dt-bindings: sdhci-omap: Add properties for using external dma (83a1b4cc) · Commits · 戴 / test

sdhci-omap can support both external dma controller via dmaengine framework as well as ADMA which standard SD host controller provides. Add binding documentation for these external dma properties. Signed-off-by:

Chunyan Zhang <zhang.chunyan@linaro.org> Signed-off-by:

Faiz Abbas <faiz_abbas@ti.com> Reviewed-by:

Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200116105154.7685-2-faiz_abbas@ti.com Signed-off-by:

Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/sdhci-omap.txt

+9 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,13 @@ Required properties:
		"hs200_1_8v",
		- pinctrl-<n> : Pinctrl states as described in bindings/pinctrl/pinctrl-bindings.txt

		Optional properties:
		- 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: List of DMA request names. These strings correspond 1:1 with the
		DMA specifiers listed in dmas. The string naming is to be "tx"
		and "rx" for TX and RX DMA requests, respectively.

		Example:
		mmc1: mmc@4809c000 {
		compatible = "ti,dra7-sdhci";
		@@ -22,4 +29,6 @@ Example:
		ti,hwmods = "mmc1";
		bus-width = <4>;
		vmmc-supply = <&vmmc>; /* phandle to regulator node */
		dmas = <&sdma 61 &sdma 62>;
		dma-names = "tx", "rx";
		};

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