diff options
| author | Vikas Manocha <vikas.manocha@st.com> | 2017-05-28 12:55:12 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-06-09 11:23:59 -0400 |
| commit | 6c0c3ce8aa794e972ef173694e148ddc9b7d6bcb (patch) | |
| tree | c55f7dd57452b9896374a0642bfaf9aadad3e6b1 /drivers/serial | |
| parent | c6d9e9dbc3d02c03ea1f6671034317593a2ea4ff (diff) | |
serial: stm32f7: disable overrun
With overrun enabled, serial port console freezes & stops receiving data with
overun error if we keep sending data.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/serial_stm32x7.c | 3 | ||||
| -rw-r--r-- | drivers/serial/serial_stm32x7.h | 2 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/serial/serial_stm32x7.c b/drivers/serial/serial_stm32x7.c index bdabf87e50..483e4ba67d 100644 --- a/drivers/serial/serial_stm32x7.c +++ b/drivers/serial/serial_stm32x7.c @@ -93,6 +93,9 @@ static int stm32_serial_probe(struct udevice *dev) } #endif + /* Disable usart-> disable overrun-> enable usart */ + clrbits_le32(&usart->cr1, USART_CR1_RE | USART_CR1_TE | USART_CR1_UE); + setbits_le32(&usart->cr3, USART_CR3_OVRDIS); setbits_le32(&usart->cr1, USART_CR1_RE | USART_CR1_TE | USART_CR1_UE); return 0; diff --git a/drivers/serial/serial_stm32x7.h b/drivers/serial/serial_stm32x7.h index 6190d67406..8c025485cd 100644 --- a/drivers/serial/serial_stm32x7.h +++ b/drivers/serial/serial_stm32x7.h @@ -27,6 +27,8 @@ struct stm32_usart { #define USART_CR1_TE (1 << 3) #define USART_CR1_UE (1 << 0) +#define USART_CR3_OVRDIS (1 << 12) + #define USART_SR_FLAG_RXNE (1 << 5) #define USART_SR_FLAG_TXE (1 << 7) |