[BUG] GPIO: irq: no irq domain found for

[Jean-Christophe PLAGNIOL-VILLARD]

On 22:39 Tue 21 May     , Jean-Christophe PLAGNIOL-VILLARD wrote:
> Hi,
> 
> 	I'm currently adding the ks8851-ml support to a at91 board
> 
> 	On this board we use a gpio as interrupt but I found an issue
> 
> 	when populating the platfomr devices we try found the virq for the
> 	ks8851 but the irq domain is not yet present as the gpio driver (a
> 	platform device is not probed) so we get this
> 
> 	irq: no irq domain found for /ahb/apb/pinctrl at fffff400/gpio at fffffa00 !
> 
> 	if we use a gpio irq for a i2c or spi devices it will work as the spi
> 	bus will be populate after the gpio driver will be probed
> 
> 	Do you have any idea how can we delay the population of the
> 	ks8851 device? via -EPROBE_DEFER?

I continue to debug and found that to make it work we need to have a specific
driver init

we need before calling
	 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
to create all the irq domain

so we need to probe the gpio driver before, but as the gpio driver (on at91
the same driver do pintrl + gpio) is a platform_device, we need to call

of_platform_device_create_pdata(np, NULL, NULL, NULL);

on the gpio nodes and pinctrl

but as of_platform_populate & co does not check if a node is already handled
we need modify it to track it

Grant do you want to do this way or do you have something else in mind

Best Regards,
J.