From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- .../devicetree/bindings/spi/fsl-imx-cspi.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt (limited to 'Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt') diff --git a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt new file mode 100644 index 000000000..523341a0e --- /dev/null +++ b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt @@ -0,0 +1,37 @@ +* Freescale (Enhanced) Configurable Serial Peripheral Interface + (CSPI/eCSPI) for i.MX + +Required properties: +- compatible : + - "fsl,imx1-cspi" for SPI compatible with the one integrated on i.MX1 + - "fsl,imx21-cspi" for SPI compatible with the one integrated on i.MX21 + - "fsl,imx27-cspi" for SPI compatible with the one integrated on i.MX27 + - "fsl,imx31-cspi" for SPI compatible with the one integrated on i.MX31 + - "fsl,imx35-cspi" for SPI compatible with the one integrated on i.MX35 + - "fsl,imx51-ecspi" for SPI compatible with the one integrated on i.MX51 +- reg : Offset and length of the register set for the device +- interrupts : Should contain CSPI/eCSPI interrupt +- fsl,spi-num-chipselects : Contains the number of the chipselect +- cs-gpios : Specifies the gpio pins to be used for chipselects. +- clocks : Clock specifiers for both ipg and per clocks. +- clock-names : Clock names should include both "ipg" and "per" +See the clock consumer binding, + Documentation/devicetree/bindings/clock/clock-bindings.txt +- dmas: DMA specifiers for tx and rx dma. See the DMA client binding, + Documentation/devicetree/bindings/dma/dma.txt +- dma-names: DMA request names should include "tx" and "rx" if present. + +Example: + +ecspi@70010000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,imx51-ecspi"; + reg = <0x70010000 0x4000>; + interrupts = <36>; + fsl,spi-num-chipselects = <2>; + cs-gpios = <&gpio3 24 0>, /* GPIO3_24 */ + <&gpio3 25 0>; /* GPIO3_25 */ + dmas = <&sdma 3 7 1>, <&sdma 4 7 2>; + dma-names = "rx", "tx"; +}; -- cgit v1.2.3-54-g00ecf