Hello, I'm asking for help because I have a problem.
From imx8qxp chip, use sc16is750
I want to implement i2c to uart.
The following was added to file imx8x-mek-rpmsg.dtsi.
sc16is750: sc16is750@4d {
compatible = "nxp,sc16is750";
reg = <0x4d>;
clocks = <&sc16is750_clk>;
interrupt-parent = <&lsio_gpio1>;
interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
gpio-controller;
#gpio-cells = <2>;
sc16is750_clk: sc16is750_clk {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <7372800>;
};
};
When the system boots, the following message appears.
serial serial0: tty port ttySC0 registered
After the system boot,
ttySC0 is not visible in the /dev directory.
For reference, the gpio function added to sc16is750 operates normally.
What's the problem? Please help me.
