commit 4d9c188483f74849f53deabf304d8d2e8a9b5399
author Dave Liu <r63238@freescale.com> Tue Jun 03 17:38:19 2008 +0800
committer Wolfgang Denk <wd@denx.de> Mon Jun 30 22:13:47 2008 +0200
tree a7ae97193158e5a9d916141ac11ef1a3f9e5f1f9
parent 26136efebcc660ca5b7abb0637c4bfbbf66512b7

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

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 @@
 	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 @@
 		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);