OMAP2+ McSPI device
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Required properties:
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- compatible :
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- "ti,am654-mcspi" for AM654.
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- "ti,omap2-mcspi" for OMAP2 & OMAP3.
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- "ti,omap4-mcspi" for OMAP4+.
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- ti,spi-num-cs : Number of chipselect supported by the instance.
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- ti,hwmods: Name of the hwmod associated to the McSPI
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- ti,pindir-d0-out-d1-in: Select the D0 pin as output and D1 as
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input. The default is D0 as input and
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D1 as output.
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Optional properties:
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- dmas: List of DMA specifiers with the controller specific format
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as described in the generic DMA client binding. A tx and rx
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specifier is required for each chip select.
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- dma-names: List of DMA request names. These strings correspond
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1:1 with the DMA specifiers listed in dmas. The string naming
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is to be "rxN" and "txN" for RX and TX requests,
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respectively, where N equals the chip select number.
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Examples:
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[hwmod populated DMA resources]
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mcspi1: mcspi@1 {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "ti,omap4-mcspi";
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ti,hwmods = "mcspi1";
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ti,spi-num-cs = <4>;
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};
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[generic DMA request binding]
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mcspi1: mcspi@1 {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "ti,omap4-mcspi";
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ti,hwmods = "mcspi1";
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ti,spi-num-cs = <2>;
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dmas = <&edma 42
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&edma 43
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&edma 44
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&edma 45>;
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dma-names = "tx0", "rx0", "tx1", "rx1";
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};
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