From dfcd04b19d16c0016c705ed96a8b3cfa5315a2e9 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Thu, 8 Sep 2011 15:09:35 +0800 Subject: i2c-imx: add device tree probe support It adds device tree probe support for i2c-imx driver. Signed-off-by: Shawn Guo Cc: Grant Likely Cc: Darius Augulis Cc: Ben Dooks Acked-by: Grant Likely Signed-off-by: Ben Dooks --- .../devicetree/bindings/i2c/fsl-imx-i2c.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt b/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt new file mode 100644 index 0000000..f3cf43b --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt @@ -0,0 +1,25 @@ +* Freescale Inter IC (I2C) and High Speed Inter IC (HS-I2C) for i.MX + +Required properties: +- compatible : Should be "fsl,-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>; +}; -- cgit v1.1 From 5a5f50802f5a31b9e15de8df40d5621af970a560 Mon Sep 17 00:00:00 2001 From: Thomas Abraham Date: Tue, 13 Sep 2011 09:46:05 +0530 Subject: i2c-s3c2410: Add device tree support Add device tree probe support for Samsung's s3c2410 i2c driver. Cc: Ben Dooks Signed-off-by: Thomas Abraham Acked-by: Grant Likely Signed-off-by: Ben Dooks --- .../devicetree/bindings/i2c/samsung-i2c.txt | 39 ++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/samsung-i2c.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/i2c/samsung-i2c.txt b/Documentation/devicetree/bindings/i2c/samsung-i2c.txt new file mode 100644 index 0000000..38832c7 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/samsung-i2c.txt @@ -0,0 +1,39 @@ +* 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: . + 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>; + }; + }; -- cgit v1.1