Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / mmc / davinci_mmc.txt

diff --git a/kernel/Documentation/devicetree/bindings/mmc/davinci_mmc.txt b/kernel/Documentation/devicetree/bindings/mmc/davinci_mmc.txt
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+* TI Highspeed MMC host controller for DaVinci
+
+The Highspeed MMC Host Controller on TI DaVinci family
+provides an interface for MMC, SD and SDIO types of memory cards.
+
+This file documents the properties used by the davinci_mmc driver.
+
+Required properties:
+- compatible:
+ Should be "ti,da830-mmc": for da830, da850, dm365
+ Should be "ti,dm355-mmc": for dm355, dm644x
+
+Optional properties:
+- bus-width: Number of data lines, can be <1>, <4>, or <8>, default <1>
+- max-frequency: Maximum operating clock frequency, default 25MHz.
+- dmas: List of DMA specifiers with the controller specific format
+       as described in the generic DMA client binding. A tx and rx
+       specifier is required.
+- dma-names: RX and TX  DMA request names. These strings correspond
+       1:1 with the DMA specifiers listed in dmas.
+
+Example:
+mmc0: mmc@1c40000 {
+       compatible = "ti,da830-mmc",
+       reg = <0x40000 0x1000>;
+       interrupts = <16>;
+       status = "okay";
+       bus-width = <4>;
+       max-frequency = <50000000>;
+       dmas = <&edma 16
+               &edma 17>;
+       dma-names = "rx", "tx";
+};