Kernel-4.18.0-80.el8_i2c-davinci

• Texas Instruments Davinci/Keystone I2C

This file provides information, what the device node for the
davinci/keystone i2c interface contains.

Required properties:

• compatible: “ti,davinci-i2c” or “ti,keystone-i2c”;
• reg : Offset and length of the register set for the device
• clocks: I2C functional clock phandle.

  For 66AK2G this property should be set per binding,
  Documentation/devicetree/bindings/clock/ti,sci-clk.txt
  

SoC-specific Required Properties:

The following are mandatory properties for Keystone 2 66AK2G SoCs only:

• power-domains: Should contain a phandle to a PM domain provider node

        and an args specifier containing the I2C device id
        value. This property is as per the binding,
        Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
  

Recommended properties :

• interrupts : standard interrupt property.
• clock-frequency : desired I2C bus clock frequency in Hz.
• ti,has-pfunc: boolean; if defined, it indicates that SoC supports PFUNC
  registers. PFUNC registers allow to switch I2C pins to function as
  GPIOs, so they can be toggled manually.

Example (enbw_cmc board):
i2c@1c22000 {
compatible = “ti,davinci-i2c”;
reg = <0x22000 0x1000>;
clock-frequency = <100000>;
interrupts = <15>;
interrupt-parent = <&intc>;
#address-cells = <1>;
#size-cells = <0>;

    dtt@48 {
        compatible = "national,lm75";
        reg = <0x48>;
    };
};