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First you need to setup pinmuxing for UART1. Add these lines at in board-da850evm.c:
static const short da850_evm_uart_pins[] = { DA850_UART1_RXD, DA850_UART1_TXD, -1 };
and in the da850_evm_init() function add
ret = davinci_cfg_reg_list(da850_evm_uart_pins); if (ret) pr_warning("da850_evm_init: uart mux setup failed: %d\n", ret);
The da850_evm_init() function disables all UARTs that are not used in Linux (currently UART 0 and UART 1). So you must modify it so UART1 does not get disabled. Comment out this code:
