diff options
| author | Svyatoslav Ryhel <clamor95@gmail.com> | 2023-10-24 10:49:06 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-11-03 17:41:54 -0400 |
| commit | 9d937cdc2ce831adfef969ced5e35b72a3131dea (patch) | |
| tree | ee11de56b5133cd24222b71456ff30d9b86028f1 | |
| parent | fa1e72ea3d62f561fb990113ce404ad603d61e83 (diff) | |
| download | u-boot-9d937cdc2ce831adfef969ced5e35b72a3131dea.zip u-boot-9d937cdc2ce831adfef969ced5e35b72a3131dea.tar.gz u-boot-9d937cdc2ce831adfef969ced5e35b72a3131dea.tar.bz2 | |
sysreset: implement TPS80031 sysreset functions
TPS80031/TPS80032 PMICs have embedded power control functions
used by some device to initiane device power off. Implement it as
sysreset driver.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
| -rw-r--r-- | drivers/power/pmic/tps80031.c | 11 | ||||
| -rw-r--r-- | drivers/sysreset/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/sysreset/Makefile | 1 | ||||
| -rw-r--r-- | drivers/sysreset/sysreset_tps80031.c | 40 | ||||
| -rw-r--r-- | include/power/tps80031.h | 5 |
5 files changed, 64 insertions, 1 deletions
diff --git a/drivers/power/pmic/tps80031.c b/drivers/power/pmic/tps80031.c index 6b36ebb..a2f935b 100644 --- a/drivers/power/pmic/tps80031.c +++ b/drivers/power/pmic/tps80031.c @@ -44,7 +44,16 @@ static int tps80031_read(struct udevice *dev, uint reg, uint8_t *buff, int len) static int tps80031_bind(struct udevice *dev) { ofnode regulators_node; - int children; + int children, ret; + + if (IS_ENABLED(CONFIG_SYSRESET_TPS80031)) { + ret = device_bind_driver(dev, TPS80031_RST_DRIVER, + "sysreset", NULL); + if (ret) { + log_err("cannot bind SYSRESET (ret = %d)\n", ret); + return ret; + } + } regulators_node = dev_read_subnode(dev, "regulators"); if (!ofnode_valid(regulators_node)) { diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig index bc35896..cdb4ae2 100644 --- a/drivers/sysreset/Kconfig +++ b/drivers/sysreset/Kconfig @@ -157,6 +157,14 @@ config SYSRESET_TI_SCI This enables the system reset driver support over TI System Control Interface available on some new TI's SoCs. +config SYSRESET_TPS80031 + bool "Enable support for TPS80031/TPS80032 PMIC System Reset" + depends on DM_PMIC_TPS80031 + select SYSRESET_CMD_POWEROFF if CMD_POWEROFF + help + Enable system power management functions found in TPS80031/TPS80032 + PMICs. + config SYSRESET_SYSCON bool "Enable support for mfd syscon reboot driver" select REGMAP diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile index c31f51c..f62db89 100644 --- a/drivers/sysreset/Makefile +++ b/drivers/sysreset/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_SYSRESET_SOCFPGA) += sysreset_socfpga.o obj-$(CONFIG_SYSRESET_SOCFPGA_SOC64) += sysreset_socfpga_soc64.o obj-$(CONFIG_SYSRESET_TEGRA) += sysreset_tegra.o obj-$(CONFIG_SYSRESET_TI_SCI) += sysreset-ti-sci.o +obj-$(CONFIG_$(SPL_TPL_)SYSRESET_TPS80031) += sysreset_tps80031.o obj-$(CONFIG_SYSRESET_SYSCON) += sysreset_syscon.o obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o obj-$(CONFIG_SYSRESET_RESETCTL) += sysreset_resetctl.o diff --git a/drivers/sysreset/sysreset_tps80031.c b/drivers/sysreset/sysreset_tps80031.c new file mode 100644 index 0000000..50024fe --- /dev/null +++ b/drivers/sysreset/sysreset_tps80031.c @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com> + */ + +#include <dm.h> +#include <i2c.h> +#include <errno.h> +#include <sysreset.h> +#include <power/pmic.h> +#include <power/tps80031.h> + +static int tps80031_sysreset_request(struct udevice *dev, + enum sysreset_t type) +{ + switch (type) { + case SYSRESET_POWER: + /* TPS80031: SW_RESET > PHOENIX_DEV_ON */ + pmic_reg_write(dev->parent, TPS80031_PHOENIX_DEV_ON, SW_RESET); + break; + case SYSRESET_POWER_OFF: + /* TPS80031: DEVOFF > PHOENIX_DEV_ON */ + pmic_reg_write(dev->parent, TPS80031_PHOENIX_DEV_ON, DEVOFF); + break; + default: + return -EPROTONOSUPPORT; + } + + return -EINPROGRESS; +} + +static struct sysreset_ops tps80031_sysreset = { + .request = tps80031_sysreset_request, +}; + +U_BOOT_DRIVER(sysreset_tps80031) = { + .id = UCLASS_SYSRESET, + .name = TPS80031_RST_DRIVER, + .ops = &tps80031_sysreset, +}; diff --git a/include/power/tps80031.h b/include/power/tps80031.h index c80692a..983c841 100644 --- a/include/power/tps80031.h +++ b/include/power/tps80031.h @@ -12,6 +12,7 @@ /* Drivers name */ #define TPS80031_LDO_DRIVER "tps80031_ldo" #define TPS80031_SMPS_DRIVER "tps80031_smps" +#define TPS80031_RST_DRIVER "tps80031_rst" #define TPS80031_SMPS_OFFSET 0xe0 #define TPS80031_OFFSET_FLAG BIT(0) @@ -35,6 +36,10 @@ #define LDO_VOLT_MIN 1018000 #define LDO_VOLT_BASE 916000 +#define TPS80031_PHOENIX_DEV_ON 0x25 +#define SW_RESET BIT(6) +#define DEVOFF BIT(0) + /* register groups */ enum { CTRL, |