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>
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2 changed files with 5 additions and 0 deletions
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@ -93,6 +93,9 @@ static int stm32_serial_probe(struct udevice *dev)
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}
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#endif
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/* Disable usart-> disable overrun-> enable usart */
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clrbits_le32(&usart->cr1, USART_CR1_RE | USART_CR1_TE | USART_CR1_UE);
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setbits_le32(&usart->cr3, USART_CR3_OVRDIS);
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setbits_le32(&usart->cr1, USART_CR1_RE | USART_CR1_TE | USART_CR1_UE);
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return 0;
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@ -27,6 +27,8 @@ struct stm32_usart {
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#define USART_CR1_TE (1 << 3)
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#define USART_CR1_UE (1 << 0)
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#define USART_CR3_OVRDIS (1 << 12)
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#define USART_SR_FLAG_RXNE (1 << 5)
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#define USART_SR_FLAG_TXE (1 << 7)
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