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| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mxs-mmc.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mxs-mmc.txt b/Documentation/devicetree/bindings/mmc/mxs-mmc.txt new file mode 100644 index 000000000..515addc20 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/mxs-mmc.txt @@ -0,0 +1,27 @@ +* Freescale MXS MMC controller + +The Freescale MXS Synchronous Serial Ports (SSP) can act as a MMC controller +to support MMC, SD, and SDIO types of memory cards. + +This file documents differences between the core properties in mmc.txt +and the properties used by the mxsmmc driver. + +Required properties: +- compatible: Should be "fsl,<chip>-mmc". The supported chips include + imx23 and imx28. +- interrupts: Should contain ERROR interrupt number +- dmas: DMA specifier, consisting of a phandle to DMA controller node + and SSP DMA channel ID. + Refer to dma.txt and fsl-mxs-dma.txt for details. +- dma-names: Must be "rx-tx". + +Examples: + +ssp0: ssp@80010000 { + compatible = "fsl,imx28-mmc"; + reg = <0x80010000 2000>; + interrupts = <96>; + dmas = <&dma_apbh 0>; + dma-names = "rx-tx"; + bus-width = <8>; +}; |