summaryrefslogtreecommitdiffstats
path: root/kernel/Documentation/devicetree/bindings/i2c/i2c-mxs.txt
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/Documentation/devicetree/bindings/i2c/i2c-mxs.txt')
-rw-r--r--kernel/Documentation/devicetree/bindings/i2c/i2c-mxs.txt25
1 files changed, 25 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/i2c/i2c-mxs.txt b/kernel/Documentation/devicetree/bindings/i2c/i2c-mxs.txt
new file mode 100644
index 000000000..4e1c8ac01
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/i2c/i2c-mxs.txt
@@ -0,0 +1,25 @@
+* Freescale MXS Inter IC (I2C) Controller
+
+Required properties:
+- compatible: Should be "fsl,<chip>-i2c"
+- reg: Should contain registers location and length
+- interrupts: Should contain ERROR interrupt number
+- clock-frequency: Desired I2C bus clock frequency in Hz.
+ Only 100000Hz and 400000Hz modes are supported.
+- dmas: DMA specifier, consisting of a phandle to DMA controller node
+ and I2C DMA channel ID.
+ Refer to dma.txt and fsl-mxs-dma.txt for details.
+- dma-names: Must be "rx-tx".
+
+Examples:
+
+i2c0: i2c@80058000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx28-i2c";
+ reg = <0x80058000 2000>;
+ interrupts = <111>;
+ clock-frequency = <100000>;
+ dmas = <&dma_apbx 6>;
+ dma-names = "rx-tx";
+};