X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Fmips%2Fmach-mt7620%2Fcpu.c;h=fcd0484a6d871685a0e455ecdbbf3687f37c0022;hb=c9baea6d0e96eb4bf55061d516e91e22236ed198;hp=87cc973b756ea712f03d814c6428a4552ff39f4a;hpb=430c166bcedd22e0ce93ce298747275f814b172f;p=oweals%2Fu-boot.git

diff --git a/arch/mips/mach-mt7620/cpu.c b/arch/mips/mach-mt7620/cpu.c
index 87cc973b75..fcd0484a6d 100644
--- a/arch/mips/mach-mt7620/cpu.c
+++ b/arch/mips/mach-mt7620/cpu.c
@@ -69,41 +69,17 @@ int print_cpuinfo(void)
 	return 0;
 }
 
-#ifdef CONFIG_WATCHDOG
-static struct udevice *watchdog_dev;
-
-/* Called by macro WATCHDOG_RESET */
-void watchdog_reset(void)
-{
-	static ulong next_reset;
-	ulong now;
-
-	if (!watchdog_dev)
-		return;
-
-	now = get_timer(0);
-
-	/* Do not reset the watchdog too often */
-	if (now > next_reset) {
-		next_reset = now + 1000;	/* reset every 1000ms */
-		wdt_reset(watchdog_dev);
-	}
-}
-
 int arch_misc_init(void)
 {
-	/* Init watchdog */
-	if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) {
-		debug("Watchdog: Not found by seq!\n");
-		if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
-			puts("Watchdog: Not found!\n");
-			return 0;
-		}
-	}
-
-	wdt_start(watchdog_dev, 60000, 0);	/* 60 seconds */
-	printf("Watchdog: Started\n");
+	/*
+	 * It has been noticed, that sometimes the d-cache is not in a
+	 * "clean-state" when U-Boot is running on MT7688. This was
+	 * detected when using the ethernet driver (which uses d-cache)
+	 * and a TFTP command does not complete. Flushing the complete
+	 * d-cache (again?) here seems to fix this issue.
+	 */
+	flush_dcache_range(gd->bd->bi_memstart,
+			   gd->bd->bi_memstart + gd->ram_size - 1);
 
 	return 0;
 }
-#endif