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sata: wait for device updating signature to host

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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>
This commit is contained in:
Dave Liu 2008-06-03 17:38:19 +08:00 committed by Wolfgang Denk
parent 8b616edb11
commit 9810263afe
1 changed files with 8 additions and 0 deletions
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8
drivers/block/fsl_sata.c
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@ -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);