1 * Samsung's I2C controller
3 The Samsung's I2C controller is used to interface with I2C devices.
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 (d) "samsung, exynos5440-i2c", for s3c2440-like i2c used
12 on EXYNOS5440 which does not need GPIO configuration.
13 (e) "samsung, exynos5-sata-phy-i2c", for s3c2440-like i2c used as
14 a host to SATA PHY controller on an internal bus.
15 - reg: physical base address of the controller and length of memory mapped
17 - interrupts: interrupt number to the cpu.
18 - samsung,i2c-sda-delay: Delay (in ns) applied to data line (SDA) edges.
20 Required for all cases except "samsung,s3c2440-hdmiphy-i2c":
21 - Samsung GPIO variant (deprecated):
22 - gpios: The order of the gpios should be the following: <SDA, SCL>.
23 The gpio specifier depends on the gpio controller. Required in all
24 cases except for "samsung,s3c2440-hdmiphy-i2c" whose input/output
25 lines are permanently wired to the respective clienta
26 - Pinctrl variant (preferred, if available):
27 - pinctrl-0: Pin control group to be used for this controller.
28 - pinctrl-names: Should contain only one value - "default".
31 - samsung,i2c-slave-addr: Slave address in multi-master environment. If not
32 specified, default value is 0.
33 - samsung,i2c-max-bus-freq: Desired frequency in Hz of the bus. If not
34 specified, the default value in Hz is 100000.
35 - samsung,sysreg-phandle - handle to syscon used to control the system registers
40 compatible = "samsung,s3c2440-i2c";
41 reg = <0x13870000 0x100>;
43 samsung,i2c-sda-delay = <100>;
44 samsung,i2c-max-bus-freq = <100000>;
45 /* Samsung GPIO variant begins here */
46 gpios = <&gpd1 2 0 /* SDA */
48 /* Samsung GPIO variant ends here */
49 /* Pinctrl variant begins here */
50 pinctrl-0 = <&i2c3_bus>;
51 pinctrl-names = "default";
52 /* Pinctrl variant ends here */
57 compatible = "wlf,wm8994";