On Thu, Jan 26, 2017 at 11:22 AM, Marek Szyprowski
[off-list ref] wrote:

syscon_regmap_lookup_by_compatible() requires to have a compatible string
hardcoded in the client driver. This might be used, but will require to have
(and maintain) a duplicated list of PMU compatibles in pin control driver.
There is a little problem with exynos4212 and exynos4412, which have same
pinctrl compatible (samsung,exynos4x12-pinctrl), but separate PMU
compatibles

I actually used this approach with the ARM reference designs:
drivers/mtd/maps/physmap_of_versatile.c
drivers/video/fbdev/amba-clcd-versatile.c

It made sense to me, because for each compatible I anyways
needed the .data field to distinguish between the different
system controllers, because they are of course all slightly
idiomatic.

I guess in your case you can distinguish how to use the syscon
by the pinctrl compatible instead.

Oh well.

I guess I'm OK with this then. I'll try to pull it in and see what
happens.

Yours,
Linus Walleij