[PATCH 0/3] sysreset: sophgo: milkv_duo: Add sysreset support for Milk-V Duo board

[PATCH 0/3] sysreset: sophgo: milkv_duo: Add sysreset support for Milk-V Duo board

[Kongyang Liu]

This series add sysreset driver for cv1800b SoC and enable poweroff and
reset commands for Sophgo Milk-V Duo board.


Kongyang Liu (3):
  sysreset: cv1800b: Add sysreset driver for cv1800b SoC
  board: sophgo: milkv_duo: Bind sysreset driver
  configs: milkv_duo: Add sysreset configs

 board/sophgo/milkv_duo/board.c      |  4 ++
 configs/milkv_duo_defconfig         |  3 ++
 drivers/sysreset/Kconfig            |  5 +++
 drivers/sysreset/Makefile           |  1 +
 drivers/sysreset/sysreset_cv1800b.c | 64 +++++++++++++++++++++++++++++
 5 files changed, 77 insertions(+)
 create mode 100644 drivers/sysreset/sysreset_cv1800b.c

-- 
2.41.0

[PATCH 1/3] sysreset: cv1800b: Add sysreset driver for cv1800b SoC

[Kongyang Liu]

Add sysreset driver for cv1800b SoC

Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>

---

 drivers/sysreset/Kconfig            |  5 +++
 drivers/sysreset/Makefile           |  1 +
 drivers/sysreset/sysreset_cv1800b.c | 64 +++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+)
 create mode 100644 drivers/sysreset/sysreset_cv1800b.c

diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig
index 49c0787b26..b64bfadb20 100644
--- a/drivers/sysreset/Kconfig
+++ b/drivers/sysreset/Kconfig
@@ -59,6 +59,11 @@ config SYSRESET_CMD_POWEROFF
 
 endif
 
+config SYSRESET_CV1800B
+	bool "Enable support for Sophgo cv1800b System Reset"
+	help
+	  Enable system reset support for Sophgo cv1800b SoC.
+
 config POWEROFF_GPIO
 	bool "Enable support for GPIO poweroff driver"
 	depends on DM_GPIO
diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile
index e0e732205d..d59299aa31 100644
--- a/drivers/sysreset/Makefile
+++ b/drivers/sysreset/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_ARCH_ASPEED) += sysreset_ast.o
 obj-$(CONFIG_ARCH_ROCKCHIP) += sysreset_rockchip.o
 obj-$(CONFIG_ARCH_STI) += sysreset_sti.o
 obj-$(CONFIG_SANDBOX) += sysreset_sandbox.o
+obj-$(CONFIG_SYSRESET_CV1800B) += sysreset_cv1800b.o
 obj-$(CONFIG_POWEROFF_GPIO) += poweroff_gpio.o
 obj-$(CONFIG_SYSRESET_GPIO) += sysreset_gpio.o
 obj-$(CONFIG_$(SPL_TPL_)SYSRESET_MAX77663) += sysreset_max77663.o
diff --git a/drivers/sysreset/sysreset_cv1800b.c b/drivers/sysreset/sysreset_cv1800b.c
new file mode 100644
index 0000000000..9cd62772ef
--- /dev/null
+++ b/drivers/sysreset/sysreset_cv1800b.c
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2024, Kongyang Liu <seashell11234455@gmail.com>
+ */
+
+#include <dm.h>
+#include <stdbool.h>
+#include <sysreset.h>
+#include <wait_bit.h>
+#include <linux/io.h>
+#include <linux/errno.h>
+
+#define REG_RTC_BASE             (void *)0x05026000
+#define REG_RTC_CTRL_BASE        (void *)0x05025000
+#define REG_RTC_EN_SHDN_REQ      (REG_RTC_BASE + 0xc0)
+#define REG_RTC_EN_PWR_CYC_REQ   (REG_RTC_BASE + 0xc8)
+#define REG_RTC_EN_WARM_RST_REQ  (REG_RTC_BASE + 0xcc)
+#define REG_RTC_CTRL_UNLOCKKEY   (REG_RTC_CTRL_BASE + 0x4)
+#define REG_RTC_CTRL             (REG_RTC_CTRL_BASE + 0x8)
+
+#define CTRL_UNLOCKKEY_MAGIC     0xAB18
+
+/* REG_RTC_CTRL */
+#define BIT_REQ_SHDN       BIT(0)
+#define BIT_REQ_PWR_CYC    BIT(3)
+#define BIT_REQ_WARM_RST   BIT(4)
+
+static struct {
+	void *pre_req_reg;
+	u32 req_bit;
+} reset_info[SYSRESET_COUNT] = {
+	[SYSRESET_WARM]      = { REG_RTC_EN_WARM_RST_REQ, BIT_REQ_WARM_RST },
+	[SYSRESET_COLD]      = { REG_RTC_EN_WARM_RST_REQ, BIT_REQ_WARM_RST },
+	[SYSRESET_POWER]     = { REG_RTC_EN_PWR_CYC_REQ, BIT_REQ_PWR_CYC },
+	[SYSRESET_POWER_OFF] = { REG_RTC_EN_SHDN_REQ, BIT_REQ_SHDN },
+};
+
+static int cv1800b_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+	u32 reg;
+
+	writel(1, reset_info[type].pre_req_reg);
+	writel(CTRL_UNLOCKKEY_MAGIC, REG_RTC_CTRL_UNLOCKKEY);
+	reg = readl(REG_RTC_CTRL);
+	writel(0xFFFF0800 | reset_info[type].req_bit, REG_RTC_CTRL);
+
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops cv1800b_sysreset = {
+	.request = cv1800b_sysreset_request,
+};
+
+static const struct udevice_id cv1800b_sysreset_ids[] = {
+	{ .compatible = "sophgo,cv1800b-sysreset", },
+	{},
+};
+
+U_BOOT_DRIVER(sysreset_cv1800b) = {
+	.name = "cv1800b_sysreset",
+	.id	  = UCLASS_SYSRESET,
+	.ops  = &cv1800b_sysreset,
+	.of_match = cv1800b_sysreset_ids
+};
-- 
2.41.0

[PATCH 2/3] board: sophgo: milkv_duo: Bind sysreset driver

[Kongyang Liu]

Bind cv1800b sysreset driver for Sophgo Milk-V Duo board in board_init
function.

Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
---

 board/sophgo/milkv_duo/board.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/board/sophgo/milkv_duo/board.c b/board/sophgo/milkv_duo/board.c
index eaa47be173..e7e28fe248 100644
--- a/board/sophgo/milkv_duo/board.c
+++ b/board/sophgo/milkv_duo/board.c
@@ -3,7 +3,11 @@
  * Copyright (c) 2024, Kongyang Liu <seashell11234455@gmail.com>
  */
 
+ #include <dm/lists.h>
+
 int board_init(void)
 {
+	if (IS_ENABLED(CONFIG_SYSRESET_CV1800B))
+		device_bind_driver(gd->dm_root, "cv1800b_sysreset", "sysreset", NULL);
 	return 0;
 }
-- 
2.41.0

[PATCH 3/3] configs: milkv_duo: Add sysreset configs

[Kongyang Liu]

Add sysreset configs as well as poweroff and reset commands for Sophgo
Milk-V Duo board.

Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
---

 configs/milkv_duo_defconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configs/milkv_duo_defconfig b/configs/milkv_duo_defconfig
index e8413d7aa9..28bd4b53d3 100644
--- a/configs/milkv_duo_defconfig
+++ b/configs/milkv_duo_defconfig
@@ -19,6 +19,7 @@ CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="milkv_duo# "
 CONFIG_CMD_MMC=y
 CONFIG_CMD_PART=y
+CONFIG_CMD_POWEROFF=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_ENV_OVERWRITE=y
@@ -30,3 +31,5 @@ CONFIG_MMC_SDHCI_ADMA=y
 CONFIG_MMC_SDHCI_CV1800B=y
 CONFIG_SYS_NS16550=y
 CONFIG_SYS_NS16550_MEM32=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_CV1800B=y
-- 
2.41.0

Re: [PATCH 3/3] configs: milkv_duo: Add sysreset configs

[Leo Liang]

On Tue, Apr 16, 2024 at 03:52:40PM +0800, Kongyang Liu wrote:
> Add sysreset configs as well as poweroff and reset commands for Sophgo
> Milk-V Duo board.
> 
> Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
> ---
> 
>  configs/milkv_duo_defconfig | 3 +++
>  1 file changed, 3 insertions(+)

Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>

Re: [PATCH 2/3] board: sophgo: milkv_duo: Bind sysreset driver

[Leo Liang]

On Tue, Apr 16, 2024 at 03:52:39PM +0800, Kongyang Liu wrote:
> Bind cv1800b sysreset driver for Sophgo Milk-V Duo board in board_init
> function.
> 
> Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
> ---
> 
>  board/sophgo/milkv_duo/board.c | 4 ++++
>  1 file changed, 4 insertions(+)

Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>

Re: [PATCH 1/3] sysreset: cv1800b: Add sysreset driver for cv1800b SoC

[Leo Liang]

On Tue, Apr 16, 2024 at 03:52:38PM +0800, Kongyang Liu wrote:
> Add sysreset driver for cv1800b SoC
> 
> Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
> ---
> 
>  drivers/sysreset/Kconfig            |  5 +++
>  drivers/sysreset/Makefile           |  1 +
>  drivers/sysreset/sysreset_cv1800b.c | 64 +++++++++++++++++++++++++++++
>  3 files changed, 70 insertions(+)
>  create mode 100644 drivers/sysreset/sysreset_cv1800b.c

Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>