Re: [PATCH v2] ata: pata_at91.c bugfix for high master clock
From: Sergei Shtylyov
Date: Sun Dec 12 2010 - 08:50:28 EST
Hello.
On 11-12-2010 23:37, Igor Plyatov wrote:
The AT91SAM9 microcontrollers with master clock higher then 105 MHz
and PIO0, have overflow of the NCS_RD_PULSE value in the MSB. This
lead to "NCS_RD_PULSE" pulse longer then "NRD_CYCLE" pulse and driver
does not detect ATA device.
Signed-off-by: Igor Plyatov<plyatov@xxxxxxxxx>
[...]
diff --git a/drivers/ata/pata_at91.c b/drivers/ata/pata_at91.c
index 0da0dcc..a462405 100644
--- a/drivers/ata/pata_at91.c
+++ b/drivers/ata/pata_at91.c
[...]
@@ -50,7 +52,7 @@ struct at91_ide_info {
};
static const struct ata_timing initial_timing =
- {XFER_PIO_0, 70, 290, 240, 600, 165, 150, 600, 0};
+ {XFER_PIO_0, 70, 290, 240, 600, 165, 150, 0, 600, 0};
BTW, you haven't described this in the changelog...
WBR, Sergei
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/