Kernel-4.18.0-80.el8_spi-sc18is602

NXP SC18IS602/SCIS603

Required properties:
- compatible : Should be one of
“nxp,sc18is602”
“nxp,sc18is602b”
“nxp,sc18is603”
- reg: I2C bus address

Optional properties:
- clock-frequency : external oscillator clock frequency. If not
specified, the SC18IS602 default frequency (7372000) will be used.

The clock-frequency property is relevant and needed only if the chip has an
external oscillator (SC18IS603).

Example:

sc18is603@28 {
    compatible = "nxp,sc18is603";
    reg = <0x28>;
    clock-frequency = <14744000>;
}