On Wed, Oct 11, 2017 at 10:41:25AM +0800, Chaotian Jing wrote: > Change the comptiable for support of multi-platform > Make compatible explicit > Add description for reg > Add description for source_cg > Add description for mediatek,latch-ck > Note that source_cg and mediatek,latch-ck are optional for some projects, > eg, MT2701 do not have source_cg, and MT2712 do not need > mediatek,latch-ck > > Signed-off-by: Chaotian Jing <chaotian.jing@xxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/mmc/mtk-sd.txt | 16 +++++++++++++--- > 1 file changed, 13 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt > index 4182ea3..2bb585b 100644 > --- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt > +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt > @@ -7,10 +7,18 @@ This file documents differences between the core properties in mmc.txt > and the properties used by the msdc driver. > > Required properties: > -- compatible: Should be "mediatek,mt8173-mmc","mediatek,mt8135-mmc" > +- compatible: value should be either of the following. > + "mediatek,mt8135-mmc": for mmc host ip compatible with mt8135 > + "mediatek,mt8173-mmc": for mmc host ip compatible with mt8173 > + "mediatek,mt2701-mmc": for mmc host ip compatible with mt2701 > + "mediatek,mt2712-mmc": for mmc host ip compatible with mt2712 > +- reg: physical base address of the controller and length > - interrupts: Should contain MSDC interrupt number > -- clocks: MSDC source clock, HCLK > -- clock-names: "source", "hclk" > +- clocks: Should contain phandle for the clock feeding the MMC controller > +- clock-names: Should contain the following: > + "source" - source clock (required) > + "hclk" - HCLK which used for host (required) > + "source_cg" - independent source clock gate (required for MT2712) > - pinctrl-names: should be "default", "state_uhs" > - pinctrl-0: should contain default/high speed pin ctrl > - pinctrl-1: should contain uhs mode pin ctrl > @@ -30,6 +38,8 @@ Optional properties: > - mediatek,hs400-cmd-resp-sel-rising: HS400 command response sample selection > If present,HS400 command responses are sampled on rising edges. > If not present,HS400 command responses are sampled on falling edges. > +- mediatek,latch-ck: Some SoCs do not support enhance_rx, need set correct latch-ck to avoid data crc > + error caused by stop clock(fifo full) What values are supported? What's the default if not present. Be clear what compatible strings this property applies to or doesn't apply to. Rob -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
