openstlinux/uboot-st
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix: move watchdog feed more early

Browse Source
This commit is contained in:
Steve Chen
2025-03-05 20:38:10 +08:00
parent 6067b3247b
commit e84f67ebb4
1 changed files with 52 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
board/st/stm32mp1/stm32mp1.c
View File

@ -849,6 +849,9 @@ int board_init(void)
struct udevice *dev;
int ret;
hw_watchdog_init();
hw_watchdog_reset();
/* probe RCC to avoid circular access with usbphyc probe as clk provider */
if (IS_ENABLED(CONFIG_CLK_STM32MP13)) {
ret = uclass_get_device_by_driver(UCLASS_CLK, DM_DRIVER_GET(stm32mp1_clock), &dev);
@ -874,6 +877,55 @@ int board_init(void)
return 0;
}
// #ifdef CONFIG_HW_WATCHDOG
static struct gpio_desc watchdog_en, watchdog_wdi;
static bool hw_watchdog_init_done = false;
void hw_watchdog_init(void)
{
ofnode node;
struct udevice *dev;
if (hw_watchdog_init_done)
return;
node = ofnode_path("/config");
if (!ofnode_valid(node)) {
log_err("no /config node?\n");
return;
}
if (gpio_request_by_name_nodev(node, "watchdog-gpios", 0,
&watchdog_en, GPIOD_IS_OUT)) {
log_warning("could not find a /config/watchdog-gpios\n");
} else {
dm_gpio_set_value(&watchdog_en, 0);
}
if (gpio_request_by_name_nodev(node, "watchdog-wdi-gpios", 0,
&watchdog_wdi, GPIOD_IS_OUT)) {
log_warning("could not find a /config/watchdog-wdi-gpios\n");
} else {
dm_gpio_set_value(&watchdog_wdi, 0);
}
hw_watchdog_init_done = true;
hw_watchdog_reset();
}
void hw_watchdog_reset(void)
{
if (!hw_watchdog_init_done)
return;
dm_gpio_set_value(&watchdog_wdi, 0);
udelay(5);
dm_gpio_set_value(&watchdog_wdi, 1);
}
// #endif
int board_late_init(void)
{
@ -947,25 +999,6 @@ int board_late_init(void)
return;
}
if (gpio_request_by_name_nodev(node, "watchdog-gpios", 0,
&watchdog_en, GPIOD_IS_OUT)) {
log_warning("could not find a /config/watchdog-gpios\n");
} else {
log_warning("enable gpio watchdog\n");
dm_gpio_set_value(&watchdog_en, 0);
//dm_gpio_free(NULL, &gpio);
}
if (gpio_request_by_name_nodev(node, "watchdog-wdi-gpios", 0,
&watchdog_wdi, GPIOD_IS_OUT)) {
log_warning("could not find a /config/watchdog-wdi-gpios\n");
} else {
log_warning("feed gpio watchdog\n");
dm_gpio_set_value(&watchdog_wdi, 0);
udelay(5);
dm_gpio_set_value(&watchdog_wdi, 1);
}
node = ofnode_path("/soc/ethernet@5800a000");
if (!ofnode_valid(node)) {
pr_err("%s: no ethernet ?\n", __func__);