On Thu, Nov 25, 2010 at 09:53:19PM +0100, Radovan Vapeník wrote: > >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. I was unclear. Driver does not change reset pin. Reset need to be done in board initialization code. You have to add something like that #define RST_PIN AT91_PIN_PC5 at91_set_gpio_output(RST_PIN, 1); at91_set_gpio_value(RST_PIN,0); mdelay(2); at91_set_gpio_value(RST_PIN,1); in your arch/arm/mach-at91/board-NAME.c (I'm not sure if 2ms is correct IDE reset duration). Stanislaw -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
