
+ [IMX8MP_RESET_MLMIX_RESET] = { SRC_MLMIX_RCR, BIT(0) },
+ [IMX8MP_RESET_PCIEPHY] = { SRC_PCIEPHY_RCR, BIT(2) },
+ [IMX8MP_RESET_PCIEPHY_PERST] = { SRC_PCIEPHY_RCR, BIT(3) },
+ [IMX8MP_RESET_PCIE_CTRL_APPS_EN] = { SRC_PCIEPHY_RCR, BIT(6) },
+ [IMX8MP_RESET_PCIE_CTRL_APPS_TURNOFF] = { SRC_PCIEPHY_RCR, BIT(11) },
+ [IMX8MP_RESET_HDMI_PHY_APB_RESET] = { SRC_HDMI_RCR, BIT(0) },
+ [IMX8MP_RESET_MEDIA_RESET] = { SRC_DISP_RCR, BIT(0) },
+ [IMX8MP_RESET_GPU2D_RESET] = { SRC_GPU2D_RCR, BIT(0) },
+ [IMX8MP_RESET_GPU3D_RESET] = { SRC_GPU3D_RCR, BIT(0) },
+ [IMX8MP_RESET_GPU_RESET] = { SRC_GPU_RCR, BIT(0) },
+ [IMX8MP_RESET_VPU_RESET] = { SRC_VPU_RCR, BIT(0) },
+ [IMX8MP_RESET_VPU_G1_RESET] = { SRC_VPU_G1_RCR, BIT(0) },
+ [IMX8MP_RESET_VPU_G2_RESET] = { SRC_VPU_G2_RCR, BIT(0) },
+ [IMX8MP_RESET_VPUVC8KE_RESET] = { SRC_VPUVC8KE_RCR, BIT(0) },
+ [IMX8MP_RESET_NOC_RESET] = { SRC_NOC_RCR, BIT(0) },
+};
+
+static int imx8mp_reset_set(struct reset_controller_dev *rcdev,
+ unsigned long id, bool assert)
+{
+ struct imx7_src *imx7src = to_imx7_src(rcdev);
+ const unsigned int bit = imx7src->signals[id].bit;
+ unsigned int value = assert ? bit : 0;
+
+ switch (id) {
+ case IMX8MP_RESET_PCIEPHY:
+ /*
+ * wait for more than 10us to release phy g_rst and
+ * btnrst
+ */
+ if (!assert)
+ udelay(10);
+ break;
+
+ case IMX8MP_RESET_PCIE_CTRL_APPS_EN:
+ case IMX8MP_RESET_PCIEPHY_PERST:
+ value = assert ? 0 : bit;
+ break;
+ }
+
+ return imx7_reset_update(imx7src, id, value);
+}
+
+static int imx8mp_reset_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return imx8mp_reset_set(rcdev, id, true);
+}
+
+static int imx8mp_reset_deassert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return imx8mp_reset_set(rcdev, id, false);
+}
+
+static const struct imx7_src_variant variant_imx8mp = {
+ .signals = imx8mp_src_signals,
+ .signals_num = ARRAY_SIZE(imx8mp_src_signals),
+ .ops = {
+ .assert = imx8mp_reset_assert,
+ .deassert = imx8mp_reset_deassert,
+ },
+};
+
+static int imx7_reset_probe(struct platform_device *pdev)
+{
+ struct imx7_src *imx7src;
+ struct device *dev = &pdev->dev;
+ struct regmap_config config = { .name = "src" };
+ const struct imx7_src_variant *variant = of_device_get_match_data(dev);
+
+ imx7src = devm_kzalloc(dev, sizeof(*imx7src), GFP_KERNEL);
+ if (!imx7src)
+ return -ENOMEM;
+
+ imx7src->signals = variant->signals;
+ imx7src->regmap = syscon_node_to_regmap(dev->of_node);
+ if (IS_ERR(imx7src->regmap)) {
+ dev_err(dev, "Unable to get imx7-src regmap");
+ return PTR_ERR(imx7src->regmap);
+ }
+ regmap_attach_dev(dev, imx7src->regmap, &config);
+
+ imx7src->rcdev.owner = THIS_MODULE;
+ imx7src->rcdev.nr_resets = variant->signals_num;
+ imx7src->rcdev.ops = &variant->ops;
+ imx7src->rcdev.of_node = dev->of_node;
+
+ return devm_reset_controller_register(dev, &imx7src->rcdev);
+}
+
+static const struct of_device_id imx7_reset_dt_ids[] = {
+ { .compatible = "fsl,imx7d-src", .data = &variant_imx7 },
+ { .compatible = "fsl,imx8mq-src", .data = &variant_imx8mq },
+ { .compatible = "fsl,imx8mp-src", .data = &variant_imx8mp },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, imx7_reset_dt_ids);
+
+static struct platform_driver imx7_reset_driver = {
+ .probe = imx7_reset_probe,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ .of_match_table = imx7_reset_dt_ids,
+ },
+};
+module_platform_driver(imx7_reset_driver);
+
+MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
+MODULE_DESCRIPTION("NXP i.MX7 reset driver");
+MODULE_LICENSE("GPL v2");