1* MTK MMC controller
2
3The MTK  MSDC can act as a MMC controller
4to support MMC, SD, and SDIO types of memory cards.
5
6This file documents differences between the core properties in mmc.txt
7and the properties used by the msdc driver.
8
9Required 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
20Optional properties:
21- assigned-clocks: PLL of the source clock
22- assigned-clock-parents: parent of source clock, used for HS400 mode to get 400Mhz source clock
23- hs400-ds-delay: HS400 DS delay setting
24
25Examples:
26mmc0: mmc@11230000 {
27	compatible = "mediatek,mt8173-mmc", "mediatek,mt8135-mmc";
28	reg = <0 0x11230000 0 0x108>;
29	interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_LOW>;
30	vmmc-supply = <&mt6397_vemc_3v3_reg>;
31	vqmmc-supply = <&mt6397_vio18_reg>;
32	clocks = <&pericfg CLK_PERI_MSDC30_0>,
33	         <&topckgen CLK_TOP_MSDC50_0_H_SEL>;
34	clock-names = "source", "hclk";
35	pinctrl-names = "default", "state_uhs";
36	pinctrl-0 = <&mmc0_pins_default>;
37	pinctrl-1 = <&mmc0_pins_uhs>;
38	assigned-clocks = <&topckgen CLK_TOP_MSDC50_0_SEL>;
39	assigned-clock-parents = <&topckgen CLK_TOP_MSDCPLL_D2>;
40	hs400-ds-delay = <0x14015>;
41};
42