Merge patch series "k3-j784s4*: Enable ESMs and related PMIC"
Udit Kumar <u-kumar1@ti.com> says:
This series enables the ESMs and the associated PMIC. Programming these bits is
a requirement to make the watchdog actually reset the board.
Series supports WDT reset on all TI platforms based upon J784S4 SOC
including cut down (J742S2).
Bootlogs for reset
AM69: https://gist.github.com/uditkumarti/dca2171aafd6d50c82159346f9a0102f#file-am69-L2466
J784S4: https://gist.github.com/uditkumarti/dca2171aafd6d50c82159346f9a0102f#file-j784s4-L2704
J742S2: https://gist.github.com/uditkumarti/dca2171aafd6d50c82159346f9a0102f#file-j742s2-L2614
Link: https://lore.kernel.org/r/20250427070323.590449-1-u-kumar1@ti.com
diff --git a/arch/arm/dts/k3-am69-r5-sk.dts b/arch/arm/dts/k3-am69-r5-sk.dts
index 9c6e324..e836264 100644
--- a/arch/arm/dts/k3-am69-r5-sk.dts
+++ b/arch/arm/dts/k3-am69-r5-sk.dts
@@ -10,3 +10,10 @@
#include "k3-j784s4-ddr.dtsi"
#include "k3-am69-sk-u-boot.dtsi"
#include "k3-j784s4-r5.dtsi"
+
+&tps659413 {
+ esm: esm {
+ compatible = "ti,tps659413-esm";
+ bootph-pre-ram;
+ };
+};
diff --git a/arch/arm/dts/k3-j784s4-r5-evm.dts b/arch/arm/dts/k3-j784s4-r5-evm.dts
index 0eeffa7..fc20438 100644
--- a/arch/arm/dts/k3-j784s4-r5-evm.dts
+++ b/arch/arm/dts/k3-j784s4-r5-evm.dts
@@ -10,3 +10,10 @@
#include "k3-j784s4-ddr.dtsi"
#include "k3-j784s4-evm-u-boot.dtsi"
#include "k3-j784s4-r5.dtsi"
+
+&tps659413 {
+ esm: esm {
+ compatible = "ti,tps659413-esm";
+ bootph-pre-ram;
+ };
+};
diff --git a/board/ti/j784s4/evm.c b/board/ti/j784s4/evm.c
index c6e46b7..c8d01bf 100644
--- a/board/ti/j784s4/evm.c
+++ b/board/ti/j784s4/evm.c
@@ -7,6 +7,7 @@
*
*/
+#include <dm.h>
#include <efi_loader.h>
#include <init.h>
#include <spl.h>
@@ -67,4 +68,27 @@
void spl_board_init(void)
{
+ struct udevice *dev;
+ int ret;
+
+ if (IS_ENABLED(CONFIG_ESM_K3)) {
+ const char * const esms[] = {"esm@700000", "esm@40800000", "esm@42080000"};
+
+ for (int i = 0; i < ARRAY_SIZE(esms); ++i) {
+ ret = uclass_get_device_by_name(UCLASS_MISC, esms[i],
+ &dev);
+ if (ret) {
+ printf("MISC init for %s failed: %d\n", esms[i], ret);
+ break;
+ }
+ }
+ }
+
+ if (IS_ENABLED(CONFIG_ESM_PMIC) && ret == 0) {
+ ret = uclass_get_device_by_driver(UCLASS_MISC,
+ DM_DRIVER_GET(pmic_esm),
+ &dev);
+ if (ret)
+ printf("ESM PMIC init failed: %d\n", ret);
+ }
}
diff --git a/configs/j784s4_evm_r5_defconfig b/configs/j784s4_evm_r5_defconfig
index 5a5b045..8e5b777 100644
--- a/configs/j784s4_evm_r5_defconfig
+++ b/configs/j784s4_evm_r5_defconfig
@@ -125,6 +125,11 @@
CONFIG_PINCTRL_SINGLE=y
CONFIG_POWER_DOMAIN=y
CONFIG_TI_POWER_DOMAIN=y
+CONFIG_ESM_K3=y
+CONFIG_ESM_PMIC=y
+CONFIG_DM_PMIC=y
+CONFIG_PMIC_TPS65941=y
+CONFIG_DM_REGULATOR_TPS65941=y
CONFIG_DM_REGULATOR=y
CONFIG_SPL_DM_REGULATOR=y
CONFIG_SPL_DM_REGULATOR_TPS6287X=y