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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: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Laurent Pinchart 2014-07-16 00:45:11 +02:00 committed by Ulf Hansson
parent 6b91f2d42a
commit b4c27763d7
1 changed files with 32 additions and 0 deletions
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Documentation/devicetree/bindings/mmc/renesas,mmcif.txt Normal file
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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";
};