1 * Texas Instruments Davinci/Keystone I2C
2
3 This file provides information, what the device node for the
4 davinci/keystone i2c interface contains.
5
6 Required properties:
7 - compatible: "ti,davinci-i2c" or "ti,keystone-i2c";
8 - reg : Offset and length of the register set for the device
9 - clocks: I2C functional clock phandle.
10 For 66AK2G this property should be set per binding,
11 Documentation/devicetree/bindings/clock/ti,sci-clk.yaml
12
13 SoC-specific Required Properties:
14
15 The following are mandatory properties for Keystone 2 66AK2G SoCs only:
16
17 - power-domains: Should contain a phandle to a PM domain provider node
18 and an args specifier containing the I2C device id
19 value. This property is as per the binding,
20 Documentation/devicetree/bindings/soc/ti/sci-pm-domain.yaml
21
22 Recommended properties :
23 - interrupts : standard interrupt property.
24 - clock-frequency : desired I2C bus clock frequency in Hz.
25 - ti,has-pfunc: boolean; if defined, it indicates that SoC supports PFUNC
26 registers. PFUNC registers allow to switch I2C pins to function as
27 GPIOs, so they can be toggled manually.
28
29 Example (enbw_cmc board):
30 i2c@1c22000 {
31 compatible = "ti,davinci-i2c";
32 reg = <0x22000 0x1000>;
33 clock-frequency = <100000>;
34 interrupts = <15>;
35 interrupt-parent = <&intc>;
36 #address-cells = <1>;
37 #size-cells = <0>;
38
39 dtt@48 {
40 compatible = "national,lm75";
41 reg = <0x48>;
42 };
43 };
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