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 +};

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; }

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