[PATCH] mmc: sdhci-of-arasan: Add support to request the "gate" clock

[Ulf Hansson]

On Mon, 27 Feb 2023 at 16:09, Michal Simek <michal.simek at amd.com> wrote:
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>
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> On 2/27/23 15:56, Ulf Hansson wrote:
> > CAUTION: This message has originated from an External Source. Please use proper judgment and caution when opening attachments, clicking links, or responding to this email.
> >
> >
> > On Thu, 23 Feb 2023 at 15:14, Swati Agarwal <swati.agarwal at amd.com> wrote:
> >>
> >> Add support to read the optional "gate" clock property and request the
> >> clock which will be used to ungate the DLL clock.
> >>
> >> For Xilinx platforms which has DLL module, dll clock must be
> >> ungated/enabled when SD controller operates at higher frequencies like 50
> >> MHz, 100 MHz and 200 MHz. This will be done by explicitly requesting gate
> >> clock from the driver.
> >
> > I guess we need to update the DT bindings too?
>
> DT binding has it already. It is just not used.
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml?h=v6.2#n110

Aha, thanks for the pointer!

Kind regards
Uffe