Documentation/devicetree/bindings/mmc/mtk-sd.txt

   1 * MTK MMC controller
   2
   3 The MTK  MSDC can act as a MMC controller
   4 to support MMC, SD, and SDIO types of memory cards.
   5
   6 This file documents differences between the core properties in mmc.txt
   7 and the properties used by the msdc driver.
   8
   9 Required properties:
  10 - compatible: Should be "mediatek,mt8173-mmc","mediatek,mt8135-mmc"
  11 - interrupts: Should contain MSDC interrupt number
  12 - clocks: MSDC source clock, HCLK
  13 - clock-names: "source", "hclk"
  14 - pinctrl-names: should be "default", "state_uhs"
  15 - pinctrl-0: should contain default/high speed pin ctrl
  16 - pinctrl-1: should contain uhs mode pin ctrl
  17 - vmmc-supply: power to the Core
  18 - vqmmc-supply: power to the IO
  19
  20 Examples:
  21 mmc0: mmc@11230000 {
  22         compatible = "mediatek,mt8173-mmc", "mediatek,mt8135-mmc";
  23         reg = <0 0x11230000 0 0x108>;
  24         interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_LOW>;
  25         vmmc-supply = <&mt6397_vemc_3v3_reg>;
  26         vqmmc-supply = <&mt6397_vio18_reg>;
  27         clocks = <&pericfg CLK_PERI_MSDC30_0>, <&topckgen CLK_TOP_MSDC50_0_H_SEL>;
  28         clock-names = "source", "hclk";
  29         pinctrl-names = "default", "state_uhs";
  30         pinctrl-0 = <&mmc0_pins_default>;
  31         pinctrl-1 = <&mmc0_pins_uhs>;
  32 };