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sysreset: implement TPS65910 sysreset functions

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TPS65910/TPS65911 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 10:49:07 +03:00 committed by Tom Rini
parent 9d937cdc2c
commit 8b8a00eaf4
5 changed files with 81 additions and 1 deletions
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12
drivers/power/pmic/pmic_tps65910_dm.c
View file

@ -5,6 +5,7 @@
#include <common.h>
#include <dm.h>
#include <dm/lists.h>
#include <i2c.h>
#include <log.h>
#include <linux/printk.h>
@ -59,7 +60,16 @@ static int pmic_tps65910_bind(struct udevice *dev)
const struct pmic_child_info *tps6591x_children_info =
(struct pmic_child_info *)dev_get_driver_data(dev);
ofnode regulators_node;
int children;
int children, ret;
if (IS_ENABLED(CONFIG_SYSRESET_TPS65910)) {
ret = device_bind_driver(dev, TPS65910_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_TPS65910
bool "Enable support for TPS65910/TPS65911 PMIC System Reset"
depends on DM_PMIC_TPS65910
select SYSRESET_CMD_POWEROFF if CMD_POWEROFF
help
Enable system power management functions found in TPS65910/TPS65911
PMICs.
config SYSRESET_TPS80031
bool "Enable support for TPS80031/TPS80032 PMIC System Reset"
depends on DM_PMIC_TPS80031

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_TPS65910) += sysreset_tps65910.o
obj-$(CONFIG_$(SPL_TPL_)SYSRESET_TPS80031) += sysreset_tps80031.o
obj-$(CONFIG_SYSRESET_SYSCON) += sysreset_syscon.o
obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o

54
drivers/sysreset/sysreset_tps65910.c Normal file
View file

@ -0,0 +1,54 @@
// 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/tps65910_pmic.h>
static int tps65910_sysreset_request(struct udevice *dev,
enum sysreset_t type)
{
int val;
val = pmic_reg_read(dev->parent, TPS65910_REG_DEVICE_CTRL);
if (val < 0)
return val;
/* define power-off to be sequential */
val |= PWR_OFF_SEQ;
pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL, val);
val &= ~DEV_ON;
switch (type) {
case SYSRESET_POWER:
/* TPS65910: DEV_OFF_RST > DEVICE_CTRL */
pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL,
val | DEV_OFF_RST);
break;
case SYSRESET_POWER_OFF:
/* TPS65910: DEV_OFF > DEVICE_CTRL */
pmic_reg_write(dev->parent, TPS65910_REG_DEVICE_CTRL,
val | DEV_OFF);
break;
default:
return -EPROTONOSUPPORT;
}
return -EINPROGRESS;
}
static struct sysreset_ops tps65910_sysreset = {
.request = tps65910_sysreset_request,
};
U_BOOT_DRIVER(sysreset_tps65910) = {
.id = UCLASS_SYSRESET,
.name = TPS65910_RST_DRIVER,
.ops = &tps65910_sysreset,
};

7
include/power/tps65910_pmic.h
View file

@ -17,6 +17,12 @@
#define TPS65910_SUPPLY_STATE_OFF 0x0
#define TPS65910_SUPPLY_STATE_ON 0x1
/* TPS65910 DEVICE_CTRL bits */
#define PWR_OFF_SEQ BIT(7)
#define DEV_OFF_RST BIT(3)
#define DEV_ON BIT(2)
#define DEV_OFF BIT(0)
/* i2c registers */
enum {
TPS65910_REG_RTC_SEC = 0x00,
@ -125,6 +131,7 @@ struct tps65910_regulator_pdata {
#define TPS65910_BUCK_DRIVER "tps65910_buck"
#define TPS65910_BOOST_DRIVER "tps65910_boost"
#define TPS65910_LDO_DRIVER "tps65910_ldo"
#define TPS65910_RST_DRIVER "tps65910_rst"
/* tps65911 i2c registers */
enum {