Kernel-3.10.0-957.el7_spi-davinci

Davinci SPI controller device bindings

Required properties:

• #address-cells: number of cells required to define a chip select
  address on the SPI bus. Should be set to 1.
• #size-cells: should be zero.
• compatible:
  • “ti,dm6441-spi” for SPI used similar to that on DM644x SoC family
  • “ti,da830-spi” for SPI used similar to that on DA8xx SoC family
• reg: Offset and length of SPI controller register space
• num-cs: Number of chip selects
• ti,davinci-spi-intr-line: interrupt line used to connect the SPI
  IP to the interrupt controller within the SoC. Possible values
  are 0 and 1. Manual says one of the two possible interrupt
  lines can be tied to the interrupt controller. Set this
  based on a specifc SoC configuration.
• interrupts: interrupt number mapped to CPU.
• clocks: spi clk phandle

Example of a NOR flash slave device (n25q032) connected to DaVinci
SPI controller device over the SPI bus.

spi0:spi@20BF0000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = “ti,dm6446-spi”;
reg = <0x20BF0000 0x1000>;
num-cs = <4>;
ti,davinci-spi-intr-line = <0>;
interrupts = <338>;
clocks = <&clkspi>;

flash: n25q032@0 {
    #address-cells = <1>;
    #size-cells = <1>;
    compatible = "st,m25p32";
    spi-max-frequency = <25000000>;
    reg = <0>;

    partition@0 {
        label = "u-boot-spl";
        reg = <0x0 0x80000>;
        read-only;
    };

    partition@1 {
        label = "test";
        reg = <0x80000 0x380000>;
    };
};

};