Re: [PATCH] clk: Make of_clk_get_parent_name() robust with #clock-cells = 1
From: Geert Uytterhoeven
Date: Fri Oct 16 2015 - 09:02:42 EST
Hi Mike,
On Fri, Oct 16, 2015 at 2:55 PM, Michael Turquette
<mturquette@xxxxxxxxxxxx> wrote:
> Quoting Stephen Boyd (2015-10-15 16:19:38)
>> If a clock provider has #clock-cells = 1 and we call
>> of_clk_get_parent_name() on it we may end up returning the name
>> of the provider node if the provider doesn't have a
>> clock-output-names property. This doesn't make sense, especially
>> when you consider that calling of_clk_get_parent_name() on such a
>> node with different indices will return the same name each time.
>>
>> Let's try getting the clock from the framework via of_clk_get()
>> instead, and only fallback to the node name if we have a provider
>> with #clock-cells = 0. This way, we can't hand out the same name
>> for different clocks when we don't actually know their names.
>>
>> Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
>
> Geert,
>
> Does this approach fix the issues you had removing clock-output-names
> from your clock provider DTS?
I already saw this patch in clk-next, and I think it would fix that issue.
However, we're no longer seeing the issue, as we no longer have
fixed-factor-clocks in DT.
Thanks!
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
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