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arm: mach-k3: j722s: Initialize MCU & MAIN Domain ESMs

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Initialize MCU & MAIN Domain ESMs as a prerequisite to enable
watchdog reset functionality. The ESM aka error signalling module
is primarily responsible for sensing the watchdog reset event.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Udit Kumar <u-kumar1@ti.com>
This commit is contained in:
Keerthy
2025-03-03 14:22:17 -06:00
committed by Tom Rini
parent 5c33fb0288
commit 07cb392b11
1 changed files with 32 additions and 0 deletions
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arch/arm/mach-k3/j722s/j722s_init.c
+32
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@@ -27,6 +27,9 @@ struct fwl_data cbass_main_fwls[] = {
u32 bootindex __section(".data");
static struct rom_extended_boot_data bootdata __section(".data");
#define CTRLMMR_MCU_RST_CTRL (MCU_CTRL_MMR0_BASE + 0x18170)
#define RST_CTRL_ESM_ERROR_RST_EN_Z_MASK (~BIT(17))
static void store_boot_info_from_rom(void)
{
bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
@@ -161,11 +164,40 @@ static void k3_mem_init(void)
}
}
static __maybe_unused void enable_mcu_esm_reset(void)
{
/* Set CTRLMMR_MCU_RST_CTRL:MCU_ESM_ERROR_RST_EN_Z to '0' (low active) */
u32 stat = readl(CTRLMMR_MCU_RST_CTRL);
stat &= RST_CTRL_ESM_ERROR_RST_EN_Z_MASK;
writel(stat, CTRLMMR_MCU_RST_CTRL);
}
void board_init_f(ulong dummy)
{
int ret;
struct udevice *dev;
k3_spl_init();
k3_mem_init();
setup_qos();
if (IS_ENABLED(CONFIG_ESM_K3)) {
/* Probe/configure ESM0 */
ret = uclass_get_device_by_name(UCLASS_MISC, "esm@420000", &dev);
if (ret) {
printf("esm main init failed: %d\n", ret);
return;
}
/* Probe/configure MCUESM */
ret = uclass_get_device_by_name(UCLASS_MISC, "esm@4100000", &dev);
if (ret) {
printf("esm mcu init failed: %d\n", ret);
return;
}
enable_mcu_esm_reset();
}
}
static u32 __get_backup_bootmedia(u32 devstat)