From: Frank Li <Frank.Li@freescale.com>
Date: Wed, 13 Nov 2013 16:58:46 +0000 (+0800)
Subject: imx6: fix random hang when download by usb
X-Git-Tag: v2014.04~100^2~16
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ebaf6b26bc12bd470188f3149a75397f112ab09d;p=platform%2Fkernel%2Fu-boot.git

imx6: fix random hang when download by usb

ROM did not invalidate L1 cache when download by usb
Need invalidate L1 cache before enable cache

Signed-off-by: Huang yongcai <b20788@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
---

diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index a390296..335706a 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -150,6 +150,8 @@ int arch_cpu_init(void)
 #ifndef CONFIG_SYS_DCACHE_OFF
 void enable_caches(void)
 {
+	/* Avoid random hang when download by usb */
+	invalidate_dcache_all();
 	/* Enable D-cache. I-cache is already enabled in start.S */
 	dcache_enable();
 }