aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt')
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt43
1 files changed, 43 insertions, 0 deletions
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 @@
1* Samsung's I2C controller
2
3The Samsung's I2C controller is used to interface with I2C devices.
4
5Required 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
16Optional 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
26Example:
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 };