drivers: serial: increase FIFO threshold for BFLB uart driver

VynDragon · cfriedt · commit 6430ad458ca5 · 2025-10-09T20:35:34.000-04:00
Increases the fifo threshold for tx, should increase speed a bit.

Signed-off-by: Camille BAUD &lt;mail@massdriver.space&gt;
diff --git a/drivers/serial/uart_bflb.c b/drivers/serial/uart_bflb.c
@@ -612,7 +612,7 @@ static DEVICE_API(uart, uart_bflb_driver_api) = {
 		.base_reg = DT_INST_REG_ADDR(instance),				\
 										\
 		.bit_order = UART_MSB_FIRST,					\
-		.tx_fifo_threshold = 8,						\
+		.tx_fifo_threshold = 16,					\
 		.rx_fifo_threshold = 0,						\
 		BFLB_UART_IRQ_HANDLER_FUNC(instance)				\
 	};									\

Original file line number	Diff line number	Diff line change
`@@ -612,7 +612,7 @@ static DEVICE_API(uart, uart_bflb_driver_api) = {`
`612`	`612`	`.base_reg = DT_INST_REG_ADDR(instance), \`
`613`	`613`	`\`
`614`	`614`	`.bit_order = UART_MSB_FIRST, \`
`615`		`- .tx_fifo_threshold = 8, \`
	`615`	`+ .tx_fifo_threshold = 16, \`
`616`	`616`	`.rx_fifo_threshold = 0, \`
`617`	`617`	`BFLB_UART_IRQ_HANDLER_FUNC(instance) \`
`618`	`618`	`}; \`