Add "cmd_clock=" parameter for specifying VLB or PCI bus clock frequency
(in MHz).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/pci/cmd640.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
Index: b/drivers/ide/pci/cmd640.c
===================================================================
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -157,6 +157,8 @@ static int cmd640_vlb;
#define DRWTIM23 0x58
#define BRST 0x59
+static int cmd_clock;
+
/*
* Registers and masks for easy access by drive index:
*/
@@ -552,7 +554,7 @@ static void cmd640_set_mode(ide_drive_t
{
int setup_time, active_time, recovery_time, clock_time;
u8 setup_count, active_count, recovery_count, recovery_count2, cycle_count;
- int bus_speed = system_bus_clock();
+ int bus_speed = cmd_clock ? cmd_clock : system_bus_clock();
if (pio_mode > 5)
pio_mode = 5;
@@ -904,4 +906,7 @@ static int __init cmd640x_init(void)
module_param_named(probe_vlb, cmd640_vlb, bool, 0);
MODULE_PARM_DESC(probe_vlb, "probe for VLB version of CMD640 chipset");
+module_param(cmd_clock, int, 0);
+MODULE_PARM_DESC(cmd_clock, "VLB or PCI bus clock frequency (in MHz)");
+
module_init(cmd640x_init);
--
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