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--- a/board/mediatek/mt7622/mt7622_rfb.c
+++ b/board/mediatek/mt7622/mt7622_rfb.c
@@ -6,9 +6,16 @@
#include <common.h>
#include <config.h>
+#include <dm.h>
+#include <button.h>
#include <env.h>
#include <init.h>
#include <asm/global_data.h>
+#include <linux/delay.h>
+
+#ifndef CONFIG_RESET_BUTTON_LABEL
+#define CONFIG_RESET_BUTTON_LABEL "reset"
+#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -20,7 +27,19 @@ int board_init(void)
int board_late_init(void)
{
- gd->env_valid = 1; //to load environment variable from persistent store
+ struct udevice *dev;
+ int ret;
+
+ ret = !!button_get_by_label(CONFIG_RESET_BUTTON_LABEL, &dev);
+
+ if (!ret) {
+#ifdef CONFIG_RESET_BUTTON_SETTLE_DELAY
+ udelay(1000 * CONFIG_RESET_BUTTON_SETTLE_DELAY);
+#endif
+ ret = !button_get_state(dev);
+ }
+
+ gd->env_valid = ret; //to load environment variable from persistent store
env_relocate();
return 0;
}
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