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List:       u-boot
Subject:    [U-Boot] [PATCH 1/5] AHCI: Increase link timeout to 200ms
From:       Ian Campbell <ijc () hellion ! org ! uk>
Date:       2014-05-31 16:36:11
Message-ID: 1401554175-29599-1-git-send-email-ijc () hellion ! org ! uk
[Download RAW message or body]

In 73545f75b66d "ahci: wait longer for link" I increased the
timeout to 40ms based on the observed behaviour of a WD disk on a
Cubietruck. Since then Karsten Merker and myself have both
observed timeouts with HGST disks (Karsten on Cubietruck, me on
Cubieboard2). Increasing the timeout to ~175ms fixes this, so go
to 200ms for a bit of headroom.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: Karsten Merker <merker@debian.org>
---
 drivers/block/ahci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index c8f6573..4df8046 100644
--- a/drivers/block/ahci.c
+++ b/drivers/block/ahci.c
@@ -41,7 +41,7 @@ u16 *ataid[AHCI_MAX_PORTS];
 #define WAIT_MS_SPINUP	20000
 #define WAIT_MS_DATAIO	5000
 #define WAIT_MS_FLUSH	5000
-#define WAIT_MS_LINKUP	40
+#define WAIT_MS_LINKUP	200
 
 static inline u32 ahci_port_base(u32 base, u32 port)
 {
-- 
1.9.0

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