From 9810263afec5ac5f38f92963bb3b6d799e4331d0 Mon Sep 17 00:00:00 2001
From: Dave Liu <r63238@freescale.com>
Date: Tue, 3 Jun 2008 17:38:19 +0800
Subject: [PATCH] sata: wait for device updating signature to host
The driver need wait for the device updating signature to host.
If we don't wait for it, the driver can not detect the device(disk)
when the system powers up.
Signed-off-by: Dave Liu <daveliu@freescale.com>
---
drivers/block/fsl_sata.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/block/fsl_sata.c b/drivers/block/fsl_sata.c
index d14f5bc6bf..d441a30ed5 100644
--- a/drivers/block/fsl_sata.c
+++ b/drivers/block/fsl_sata.c
@@ -248,6 +248,10 @@ int init_sata(int dev)
else
printf(" %s ", sata->name);
+ /* Wait PHY RDY signal changed for 500ms */
+ ata_wait_register(®->hstatus, HSTATUS_PHY_RDY,
+ HSTATUS_PHY_RDY, 500);
+
/* Check PHYRDY */
val32 = in_le32(®->hstatus);
if (val32 & HSTATUS_PHY_RDY) {
@@ -258,6 +262,10 @@ int init_sata(int dev)
return -1;
}
+ /* Wait for signature updated, which is 1st D2H */
+ ata_wait_register(®->hstatus, HSTATUS_SIGNATURE,
+ HSTATUS_SIGNATURE, 10000);
+
if (val32 & HSTATUS_SIGNATURE) {
sig = in_le32(®->sig);
debug("Signature updated, the sig =%08x\n\r", sig);
--
2.39.5