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author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2014-07-16 00:45:11 +0200 |
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committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-07-26 11:38:19 +0200 |
commit | b4c27763d749ab3a4dddfcfd44dc5af15bb91a0e (patch) | |
tree | d802d4373e1b9fd65571f28e8d427628bcd35819 /Documentation/devicetree/bindings/mmc | |
parent | 6b91f2d42ad5506f21f83e25ffd56f27981825a7 (diff) | |
download | op-kernel-dev-b4c27763d749ab3a4dddfcfd44dc5af15bb91a0e.zip op-kernel-dev-b4c27763d749ab3a4dddfcfd44dc5af15bb91a0e.tar.gz |
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>
Diffstat (limited to 'Documentation/devicetree/bindings/mmc')
-rw-r--r-- | Documentation/devicetree/bindings/mmc/renesas,mmcif.txt | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/renesas,mmcif.txt b/Documentation/devicetree/bindings/mmc/renesas,mmcif.txt new file mode 100644 index 0000000..299081f --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/renesas,mmcif.txt @@ -0,0 +1,32 @@ +* 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"; + }; |