From 60b75324ea6fb0a72786f3ec36c1057f39ebe2e6 Mon Sep 17 00:00:00 2001
From: Stefan Roese <sr@denx.de>
Date: Sat, 25 Apr 2015 06:29:55 +0200
Subject: [PATCH] arm: mvebu: Add d-cache invalidate before enabling the
d-cache
This solves some RX problems that have been seen, when using the
mvneta ethernet driver. The cache needs to be reset into a "clean"
state before using it.
Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Kevin Smith <kevin.smith@elecsyscorp.com>
Tested-by: Dirk Eibach <dirk.eibach@gdsys.cc>
---
arch/arm/mach-mvebu/cpu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/mach-mvebu/cpu.c b/arch/arm/mach-mvebu/cpu.c
index 8058fadb22b..04681fc5a01 100644
--- a/arch/arm/mach-mvebu/cpu.c
+++ b/arch/arm/mach-mvebu/cpu.c
@@ -240,6 +240,9 @@ int cpu_eth_init(bd_t *bis)
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
+ /* Avoid problem with e.g. neta ethernet driver */
+ invalidate_dcache_all();
+
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
}
--
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