Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / spi / spi-st-ssc.txt

diff --git a/kernel/Documentation/devicetree/bindings/spi/spi-st-ssc.txt b/kernel/Documentation/devicetree/bindings/spi/spi-st-ssc.txt
new file mode 100644 (file)
index 0000000..fe54959
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/spi/spi-st-ssc.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>;
+               };
+       };