Re: [PATCHv2] drivers: bus: simple-pm-bus: Fix compatibility with simple-bus for auxdata

[Geert Uytterhoeven]

On Mon, Jan 18, 2021 at 8:33 AM Tony Lindgren <tony@xxxxxxxxxxx> wrote:
> After converting am335x to probe devices with simple-pm-bus I noticed
> that we are not passing auxdata for of_platform_populate() like we do
> with simple-bus.
>
> While device tree using SoCs should no longer need platform data, there
> are still quite a few drivers that still need it as can be seen with
> git grep OF_DEV_AUXDATA. We want to have simple-pm-bus be usable as a
> replacement for simple-bus also for cases where OF_DEV_AUXDATA is still
> needed.
>
> Let's fix the issue by passing auxdata as platform data to simple-pm-bus.
> That way the SoCs needing this can pass the auxdata with OF_DEV_AUXDATA.
> And let's pass the auxdata for omaps to fix the issue for am335x.
>
> As an alternative solution, adding simple-pm-bus handling directly to
> drivers/of/platform.c was considered, but we would still need simple-pm-bus
> device driver. So passing auxdata as platform data seems like the simplest
> solution.
>
> Fixes: 5a230524f879 ("ARM: dts: Use simple-pm-bus for genpd for am3 l4_wkup")
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Acked-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds