Hi,

I am also trying to use Xilinx GPIO driver on my board but I encounter some problems. I thought they will be resolved with this information but it doesn't.

I use GPIO driver as built-in but during kernel boot but I don't see log about it contrary to Xemac driver for instance. First I wanted to create my gpio driver normally without using Xilinx one, with ioremap and writel/readl but I didn't write anything in the register, I don't know why. Then I tried to use Xilinx GPIO driver but I don't know why I don't hit xgpio_probe, xgpio_init returns 0 so it's OK.

Do you have any idea ?

Thanks

Ludovic Desroches

arch/ppc/syslib/virtex_devices.c:

> // 0 is LEDS_4BIT, 1 is LEDS_POSITIONS, 2 is PUSH_BUTTONS_POSITION
> #define XPAR_GPIO(num) { \
> .name = "xilinx_gpio", \
> .id = num, \
> .num_resources = 2, \
That was a 2.
If anybody wants to make a patch out of those few lines of code, I couldn't
figure out how to do this with git... But I will use a more general GPIO
approach as soon as I can put my hands on our custom card.

> .resource = (struct resource[]) { \
> { \
> .start = XPAR_GPIO_##num##_BASEADDR, \
> .end = XPAR_GPIO_##num##_HIGHADDR, \
> .flags = IORESOURCE_MEM, \
> }, \
> { \
> .start = XPAR_INTC_0_GPIO_##num##_VEC_ID, \
> .flags = IORESOURCE_IRQ, \
> }, \
> }, \
> }
> [...]
> /* GPIO instances */
> #if defined(XPAR_GPIO_0_BASEADDR)
> XPAR_GPIO(0),
> #endif
> #if defined(XPAR_GPIO_1_BASEADDR)
> XPAR_GPIO(1),
> #endif
> #if defined(XPAR_GPIO_2_BASEADDR)
> XPAR_GPIO(2),
> #endif