2 files changed, 64 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt b/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt
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index 000000000000..f3cf43b66f7e
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+++ b/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt
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+* Freescale Inter IC (I2C) and High Speed Inter IC (HS-I2C) for i.MX
+
+Required properties:
+- compatible : Should be "fsl,<chip>-i2c"
+- reg : Should contain I2C/HS-I2C registers location and length
+- interrupts : Should contain I2C/HS-I2C interrupt
+
+Optional properties:
+- clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz.
+  The absence of the propoerty indicates the default frequency 100 kHz.
+
+Examples:
+
+i2c@83fc4000 { /* I2C2 on i.MX51 */
+        compatible = "fsl,imx51-i2c", "fsl,imx1-i2c";
+        reg = <0x83fc4000 0x4000>;
+        interrupts = <63>;
+};
+
+i2c@70038000 { /* HS-I2C on i.MX51 */
+        compatible = "fsl,imx51-i2c", "fsl,imx1-i2c";
+        reg = <0x70038000 0x4000>;
+        interrupts = <64>;
+        clock-frequency = <400000>;
+};
diff --git a/Documentation/devicetree/bindings/i2c/samsung-i2c.txt b/Documentation/devicetree/bindings/i2c/samsung-i2c.txt
new file mode 100644
index 000000000000..38832c712919
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+++ b/Documentation/devicetree/bindings/i2c/samsung-i2c.txt
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+* Samsung's I2C controller
+
+The Samsung's I2C controller is used to interface with I2C devices.
+
+Required properties:
+  - compatible: value should be either of the following.
+      (a) "samsung, s3c2410-i2c", for i2c compatible with s3c2410 i2c.
+      (b) "samsung, s3c2440-i2c", for i2c compatible with s3c2440 i2c.
+  - reg: physical base address of the controller and length of memory mapped
+    region.
+  - interrupts: interrupt number to the cpu.
+  - samsung,i2c-sda-delay: Delay (in ns) applied to data line (SDA) edges.
+  - gpios: The order of the gpios should be the following: <SDA, SCL>.
+    The gpio specifier depends on the gpio controller.
+
+Optional properties:
+  - samsung,i2c-slave-addr: Slave address in multi-master enviroment. If not
+    specified, default value is 0.
+  - samsung,i2c-max-bus-freq: Desired frequency in Hz of the bus. If not
+    specified, the default value in Hz is 100000.
+
+Example:
+
+        i2c@13870000 {
+                compatible = "samsung,s3c2440-i2c";
+                reg = <0x13870000 0x100>;
+                interrupts = <345>;
+                samsung,i2c-sda-delay = <100>;
+                samsung,i2c-max-bus-freq = <100000>;
+                gpios = <&gpd1 2 0 /* SDA */
+                         &gpd1 3 0 /* SCL */>;
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                wm8994@1a {
+                        compatible = "wlf,wm8994";
+                        reg = <0x1a>;
+                };
+        };