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[U-Boot,RESEND,v3,12/13] arm: mvebu: Add d-cache invalidate before enabling the d-cache

Message ID 1429936196-13647-13-git-send-email-sr@denx.de
State Accepted
Delegated to: Stefan Roese
Headers show

Commit Message

Stefan Roese April 25, 2015, 4:29 a.m. UTC 
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>
---

Changes in v3: None
Changes in v2: None

 arch/arm/mach-mvebu/cpu.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/arch/arm/mach-mvebu/cpu.c b/arch/arm/mach-mvebu/cpu.c
index 8058fad..04681fc 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();
 }