target/linux/brcm63xx/patches-4.9/001-4.12-05-spi-bcm63xx-hsspi-document-device-tree-bindings.patch

   1 From ff759cc25db31bbb3469abb16a0306f110c4c7fa Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jonas.gorski@gmail.com>
   3 Date: Thu, 10 Sep 2015 14:52:32 +0200
   4 Subject: [PATCH 2/3] dt-bindings: spi: document bcm63xx HS SPI devicetree
   5  bindings
   6
   7 Add documentation for the bindings of the high speed SPI controller found
   8 on newer bcm63xx SoCs.
   9
  10 Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
  11 ---
  12  .../devicetree/bindings/spi/spi-bcm63xx-hsspi.txt  | 33 ++++++++++++++++++++++
  13  1 file changed, 33 insertions(+)
  14  create mode 100644 Documentation/devicetree/bindings/spi/spi-bcm63xx-hsspi.txt
  15
  16 --- /dev/null
  17 +++ b/Documentation/devicetree/bindings/spi/spi-bcm63xx-hsspi.txt
  18 @@ -0,0 +1,33 @@
  19 +Binding for Broadcom BCM6328 High Speed SPI controller
  20 +
  21 +Required properties:
  22 +- compatible: must contain of "brcm,bcm6328-hsspi".
  23 +- reg: Base address and size of the controllers memory area.
  24 +- interrupts: Interrupt for the SPI block.
  25 +- clocks: phandles of the SPI clock and the PLL clock.
  26 +- clock-names: must be "hsspi", "pll".
  27 +- #address-cells: <1>, as required by generic SPI binding.
  28 +- #size-cells: <0>, also as required by generic SPI binding.
  29 +
  30 +Optional properties:
  31 +- num-cs: some controllers have less than 8 cs signals. Defaults to 8
  32 +  if absent.
  33 +
  34 +Child nodes as per the generic SPI binding.
  35 +
  36 +Example:
  37 +
  38 +       spi@10001000 {
  39 +               compatible = "brcm,bcm6328-hsspi";
  40 +               reg = <0x10001000 0x600>;
  41 +
  42 +               interrupts = <29>;
  43 +
  44 +               clocks = <&clkctl 9>, <&hsspi_pll>;
  45 +               clock-names = "hsspi", "pll";
  46 +
  47 +               num-cs = <2>;
  48 +
  49 +               #address-cells = <1>;
  50 +               #size-cells = <0>;
  51 +       };