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sysreset: implement TPS80031 sysreset functions

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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>
This commit is contained in:
Svyatoslav Ryhel 2023-10-24 10:49:06 +03:00 committed by Tom Rini
parent fa1e72ea3d
commit 9d937cdc2c
5 changed files with 64 additions and 1 deletions
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11
drivers/power/pmic/tps80031.c
View file

@ -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)) {

8
drivers/sysreset/Kconfig
View file

@ -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

1
drivers/sysreset/Makefile
View file

@ -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

40
drivers/sysreset/sysreset_tps80031.c Normal file
View file

@ -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,
};

5
include/power/tps80031.h
View file

@ -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,