From 16c4c52435cf8bb6e5986c14d36d93a0dd4c98df Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 13 Nov 2012 18:16:43 +0100 Subject: bindings: i2c: use consistent naming for i2c binding descriptions Filenames of devictree binding documentation seems to be arbitrary and for me it is unneeded hazzle to find the corresponding documentation for a specific driver. Naming the description the same as the driver is a lot easier and makes sense to me since the driver defines the binding it understands. Also, remove a reference in one source to the binding documentation, since path information easily gets stale. Signed-off-by: Wolfram Sang Cc: Rob Herring Cc: Grant Likely Signed-off-by: Grant Likely --- .../devicetree/bindings/i2c/i2c-s3c2410.txt | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt (limited to 'Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt') diff --git a/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt new file mode 100644 index 000000000000..b6cb5a12c672 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt @@ -0,0 +1,43 @@ +* 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. + (c) "samsung, s3c2440-hdmiphy-i2c", for s3c2440-like i2c used + inside HDMIPHY block found on several samsung SoCs + - 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. + +Optional properties: + - gpios: The order of the gpios should be the following: . + The gpio specifier depends on the gpio controller. Required in all + cases except for "samsung,s3c2440-hdmiphy-i2c" whose input/output + lines are permanently wired to the respective client + - 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 v1.2.3