1 --- a/board/mediatek/mt7986/mt7986_rfb.c
2 +++ b/board/mediatek/mt7986/mt7986_rfb.c
11 #include <asm/global_data.h>
12 +#include <linux/delay.h>
14 +#ifndef CONFIG_RESET_BUTTON_LABEL
15 +#define CONFIG_RESET_BUTTON_LABEL "reset"
19 #include <linux/mtd/mtd.h>
20 @@ -24,7 +31,22 @@ int board_init(void)
22 int board_late_init(void)
24 - gd->env_valid = 1; //to load environment variable from persistent store
25 + struct udevice *dev;
27 + gd->env_valid = ENV_VALID;
28 + if (!button_get_by_label(CONFIG_RESET_BUTTON_LABEL, &dev)) {
29 + puts("reset button found\n");
30 +#ifdef CONFIG_RESET_BUTTON_SETTLE_DELAY
31 + if (CONFIG_RESET_BUTTON_SETTLE_DELAY > 0) {
32 + button_get_state(dev);
33 + mdelay(CONFIG_RESET_BUTTON_SETTLE_DELAY);
36 + if (button_get_state(dev) == BUTTON_ON) {
37 + puts("button pushed, resetting environment\n");
38 + gd->env_valid = ENV_INVALID;