1* Atmel SDHCI controller 2 3This file documents the differences between the core properties in 4Documentation/devicetree/bindings/mmc/mmc.txt and the properties used by the 5sdhci-of-at91 driver. 6 7Required properties: 8- compatible: Must be "atmel,sama5d2-sdhci" or "microchip,sam9x60-sdhci". 9- clocks: Phandlers to the clocks. 10- clock-names: Must be "hclock", "multclk", "baseclk" for 11 "atmel,sama5d2-sdhci". 12 Must be "hclock", "multclk" for "microchip,sam9x60-sdhci". 13 14Optional properties: 15- assigned-clocks: The same with "multclk". 16- assigned-clock-rates The rate of "multclk" in order to not rely on the 17 gck configuration set by previous components. 18- microchip,sdcal-inverted: when present, polarity on the SDCAL SoC pin is 19 inverted. The default polarity for this signal is described in the datasheet. 20 For instance on SAMA5D2, the pin is usually tied to the GND with a resistor 21 and a capacitor (see "SDMMC I/O Calibration" chapter). 22 23Example: 24 25mmc0: sdio-host@a0000000 { 26 compatible = "atmel,sama5d2-sdhci"; 27 reg = <0xa0000000 0x300>; 28 interrupts = <31 IRQ_TYPE_LEVEL_HIGH 0>; 29 clocks = <&sdmmc0_hclk>, <&sdmmc0_gclk>, <&main>; 30 clock-names = "hclock", "multclk", "baseclk"; 31 assigned-clocks = <&sdmmc0_gclk>; 32 assigned-clock-rates = <480000000>; 33}; 34