diff options
| author | Sergei Shtylyov <sshtylyov@ru.mvista.com> | 2007-08-10 20:58:46 +0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-08-15 12:19:07 +0400 |
| commit | d44a65f7bb0dae0bcc78de336b55a75b30ec2d2a (patch) | |
| tree | 22c2eb369022138b5da775c791e5126c7068d8b0 /drivers/ata/pata_hpt37x.c | |
| parent | be456b77ffbd3983b5da8eff49a70a701333f68b (diff) | |
| download | linux-d44a65f7bb0dae0bcc78de336b55a75b30ec2d2a.tar.xz | |
pata_hpt37x: actually clock HPT374 with 50 MHz DPLL (take 2)
The DPLL tuning code always set up it for 66 MHz due to wrong UltraDMA mask
including mode 5 used to check for the necessity of 66 MHz clocking -- this
caused 66 MHz clock to be used for HPT374 chip that does not tolerate it.
While fixing this, also remove PLL mode from the TODO list -- I don't think
it's still a relevant item.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/pata_hpt37x.c')
| -rw-r--r-- | drivers/ata/pata_hpt37x.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c index 84d9c5568567..96bbe7c39bee 100644 --- a/drivers/ata/pata_hpt37x.c +++ b/drivers/ata/pata_hpt37x.c @@ -8,12 +8,10 @@ * Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org> * Portions Copyright (C) 2001 Sun Microsystems, Inc. * Portions Copyright (C) 2003 Red Hat Inc - * Portions Copyright (C) 2005-2006 MontaVista Software, Inc. + * Portions Copyright (C) 2005-2007 MontaVista Software, Inc. * * TODO - * PLL mode - * Look into engine reset on timeout errors. Should not be - * required. + * Look into engine reset on timeout errors. Should not be required. */ #include <linux/kernel.h> @@ -26,7 +24,7 @@ #include <linux/libata.h> #define DRV_NAME "pata_hpt37x" -#define DRV_VERSION "0.6.7" +#define DRV_VERSION "0.6.8" struct hpt_clock { u8 xfer_speed; @@ -1092,9 +1090,7 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id) int dpll, adjust; /* Compute DPLL */ - dpll = 2; - if (port->udma_mask & 0xE0) - dpll = 3; + dpll = (port->udma_mask & 0xC0) ? 3 : 2; f_low = (MHz[clock_slot] * 48) / MHz[dpll]; f_high = f_low + 2; |