target/linux/ramips/patches-4.3/0041-DT-Add-documentation-for-spi-rt2880.patch

   1 From da6015e7f19d749f135f7ac55c4ec47b06faa868 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Fri, 9 Aug 2013 20:12:59 +0200
   4 Subject: [PATCH 41/53] DT: Add documentation for spi-rt2880
   5
   6 Describe the SPI master found on the MIPS based Ralink RT2880 SoC.
   7
   8 Signed-off-by: John Crispin <blogic@openwrt.org>
   9 ---
  10  .../devicetree/bindings/spi/spi-rt2880.txt         |   28 ++++++++++++++++++++
  11  1 file changed, 28 insertions(+)
  12  create mode 100644 Documentation/devicetree/bindings/spi/spi-rt2880.txt
  13
  14 diff --git a/Documentation/devicetree/bindings/spi/spi-rt2880.txt b/Documentation/devicetree/bindings/spi/spi-rt2880.txt
  15 new file mode 100644
  16 index 0000000..068bc90
  17 --- /dev/null
  18 +++ b/Documentation/devicetree/bindings/spi/spi-rt2880.txt
  19 @@ -0,0 +1,28 @@
  20 +Ralink SoC RT2880 SPI master controller.
  21 +
  22 +This SPI controller is found on most wireless SoCs made by ralink.
  23 +
  24 +Required properties:
  25 +- compatible : "ralink,rt2880-spi"
  26 +- reg : The register base for the controller.
  27 +- #address-cells : <1>, as required by generic SPI binding.
  28 +- #size-cells : <0>, also as required by generic SPI binding.
  29 +
  30 +Child nodes as per the generic SPI binding.
  31 +
  32 +Example:
  33 +
  34 +       spi@b00 {
  35 +               compatible = "ralink,rt2880-spi";
  36 +               reg = <0xb00 0x100>;
  37 +
  38 +               #address-cells = <1>;
  39 +               #size-cells = <0>;
  40 +
  41 +               m25p80@0 {
  42 +                       compatible = "m25p80";
  43 +                       reg = <0>;
  44 +                       spi-max-frequency = <10000000>;
  45 +               };
  46 +       };
  47 +
  48 --
  49 1.7.10.4
  50