Other Parts Discussed in Thread: PCF8575, TPS65090
Tool/software: Linux
Dear Team,
I am looking to have early prints in MLO/u-boot.
From u-boot menuconfig, there are following options, which one to use
1) ARM Debug
2) Device Drivers --> Serial Drivers
With this configs enabled I see following compilation errors:
LD spl/u-boot-spl
drivers/built-in.o: In function `_debug_uart_putc':
/home/vamshig/Public/Project/ATP/Project5/src/Dec23/u-boot/drivers/serial/ns16550.c:290: undefined reference to `serial_in_shift'
/home/vamshig/Public/Project/ATP/Project5/src/Dec23/u-boot/drivers/serial/ns16550.c:292: undefined reference to `serial_out_shift'
/home/vamshig/Public/Project/ATP/Project5/src/Dec23/u-boot/drivers/serial/ns16550.c:290: undefined reference to `serial_in_shift'
/home/vamshig/Public/Project/ATP/Project5/src/Dec23/u-boot/drivers/serial/ns16550.c:292: undefined reference to `serial_out_shift'
make[1]: *** [spl/u-boot-spl] Error 1
make: *** [spl/u-boot-spl] Error 2
on AM571x we are using UART3, hence
- Base address: 0x48020000
- Clock: 48MHz
Please give inputs.
In worst case my idea is as below:
- Do pin-mux for UART
- Configure baudrate to 115200
- Write to Tx reg
- If sample code available please share.
Thanks