[U-Boot] [PATCH v3 2/2] i2c: atmel: DT binding for i2c driver

[Songjun Wu]

DT binding documentation for atmel i2c driver.

Signed-off-by: Songjun Wu <songjun.wu at atmel.com>
---

Changes in v3: None
Changes in v2:
- Add phandles to input clocks

 doc/device-tree-bindings/i2c/i2c-at91.txt | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 doc/device-tree-bindings/i2c/i2c-at91.txt

diff --git a/doc/device-tree-bindings/i2c/i2c-at91.txt b/doc/device-tree-bindings/i2c/i2c-at91.txt
new file mode 100644
index 0000000..2065b73
--- /dev/null
+++ b/doc/device-tree-bindings/i2c/i2c-at91.txt
@@ -0,0 +1,26 @@
+I2C for Atmel platforms
+
+Required properties :
+- compatible : Must be "atmel,at91rm9200-i2c", "atmel,at91sam9261-i2c",
+     "atmel,at91sam9260-i2c", "atmel,at91sam9g20-i2c", "atmel,at91sam9g10-i2c",
+     "atmel,at91sam9x5-i2c", "atmel,sama5d4-i2c" or "atmel,sama5d2-i2c".
+- reg: physical base address of the controller and length of memory mapped
+     region.
+- #address-cells = <1>;
+- #size-cells = <0>;
+- clocks: phandles to input clocks.
+
+Optional properties:
+- clock-frequency: Desired I2C bus frequency in Hz, default value is 100000.
+- Child nodes conforming to i2c bus binding.
+
+Examples :
+
+i2c0: i2c at f8028000 {
+	compatible = "atmel,sama5d2-i2c";
+	reg = <0xf8028000 0x100>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	clocks = <&twi0_clk>;
+	clock-frequency = <100000>;
+};
-- 
2.7.4