diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 3c40b13..a990e85 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -39,6 +39,7 @@
 
 static void ath79_restart(char *command)
 {
+	dma_cache_wback_inv(0, ~0);
 	ath79_device_reset_set(AR71XX_RESET_FULL_CHIP);
 	for (;;)
 		if (cpu_wait)