1 * I2C controller embedded in STMicroelectronis STM32 platforms 2 3 Required properties : 4 - compatible : Must be "st,stm32f7-i2c" 5 - reg : Offset and length of the register set for the device 6 - resets: Must contain the phandle to the reset controller 7 - clocks: Must contain the input clock of the I2C instance 8 - A pinctrl state named "default" must be defined to set pins in mode of 9 operation for I2C transfer 10 - #address-cells = <1>; 11 - #size-cells = <0>; 12 13 Optional properties : 14 - clock-frequency : Desired I2C bus clock frequency in Hz. If not specified, 15 the default 100 kHz frequency will be used. As only Normal, Fast and Fast+ 16 modes are implemented, possible values are 100000, 400000 and 1000000. 17 18 Example : 19 20 i2c1: i2c@40005400 { 21 compatible = "st,stm32f7-i2c"; 22 reg = <0x40005400 0x400>; 23 resets = <&rcc 181>; 24 clocks = <&clk_pclk1>; 25 pinctrl-names = "default"; 26 pinctrl-0 = <&pinctrl_i2c1>; 27 clock-frequency = <400000>; 28 #address-cells = <1>; 29 #size-cells = <0>; 30 }; 31
