From 235daa4bf6b6467b5df675dcfe5041b7f62eeae3 Mon Sep 17 00:00:00 2001 From: Julien Viard de Galbert Date: Tue, 20 Feb 2018 11:45:48 +0100 Subject: driver/uart: Introduce a way for mainboard to override the baudrate The rationale is to allow the mainboard to override the default baudrate for instance by sampling GPIOs at boot. A new configuration option is available for mainboards to select this behaviour. It will then have to define the function get_uart_baudrate to return the computed baudrate. Change-Id: I970ee788bf90b9e1a8c6ccdc5eee8029d9af0ecc Signed-off-by: Julien Viard de Galbert Reviewed-on: https://review.coreboot.org/23713 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber --- src/soc/mediatek/mt8173/uart.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/soc/mediatek/mt8173') diff --git a/src/soc/mediatek/mt8173/uart.c b/src/soc/mediatek/mt8173/uart.c index 36a279fa65..93625c4bfb 100644 --- a/src/soc/mediatek/mt8173/uart.c +++ b/src/soc/mediatek/mt8173/uart.c @@ -87,7 +87,7 @@ static void mtk_uart_init(void) { /* Use a hardcoded divisor for now. */ const unsigned uartclk = 26 * MHz; - const unsigned baudrate = CONFIG_TTYS0_BAUD; + const unsigned baudrate = get_uart_baudrate(); const uint8_t line_config = UART8250_LCR_WLS_8; /* 8n1 */ unsigned highspeed, quot, divisor, remainder; @@ -177,7 +177,7 @@ void uart_fill_lb(void *data) struct lb_serial serial; serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED; serial.baseaddr = UART0_BASE; - serial.baud = CONFIG_TTYS0_BAUD; + serial.baud = get_uart_baudrate(); serial.regwidth = 4; lb_add_serial(&serial, data); -- cgit v1.2.3