[U-Boot] [PATCH v2] Blackfin: dont reset SWRST on newer bf526 parts

[Mike Frysinger]

The bug in the BF526 rom when doing a software reset exists only in older
silicon versions, so don't clear SWRST on newer parts.

Signed-off-by: Mike Frysinger <vapier at gentoo.org>
---
v2
	- skip 0.1 silicon as well since it seems to work

 arch/blackfin/cpu/reset.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/blackfin/cpu/reset.c b/arch/blackfin/cpu/reset.c
index e23dcc7..ff39035 100644
--- a/arch/blackfin/cpu/reset.c
+++ b/arch/blackfin/cpu/reset.c
@@ -51,7 +51,9 @@ static void bfin_reset(void)
 
 	/* The BF526 ROM will crash during reset */
 #if defined(__ADSPBF522__) || defined(__ADSPBF524__) || defined(__ADSPBF526__)
-	bfin_read_SWRST();
+	/* Seems to be fixed with newer parts though ... */
+	if (__SILICON_REVISION__ < 1 && bfin_revid() < 1)
+		bfin_read_SWRST();
 #endif
 
 	/* Wait for the SWRST write to complete.  Cannot rely on SSYNC
-- 
1.7.6