About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / devicetree / bindings / i2c / samsung-i2c.txt




Custom Search

Based on kernel version 3.7. Page generated on 2012-12-12 10:00 EST.

1	* Samsung's I2C controller
2	
3	The Samsung's I2C controller is used to interface with I2C devices.
4	
5	Required properties:
6	  - compatible: value should be either of the following.
7	      (a) "samsung, s3c2410-i2c", for i2c compatible with s3c2410 i2c.
8	      (b) "samsung, s3c2440-i2c", for i2c compatible with s3c2440 i2c.
9	      (c) "samsung, s3c2440-hdmiphy-i2c", for s3c2440-like i2c used
10	          inside HDMIPHY block found on several samsung SoCs
11	  - reg: physical base address of the controller and length of memory mapped
12	    region.
13	  - interrupts: interrupt number to the cpu.
14	  - samsung,i2c-sda-delay: Delay (in ns) applied to data line (SDA) edges.
15	
16	Optional properties:
17	  - gpios: The order of the gpios should be the following: <SDA, SCL>.
18	    The gpio specifier depends on the gpio controller. Required in all
19	    cases except for "samsung,s3c2440-hdmiphy-i2c" whose input/output
20	    lines are permanently wired to the respective client
21	  - samsung,i2c-slave-addr: Slave address in multi-master enviroment. If not
22	    specified, default value is 0.
23	  - samsung,i2c-max-bus-freq: Desired frequency in Hz of the bus. If not
24	    specified, the default value in Hz is 100000.
25	
26	Example:
27	
28		i2c@13870000 {
29			compatible = "samsung,s3c2440-i2c";
30			reg = <0x13870000 0x100>;
31			interrupts = <345>;
32			samsung,i2c-sda-delay = <100>;
33			samsung,i2c-max-bus-freq = <100000>;
34			gpios = <&gpd1 2 0 /* SDA */
35				 &gpd1 3 0 /* SCL */>;
36			#address-cells = <1>;
37			#size-cells = <0>;
38	
39			wm8994@1a {
40				compatible = "wlf,wm8994";
41				reg = <0x1a>;
42			};
43		};
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.