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authorChao Fu <B44548@freescale.com>2013-08-16 11:08:54 +0800
committerMark Brown <broonie@linaro.org>2013-08-22 11:33:13 +0100
commit9cbd72e577078c18d0c857dd050dac139b36db77 (patch)
tree1b2fb3b98e2d6f061e16d847860eeb37b624631d
parentb36f4be3de1b123d8601de062e7dbfc904f305fb (diff)
Documentation: DT: Add Freescale DSPI driver
This patch adds the document for DSPI driver under Documentation/devicetree/bindings/spi/. Signed-off-by: Chao Fu <b44548@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
-rw-r--r--Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt42
1 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt b/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
new file mode 100644
index 000000000000..a1fb3035a42b
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
@@ -0,0 +1,42 @@
+ARM Freescale DSPI controller
+
+Required properties:
+- compatible : "fsl,vf610-dspi"
+- reg : Offset and length of the register set for the device
+- interrupts : Should contain SPI controller interrupt
+- clocks: from common clock binding: handle to dspi clock.
+- clock-names: from common clock binding: Shall be "dspi".
+- pinctrl-0: pin control group to be used for this controller.
+- pinctrl-names: must contain a "default" entry.
+- spi-num-chipselects : the number of the chipselect signals.
+- bus-num : the slave chip chipselect signal number.
+Example:
+
+dspi0@4002c000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,vf610-dspi";
+ reg = <0x4002c000 0x1000>;
+ interrupts = <0 67 0x04>;
+ clocks = <&clks VF610_CLK_DSPI0>;
+ clock-names = "dspi";
+ spi-num-chipselects = <5>;
+ bus-num = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_dspi0_1>;
+ status = "okay";
+
+ sflash: at26df081a@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "atmel,at26df081a";
+ spi-max-frequency = <16000000>;
+ spi-cpol;
+ spi-cpha;
+ reg = <0>;
+ linux,modalias = "m25p80";
+ modal = "at26df081a";
+ };
+};
+
+