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mmc: dt-bindings: add Mediatek MMC bindings 

Document the device-tree binding of Mediatek MMC host

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Chaotian Jing 2015-06-15 19:20:47 +08:00 committed by Ulf Hansson
parent 29535f7b79
commit 4c31d50d3e
1 changed files with 32 additions and 0 deletions
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Documentation/devicetree/bindings/mmc/mtk-sd.txt Normal file
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* 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, HCLK
- clock-names: "source", "hclk"
- pinctrl-names: should be "default", "state_uhs"
- pinctrl-0: should contain default/high speed pin ctrl
- pinctrl-1: should contain uhs mode pin ctrl
- vmmc-supply: power to the Core
- vqmmc-supply: power to the IO
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>;
vqmmc-supply = <&mt6397_vio18_reg>;
clocks = <&pericfg CLK_PERI_MSDC30_0>, <&topckgen CLK_TOP_MSDC50_0_H_SEL>;
clock-names = "source", "hclk";
pinctrl-names = "default", "state_uhs";
pinctrl-0 = <&mmc0_pins_default>;
pinctrl-1 = <&mmc0_pins_uhs>;
};