diff options
| author | Keerthy <[email protected]> | 2025-02-17 16:27:17 +0530 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-03-03 14:22:17 -0600 |
| commit | 07cb392b11382bc730c74c563e58ae8bcc908c48 (patch) | |
| tree | a6c54ead1b57b2b0a759bab96f1c0e43163154e3 | |
| parent | 5c33fb028865bdc490aa0db2980987149786b00f (diff) | |
arm: mach-k3: j722s: Initialize MCU & MAIN Domain ESMs
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 <[email protected]>
Reviewed-by: Udit Kumar <[email protected]>
| -rw-r--r-- | arch/arm/mach-k3/j722s/j722s_init.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-k3/j722s/j722s_init.c b/arch/arm/mach-k3/j722s/j722s_init.c index f8c5c2a5edc..af211377e7c 100644 --- a/arch/arm/mach-k3/j722s/j722s_init.c +++ b/arch/arm/mach-k3/j722s/j722s_init.c @@ -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) |