diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 93450ee3..3a8a1ffc 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -34,7 +34,10 @@
  */
 void xhci_flush_cache(uintptr_t addr, u32 len)
 {
-	BUG_ON((void *)addr == NULL || len == 0);
+	// th1520 will load fw_dymaic.bin into 0x0
+	// so disable it
+	// load usb 0:2 0x0 fw_dynamic.bin
+	//BUG_ON((void *)addr == NULL || len == 0);
 
 	flush_dcache_range(addr & ~(CACHELINE_SIZE - 1),
 				ALIGN(addr + len, CACHELINE_SIZE));
@@ -49,7 +52,10 @@ void xhci_flush_cache(uintptr_t addr, u32 len)
  */
 void xhci_inval_cache(uintptr_t addr, u32 len)
 {
-	BUG_ON((void *)addr == NULL || len == 0);
+	// th1520 will load fw_dymaic.bin into 0x0
+	// so disable it
+	// load usb 0:2 0x0 fw_dynamic.bin
+	//BUG_ON((void *)addr == NULL || len == 0);
 
 	invalidate_dcache_range(addr & ~(CACHELINE_SIZE - 1),
 				ALIGN(addr + len, CACHELINE_SIZE));