diff options
| author | Santhosh Kumar K <s-k6@ti.com> | 2024-02-14 16:27:56 +0530 |
|---|---|---|
| committer | Francesco Dolcini <francesco.dolcini@toradex.com> | 2024-03-21 14:26:33 +0000 |
| commit | 9f6dfaaf3101efcef999d0e193187e0d2f682e29 (patch) | |
| tree | 34ed177bf4f4e31232e8f3c5c61d241c1f827f6f /arch | |
| parent | fd2bac3c1f738c1bedf365cd53d97e5742bf47e0 (diff) | |
arm: mach-k3: am62*_init: Probe ESM nodes
On AM62A and AM62P devices, it is possible to route Main ESM error
events to MCU ESM. MCU ESM high error output can trigger the reset
logic to reset the device. So, for these devices we have Main ESM and
MCU ESM nodes in the device tree. Add functions to probe these nodes
if CONFIG_ESM_K3 is enabled.
Signed-off-by: Santhosh Kumar K <s-k6@ti.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-k3/am62a7_init.c | 26 | ||||
| -rw-r--r-- | arch/arm/mach-k3/am62p5_init.c | 26 |
2 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mach-k3/am62a7_init.c b/arch/arm/mach-k3/am62a7_init.c index 5a96683c53..b3efe9c36e 100644 --- a/arch/arm/mach-k3/am62a7_init.c +++ b/arch/arm/mach-k3/am62a7_init.c @@ -14,6 +14,9 @@ #include <dm/uclass-internal.h> #include <dm/pinctrl.h> +#define CTRLMMR_MCU_RST_CTRL 0x04518170 +#define RST_CTRL_ESM_ERROR_RST_EN_Z_MASK 0xFFFDFFFF + struct fwl_data cbass_main_fwls[] = { { "FSS_DAT_REG3", 7, 8 }, }; @@ -83,6 +86,15 @@ static void setup_qos(void) } #endif +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) { struct udevice *dev; @@ -175,6 +187,20 @@ void board_init_f(ulong dummy) /* Disable ROM configured firewalls right after loading sysfw */ remove_fwl_configs(cbass_main_fwls, ARRAY_SIZE(cbass_main_fwls)); + 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); + + /* Probe/configure MCUESM */ + ret = uclass_get_device_by_name(UCLASS_MISC, "esm@4100000", &dev); + if (ret) + printf("esm mcu init failed: %d\n", ret); + + enable_mcu_esm_reset(); + } + #if defined(CONFIG_K3_AM62A_DDRSS) ret = uclass_get_device(UCLASS_RAM, 0, &dev); if (ret) diff --git a/arch/arm/mach-k3/am62p5_init.c b/arch/arm/mach-k3/am62p5_init.c index 19ddefc3e9..08ad6cfee1 100644 --- a/arch/arm/mach-k3/am62p5_init.c +++ b/arch/arm/mach-k3/am62p5_init.c @@ -14,6 +14,9 @@ #include <dm/uclass-internal.h> #include <dm/pinctrl.h> +#define CTRLMMR_MCU_RST_CTRL 0x04518170 +#define RST_CTRL_ESM_ERROR_RST_EN_Z_MASK 0xFFFDFFFF + struct fwl_data cbass_main_fwls[] = { { "FSS_DAT_REG3", 7, 8 }, }; @@ -66,6 +69,15 @@ static void ctrl_mmr_unlock(void) mmr_unlock(PADCFG_MMR1_BASE, 1); } +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) { struct udevice *dev; @@ -153,6 +165,20 @@ void board_init_f(ulong dummy) /* Disable ROM configured firewalls right after loading sysfw */ remove_fwl_configs(cbass_main_fwls, ARRAY_SIZE(cbass_main_fwls)); + 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); + + /* Probe/configure MCUESM */ + ret = uclass_get_device_by_name(UCLASS_MISC, "esm@4100000", &dev); + if (ret) + printf("esm mcu init failed: %d\n", ret); + + enable_mcu_esm_reset(); + } + #if defined(CONFIG_K3_AM62A_DDRSS) ret = uclass_get_device(UCLASS_RAM, 0, &dev); if (ret) |