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arm: mach-k3: am62*_init: Probe ESM nodes

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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>
Signed-off-by: Judith Mendez <jm@ti.com>
This commit is contained in:
Santhosh Kumar K 2025-01-29 17:44:02 -06:00 • committed by Tom Rini
parent d6da3dbaef
commit 630fe2f88a
2 changed files with 52 additions and 0 deletions
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26
arch/arm/mach-k3/am62ax/am62a7_init.c
View file

@ -15,6 +15,9 @@
#include "../sysfw-loader.h"
#include "../common.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 },
};
@ -70,6 +73,15 @@ 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;
@ -160,6 +172,20 @@ void board_init_f(ulong dummy)
/* Output System Firmware version info */
k3_sysfw_print_ver();
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)

26
arch/arm/mach-k3/am62px/am62p5_init.c
View file

@ -15,6 +15,9 @@
#include "../sysfw-loader.h"
#include "../common.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 },
};
@ -67,6 +70,15 @@ 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;
@ -158,6 +170,20 @@ void board_init_f(ulong dummy)
panic("DRAM init failed: %d\n", ret);
}
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();
}
spl_enable_cache();
setup_qos();