This patch adds DT documentation for the SPI portion of ST's SSC device.
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
Documentation/devicetree/bindings/spi/spi-st.txt | 40 ++++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/spi-st.txt
diff --git a/Documentation/devicetree/bindings/spi/spi-st.txt b/Documentation/devicetree/bindings/spi/spi-st.txt
new file mode 100644
index 0000000..fe54959
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-st.txt
@@ -0,0 +1,40 @@
+STMicroelectronics SSC (SPI) Controller
+---------------------------------------
+
+Required properties:
+- compatible : "st,comms-ssc4-spi"
+- reg : Offset and length of the device's register set
+- interrupts : The interrupt specifier
+- clock-names : Must contain "ssc"
+- clocks : Must contain an entry for each name in clock-names
+ See ../clk/*
+- pinctrl-names : Uses "default", can use "sleep" if provided
+ See ../pinctrl/pinctrl-binding.txt
+
+Optional properties:
+- cs-gpios : List of GPIO chip selects
+ See ../spi/spi-bus.txt
+
+Child nodes represent devices on the SPI bus
+ See ../spi/spi-bus.txt
+
+Example:
+ spi@9840000 {
+ compatible = "st,comms-ssc4-spi";
+ reg = <0x9840000 0x110>;
+ interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_s_c0_flexgen CLK_EXT2F_A9>;
+ clock-names = "ssc";
+ pinctrl-0 = <&pinctrl_spi0_default>;
+ pinctrl-names = "default";
+ cs-gpios = <&pio17 5 0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ st95hf@0{
+ compatible = "st,st95hf";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
+ };
+ };
--
1.9.1
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