Stephen,
On Thu, 15 Oct 2015 11:09:03 -0700, Stephen Boyd wrote:
> Good catch! Except we don't need to do all that complicated
> stuff, right? We can use of_clk_get_from_provider() instead.
>
> ---8<----
> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> index 16b86a551bcb..648fb2c8904d 100644
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -3088,7 +3088,7 @@ const char *of_clk_get_parent_name(struct device_node
> *np, int index)
> * registered, we return the node name as the name of
> * the clock as long as #clock-cells = 0.
> */
> - clk = of_clk_get(np, index);
> + clk = of_clk_get_from_provider(clkspec);
> if (IS_ERR(clk)) {
> if (clkspec.args_count == 0)
> clk_name = clkspec.np->name;
I'll re-test this solution tomorrow, just to make sure.
> > So, what is the plan now ?
> >
> > - Have the minimal fix in drivers/clk/mvebu/clk-cpu.c for 4.3.
>
> Yep.
I see in your other e-mail that you already applied the fix, so good.
> > - Have the patch improving the of_clk_get_parent_name() logic merged
> > in 4.4 + a revert of the fix done for 4.3 in clk-cpu.c. Unless maybe
> > you don't want to clutter the core of the clock framework to handle
> > this specific case?
>
> Assuming that the patch doesn't cause problems for other
> platforms, then I think we'll go with this approach.
Ok. Can you send the patch "properly" so that I can give a formal
Tested-by ?
> > - Add the clock-output-names to the Marvell EBU Device Tree files, so
> > that in a couple of kernel releases we can remove the hacks and rely
> > on the generic logic of of_clk_get_parent_name().
> >
>
> Naw, let's not change any DT files for this.
ACK.
Thanks for your help!
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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