1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/reset/starfive/reset-starfive-jh7110.c b/drivers/reset/starfive/reset-starfive-jh7110.c
new file mode 100644
index 000000000..29a43f0f2
--- /dev/null
+++ b/drivers/reset/starfive/reset-starfive-jh7110.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Reset driver for the StarFive JH7110 SoC
+ *
+ * Copyright (C) 2022 StarFive Technology Co., Ltd.
+ */
+
+#include <linux/auxiliary_bus.h>
+
+#include <soc/starfive/reset-starfive-jh71x0.h>
+
+#include "reset-starfive-jh71x0.h"
+
+#include <dt-bindings/reset/starfive,jh7110-crg.h>
+
+struct jh7110_reset_info {
+	unsigned int nr_resets;
+	unsigned int assert_offset;
+	unsigned int status_offset;
+};
+
+static const struct jh7110_reset_info jh7110_sys_info = {
+	.nr_resets = JH7110_SYSRST_END,
+	.assert_offset = 0x2F8,
+	.status_offset = 0x308,
+};
+
+static const struct jh7110_reset_info jh7110_aon_info = {
+	.nr_resets = JH7110_AONRST_END,
+	.assert_offset = 0x38,
+	.status_offset = 0x3C,
+};
+
+static const struct jh7110_reset_info jh7110_stg_info = {
+	.nr_resets = JH7110_STGRST_END,
+	.assert_offset = 0x74,
+	.status_offset = 0x78,
+};
+
+static const struct jh7110_reset_info jh7110_isp_info = {
+	.nr_resets = JH7110_ISPRST_END,
+	.assert_offset = 0x38,
+	.status_offset = 0x3C,
+};
+
+static const struct jh7110_reset_info jh7110_vout_info = {
+	.nr_resets = JH7110_VOUTRST_END,
+	.assert_offset = 0x48,
+	.status_offset = 0x4C,
+};
+
+static int jh7110_reset_probe(struct auxiliary_device *adev,
+			      const struct auxiliary_device_id *id)
+{
+	struct jh7110_reset_info *info = (struct jh7110_reset_info *)(id->driver_data);
+	struct jh71x0_reset_adev *rdev = to_jh71x0_reset_adev(adev);
+	void __iomem *base = rdev->base;
+
+	if (!info || !base)
+		return -ENODEV;
+
+	return reset_starfive_jh71x0_register(&adev->dev, adev->dev.parent->of_node,
+					      base + info->assert_offset,
+					      base + info->status_offset,
+					      NULL,
+					      info->nr_resets,
+					      NULL);
+}
+
+static const struct auxiliary_device_id jh7110_reset_ids[] = {
+	{
+		.name = "clk_starfive_jh7110_sys.rst-sys",
+		.driver_data = (kernel_ulong_t)&jh7110_sys_info,
+	},
+	{
+		.name = "clk_starfive_jh7110_sys.rst-aon",
+		.driver_data = (kernel_ulong_t)&jh7110_aon_info,
+	},
+	{
+		.name = "clk_starfive_jh7110_sys.rst-stg",
+		.driver_data = (kernel_ulong_t)&jh7110_stg_info,
+	},
+	{
+		.name = "clk_starfive_jh7110_sys.rst-isp",
+		.driver_data = (kernel_ulong_t)&jh7110_isp_info,
+	},
+	{
+		.name = "clk_starfive_jh7110_sys.rst-vo",
+		.driver_data = (kernel_ulong_t)&jh7110_vout_info,
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(auxiliary, jh7110_reset_ids);
+
+static struct auxiliary_driver jh7110_reset_driver = {
+	.probe		= jh7110_reset_probe,
+	.id_table	= jh7110_reset_ids,
+};
+module_auxiliary_driver(jh7110_reset_driver);
+
+MODULE_AUTHOR("Hal Feng <hal.feng@starfivetech.com>");
+MODULE_DESCRIPTION("StarFive JH7110 reset driver");
+MODULE_LICENSE("GPL");