Messages in this thread | | | Subject | Re: [PATCH 5/5] arm64: dts: exynos: Add internal eMMC support to jackpotlte | From | David Virag <> | Date | Fri, 03 Jun 2022 00:18:51 +0200 |
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On Thu, 2022-06-02 at 14:01 +0200, Krzysztof Kozlowski wrote: > On 02/06/2022 01:37, David Virag wrote: > > Add the nodes relevant to provide clocks for Exynos7885 eMMC and to > > support eMMC. eMMC is the internal storage used in the Samsung > > Galaxy A8 > > (2018) (jackpotlte), and all other known devices using the > > Exynos7885 > > SoC. > > > > Signed-off-by: David Virag <virag.david003@gmail.com> > > --- > > .../boot/dts/exynos/exynos7885-jackpotlte.dts | 20 ++++++++++++ > > arch/arm64/boot/dts/exynos/exynos7885.dtsi | 32 > > +++++++++++++++++++ > > 2 files changed, 52 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts > > b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts > > index 4cf9aa25f618..5db9a81ac7bb 100644 > > --- a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts > > +++ b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts > > @@ -60,6 +60,26 @@ power-key { > > }; > > }; > > > > +&mmc_0 { > > + status = "okay"; > > + mmc-hs200-1_8v; > > + mmc-hs400-1_8v; > > + cap-mmc-highspeed; > > + non-removable; > > + mmc-hs400-enhanced-strobe; > > + card-detect-delay = <200>; > > + clock-frequency = <800000000>; > > Is this real property for MMC? Neither mmc nor DW MSHC bindings > mention it.
It is, but I don't remember trying without it. Seems like it is not documented then. It is used in dw_mmc.c in the following places:
https://github.com/torvalds/linux/blob/master/drivers/mmc/host/dw_mmc.c#L3242-L3243
https://github.com/torvalds/linux/blob/master/drivers/mmc/host/dw_mmc.c#L3306-L3325
The Exynos850 device tree has the same property in it's mmc node.
> > Best regards, > Krzysztof
Best regards, David
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