blob: 8d7138e5d146c35264c0c2b777e48c3c1972a870 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/uart.h>
#include <gpio.h>
#define UART_TX_PIN GPIO(4)
static void set_tx(int line_state)
{
gpio_set(UART_TX_PIN, line_state);
}
void uart_init(unsigned int idx)
{
gpio_output(UART_TX_PIN, 1);
}
void uart_tx_byte(unsigned int idx, unsigned char data)
{
uart_bitbang_tx_byte(data, set_tx);
}
void uart_tx_flush(unsigned int idx)
{
/* unnecessary, PIO Tx means transaction is over when tx_byte returns */
}
unsigned char uart_rx_byte(unsigned int idx)
{
return 0; /* not implemented */
}