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>
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_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 @@
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-$(CONFIG_SYSRESET_SOCFPGA_SOC64) += sysreset_socfpga_soc64.o
obj-$(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,