On 14 September 2017 at 04:10, Chaotian Jing <chaotian.jing@xxxxxxxxxxxx> wrote: > On Wed, 2017-09-13 at 09:10 -0500, Rob Herring wrote: >> On Tue, Sep 12, 2017 at 05:07:41PM +0800, Chaotian Jing wrote: >> > Change the comptiable for support of multi-platform >> > Add description for reg >> > Add description for source_cg >> > Add description for mediatek,latch-ck >> >> This is at least the 3rd patch with exactly the same vague subject. >> Please make the subject somewhat unique. >> > Thx, will change the subject at next version >> > >> > Signed-off-by: Chaotian Jing <chaotian.jing@xxxxxxxxxxxx> >> > --- >> > Documentation/devicetree/bindings/mmc/mtk-sd.txt | 13 ++++++++++--- >> > 1 file changed, 10 insertions(+), 3 deletions(-) >> > >> > diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt >> > index 4182ea3..405cd06 100644 >> > --- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt >> > +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt >> > @@ -7,10 +7,15 @@ 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: MSDC source clock, HCLK, source_cg >> > +- clock-names: "source", "hclk", "source_cg" >> >> All chips support source_cg? That's not backwards compatible for >> existing compatible strings if the driver requires it. > Not all chips support source_cg, for chips which do not support > source_cg, no need source_cg here, and the driver will parse it > to know if current chip support it. In such case you must not add add a required binding for it. I think that is what Rob is trying to point out for you. [...] Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
