Kernel-3.10.0-957.el7_spi-gpio

SPI-GPIO devicetree bindings

Required properties:

• compatible: should be set to “spi-gpio”
• #address-cells: should be set to <0x1>
• ranges
• gpio-sck: GPIO spec for the SCK line to use
• gpio-miso: GPIO spec for the MISO line to use
• gpio-mosi: GPIO spec for the MOSI line to use
• cs-gpios: GPIOs to use for chipselect lines.

        Not needed if num-chipselects = <0>.
  

• num-chipselects: Number of chipselect lines. Should be <0> if a single device

               with no chip select is connected.
  

Example:

spi {
    compatible = "spi-gpio";
    #address-cells = <0x1>;
    ranges;

    gpio-sck = <&gpio 95 0>;
    gpio-miso = <&gpio 98 0>;
    gpio-mosi = <&gpio 97 0>;
    cs-gpios = <&gpio 125 0>;
    num-chipselects = <1>;

    /* clients */
};