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Commit b4c27763 authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Ulf Hansson
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mmc: sh_mmcif: Document DT bindings 



The sh-mmcif driver implements DT support but the bindings are not
documented. Document them.

Cc: devicetree@vger.kernel.org
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 6b91f2d4

Documentation/devicetree/bindings/mmc/renesas,mmcif.txt

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* Renesas Multi Media Card Interface (MMCIF) Controller



This file documents differences between the core properties in mmc.txt

and the properties used by the MMCIF device.





Required properties:



- compatible: must contain one of the following

	- "renesas,mmcif-r8a7740" for the MMCIF found in r8a7740 SoCs

	- "renesas,mmcif-r8a7790" for the MMCIF found in r8a7790 SoCs

	- "renesas,mmcif-r8a7791" for the MMCIF found in r8a7791 SoCs

	- "renesas,sh-mmcif" for the generic MMCIF



- clocks: reference to the functional clock



- dmas: reference to the DMA channels, one per channel name listed in the

  dma-names property.

- dma-names: must contain "tx" for the transmit DMA channel and "rx" for the

  receive DMA channel.





Example: R8A7790 (R-Car H2) MMCIF0



	mmcif0: mmc@ee200000 {

		compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif";

		reg = <0 0xee200000 0 0x80>;

		interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>;

		dmas = <&dmac0 0xd1>, <&dmac0 0xd2>;

		dma-names = "tx", "rx";

	};