[U-Boot-Users] [PATCH] ata: fix the bug of signature updated

[Dave Liu]

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 power up.

Signed-off-by: Dave Liu <daveliu at freescale.com>
---
 drivers/block/fsl_sata.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/block/fsl_sata.c b/drivers/block/fsl_sata.c
index d14f5bc..d441a30 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(&reg->hstatus, HSTATUS_PHY_RDY,
+			  HSTATUS_PHY_RDY, 500);
+
 	/* Check PHYRDY */
 	val32 = in_le32(&reg->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(&reg->hstatus, HSTATUS_SIGNATURE,
+			  HSTATUS_SIGNATURE, 10000);
+
 	if (val32 & HSTATUS_SIGNATURE) {
 		sig = in_le32(&reg->sig);
 		debug("Signature updated, the sig =%08x\n\r", sig);
-- 
1.5.4