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SubjectRe: [PATCH v2.1 07/11] mmc: sdhci-of-arasan: Add ability to export card clock
Am Mittwoch, 15. Juni 2016, 09:37:51 schrieb Douglas Anderson:
> Some SD/eMMC PHYs (like the PHY from Arasan that is designed to work
> with arasan,sdhci-5.1) need to know the card clock in order to function
> properly. Let's add the ability to expose this clock. Any PHY that
> needs to know the clock rate can add a reference and query the clock
> rate.
> At the moment we register a CLK_GET_RATE_NOCACHE clock that simply
> allows querying the clock. This allows us to be less intrusive with
> regards to the main SDHCI driver, which has complex logic for adjusting
> the SD clock. Right now we always fully power cycle the PHY when the
> clock changes and that gives the PHY a good chance to query our clock.
> Signed-off-by: Douglas Anderson <>

for me this looks very nice implementation-wise and I also didn't spot
glaring things, so
Reviewed-by: Heiko Stuebner <>

and as states in the original series, on a rk3399-evb
Tested-by: Heiko Stuebner <>

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