0001 ST SSC binding, for I2C mode operation
0002
0003 Required properties :
0004 - compatible : Must be "st,comms-ssc-i2c" or "st,comms-ssc4-i2c"
0005 - reg : Offset and length of the register set for the device
0006 - interrupts : the interrupt specifier
0007 - clock-names: Must contain "ssc".
0008 - clocks: Must contain an entry for each name in clock-names. See the common
0009 clock bindings.
0010 - A pinctrl state named "default" must be defined to set pins in mode of
0011 operation for I2C transfer.
0012
0013 Optional properties :
0014 - clock-frequency : Desired I2C bus clock frequency in Hz. If not specified,
0015 the default 100 kHz frequency will be used. As only Normal and Fast modes
0016 are supported, possible values are 100000 and 400000.
0017 - st,i2c-min-scl-pulse-width-us : The minimum valid SCL pulse width that is
0018 allowed through the deglitch circuit. In units of us.
0019 - st,i2c-min-sda-pulse-width-us : The minimum valid SDA pulse width that is
0020 allowed through the deglitch circuit. In units of us.
0021 - A pinctrl state named "idle" could be defined to set pins in idle state
0022 when I2C instance is not performing a transfer.
0023 - A pinctrl state named "sleep" could be defined to set pins in sleep state
0024 when driver enters in suspend.
0025
0026
0027
0028 Example :
0029
0030 i2c0: i2c@fed40000 {
0031 compatible = "st,comms-ssc4-i2c";
0032 reg = <0xfed40000 0x110>;
0033 interrupts = <GIC_SPI 187 IRQ_TYPE_LEVEL_HIGH>;
0034 clocks = <&clk_s_a0_ls CLK_ICN_REG>;
0035 clock-names = "ssc";
0036 clock-frequency = <400000>;
0037 pinctrl-names = "default";
0038 pinctrl-0 = <&pinctrl_i2c0_default>;
0039 st,i2c-min-scl-pulse-width-us = <0>;
0040 st,i2c-min-sda-pulse-width-us = <5>;
0041 };
