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