| Message ID | 1426562035-16709-2-git-send-email-chaotian.jing@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Chaotian, On Tue, Mar 17, 2015 at 11:13:51AM +0800, Chaotian Jing wrote: > Document the device-tree binding of Mediatek MMC host > > Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> > --- > Documentation/devicetree/bindings/mmc/mtk-sd.txt | 33 ++++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mmc/mtk-sd.txt > > diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt > new file mode 100644 > index 0000000..ac43f77 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt > @@ -0,0 +1,33 @@ > +* MTK MMC controller > + > +The MTK MSDC can act as a MMC controller > +to support MMC, SD, and SDIO types of memory cards. > + > +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". > +- interrupts: Should contain MSDC interrupt number > +- clocks: MSDC source clock > +- clock-names: "source" When I remove the clk_ignore_unused from the command line SD/MMC stops working on the MT8173. This is because msdc50_0_h_sel is disabled, when I enable this clock SD/MMC works again. This clock should probably be added here and handled appropriatly in the driver. Sascha
diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt new file mode 100644 index 0000000..ac43f77 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt @@ -0,0 +1,33 @@ +* MTK MMC controller + +The MTK MSDC can act as a MMC controller +to support MMC, SD, and SDIO types of memory cards. + +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". +- interrupts: Should contain MSDC interrupt number +- clocks: MSDC source clock +- clock-names: "source" +- pinctrl-names: should be "default", "state_uhs" +- pinctrl-0: should contain default/high speed pin ctrl +- pinctrl-1: should contain uhs mode pin ctrl + +Optional properties: +- vmmc-supply: power to the Core +- vqmmc-supply: power to the IO(for SD/SDIO) + +Examples: +mmc0: mmc@11230000 { + compatible = "mediatek,mt8173-mmc","mediatek,mt8135-mmc"; + reg = <0 0x11230000 0 0x108>; + interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_LOW>; + vmmc-supply = <&mt6397_vemc_3v3_reg>; + clocks = <&pericfg PERI_MSDC20_1_CK>; + clock-names = "source"; + pinctrl-names = "default", "state_uhs"; + pinctrl-0 = <&mmc0_pins_default>; + pinctrl-1 = <&mmc0_pins_uhs>; +};
Document the device-tree binding of Mediatek MMC host Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> --- Documentation/devicetree/bindings/mmc/mtk-sd.txt | 33 ++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/mtk-sd.txt