1. I want use UART1 for RS232 communication. for RTS and CTS lines i want use UART4_Tx and UART_Rx. Is that the right way to do ? How to change the device tree for this configuration.
2. And also anyone help me to write a device tree changes procedure to connect I2C expander to I2C3 bus.
3. How to write a device tree for registering the pins for GPIO.
Thanks in Advance,