serial: stm32x7: add fifo support for STM32H7
Add fifo mode support for rx and tx.
As only STM32H7 supports this feature, add has_fifo flag
to uart configuration to use fifo only when possible.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/drivers/serial/serial_stm32x7.c b/drivers/serial/serial_stm32x7.c
index 81a2308..19697e3 100644
--- a/drivers/serial/serial_stm32x7.c
+++ b/drivers/serial/serial_stm32x7.c
@@ -117,6 +117,8 @@
BIT(uart_enable_bit));
if (plat->uart_info->has_overrun_disable)
setbits_le32(base + CR3_OFFSET(stm32f4), USART_CR3_OVRDIS);
+ if (plat->uart_info->has_fifo)
+ setbits_le32(base + CR1_OFFSET(stm32f4), USART_CR1_FIFOEN);
setbits_le32(base + CR1_OFFSET(stm32f4), USART_CR1_RE | USART_CR1_TE |
BIT(uart_enable_bit));
@@ -125,8 +127,8 @@
#if CONFIG_IS_ENABLED(OF_CONTROL)
static const struct udevice_id stm32_serial_id[] = {
- { .compatible = "st,stm32f7-uart", .data = (ulong)&stm32x7_info},
- { .compatible = "st,stm32h7-uart", .data = (ulong)&stm32x7_info},
+ { .compatible = "st,stm32f7-uart", .data = (ulong)&stm32f7_info},
+ { .compatible = "st,stm32h7-uart", .data = (ulong)&stm32h7_info},
{}
};