Patchwork [U-Boot,04/18] Blackfin: dont reset SWRST on newer bf526 parts

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Submitter Mike Frysinger
Date June 28, 2011, 7:36 p.m.
Message ID <1309289787-7846-5-git-send-email-vapier@gentoo.org>
Download mbox | patch
Permalink /patch/102460/
State Rejected
Delegated to: Mike Frysinger
Headers show

Comments

Mike Frysinger - June 28, 2011, 7:36 p.m.
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@gentoo.org>
---
 arch/blackfin/cpu/reset.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

Patch

diff --git a/arch/blackfin/cpu/reset.c b/arch/blackfin/cpu/reset.c
index e23dcc7..5567cd0 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__ < 2 && bfin_revid() < 2)
+		bfin_read_SWRST();
 #endif
 
 	/* Wait for the SWRST write to complete.  Cannot rely on SSYNC