diff options
| author | Rob Herring <rob.herring@calxeda.com> | 2012-06-25 16:19:28 -0500 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2012-12-06 13:51:50 -0700 |
| commit | 90d740fc77c79b3ca594f73e3c403e89c158f3d5 (patch) | |
| tree | f809661724cf5658b4da579ad76a66ff4c979963 | |
| parent | 16ac3158d40f5d682f3407df6a8702e0bb6e1cac (diff) | |
ahci: set udma mode to 5 to fix some 1.5Gbps drives
Some SATA 1.5G drives don't work with UDMA mode 6, so use mode 5 instead.
As this is SATA, the UDMA mode doesn't really matter.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
| -rw-r--r-- | drivers/block/ahci.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c index 8c785ae92..9b6d8c5d8 100644 --- a/drivers/block/ahci.c +++ b/drivers/block/ahci.c @@ -918,7 +918,8 @@ int ahci_init(u32 base) | ATA_FLAG_PIO_DMA | ATA_FLAG_NO_ATAPI; probe_ent->pio_mask = 0x1f; - probe_ent->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */ + probe_ent->udma_mask = 0x3f; /* Fixme,assume to support up to UDMA5 + * as some drives don't support UDMA6 */ probe_ent->mmio_base = base; |