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