Documentation/devicetree/bindings/spi/spi-davinci.txt

   1 Davinci SPI controller device bindings
   2
   3 Required properties:
   4 - #address-cells: number of cells required to define a chip select
   5         address on the SPI bus. Should be set to 1.
   6 - #size-cells: should be zero.
   7 - compatible:
   8         - "ti,dm6441-spi" for SPI used similar to that on DM644x SoC family
   9         - "ti,da830-spi" for SPI used similar to that on DA8xx SoC family
  10 - reg: Offset and length of SPI controller register space
  11 - num-cs: Number of chip selects
  12 - ti,davinci-spi-intr-line: interrupt line used to connect the SPI
  13         IP to the interrupt controller within the SoC. Possible values
  14         are 0 and 1. Manual says one of the two possible interrupt
  15         lines can be tied to the interrupt controller. Set this
  16         based on a specifc SoC configuration.
  17 - interrupts: interrupt number mapped to CPU.
  18 - clocks: spi clk phandle
  19
  20 Example of a NOR flash slave device (n25q032) connected to DaVinci
  21 SPI controller device over the SPI bus.
  22
  23 spi0:spi@20BF0000 {
  24         #address-cells                  = <1>;
  25         #size-cells                     = <0>;
  26         compatible                      = "ti,dm6446-spi";
  27         reg                             = <0x20BF0000 0x1000>;
  28         num-cs                          = <4>;
  29         ti,davinci-spi-intr-line        = <0>;
  30         interrupts                      = <338>;
  31         clocks                          = <&clkspi>;
  32
  33         flash: n25q032@0 {
  34                 #address-cells = <1>;
  35                 #size-cells = <1>;
  36                 compatible = "st,m25p32";
  37                 spi-max-frequency = <25000000>;
  38                 reg = <0>;
  39
  40                 partition@0 {
  41                         label = "u-boot-spl";
  42                         reg = <0x0 0x80000>;
  43                         read-only;
  44                 };
  45
  46                 partition@1 {
  47                         label = "test";
  48                         reg = <0x80000 0x380000>;
  49                 };
  50         };
  51 };