Cituji Stanislaw Gruszka <stf_xl@xxxxx>:
On Wed, Nov 24, 2010 at 10:36:37AM +0100, Radovan VÃpenÃk wrote:
at91_ide_probe chipselect 4 irq 132 res 50000000
apply_timings t0=600 t1=70 t2=290 t6z=30
apply_timings mck_hz=99328000
apply_timings cycle=60 setup=7 pulse=29 data_float=3
Probing IDE interface ide0...
probing for hda: present=0, media=32, probetype=ATA
probing for hda: present=0, media=32, probetype=ATAPI
probing for hdb: present=0, media=32, probetype=ATA
probing for hdb: present=0, media=32, probetype=ATAPI
ide0 at 0xc4866000-0xc4866007,0xc486e006 on irq 132
We do not detect any IDE device, registers do not contain status/data
that IDE layer expect. As far only two possible reasons of that
problem come in mind:
- board specific code does not reset CF device (with proper
reset duration?). This is expected, there is rst_pin in
struct at91_cf_data but driver does not use it
- CF 9 pin (ATA SEL) is not grounded or set to 0 if connected
to controller (also in board specific initialization code)
To debug problem further, you can add your own code at the end of
at91_ide_probe(), which read/write IDE register to see if device
react properly and give some sensible status values.
Stanislaw
Seems problem is really on reset pin, i have analysed using
oscilloscope and on reset pin is still in logical "1", without change
during module loading. I will try to find out why is this happening.
Radovan
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