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arch/arm64/imx9: Reset rx fifo in mode change

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instead of looping just reset rxfifo

Signed-off-by: Jouni Ukkonen <jouni.ukkonen@unikie.com>
This commit is contained in:
Jouni Ukkonen
2024-11-07 10:13:45 +02:00
committed by Xiang Xiao
parent 5609c3d416
commit ed8bfdd26a
1 changed files with 3 additions and 6 deletions
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arch/arm64/src/imx9/imx9_lpspi.c
+3 -6
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@@ -1021,13 +1021,10 @@ static void imx9_lpspi_setmode(struct spi_dev_s *dev, enum spi_mode_e mode)
imx9_lpspi_modifytcr(priv, clrbits, setbits); imx9_lpspi_modifytcr(priv, clrbits, setbits);
while ((imx9_lpspi_getreg32(priv, IMX9_LPSPI_RSR_OFFSET) & /* Reset SPI read FIFO */
LPSPI_RSR_RXEMPTY) != LPSPI_RSR_RXEMPTY)
{
/* Flush SPI read FIFO */
imx9_lpspi_getreg32(priv, IMX9_LPSPI_RSR_OFFSET); imx9_lpspi_modifyreg32(priv, IMX9_LPSPI_CR_OFFSET, 0,
} LPSPI_CR_RRF);
/* Save the mode so that subsequent re-configurations will be faster */ /* Save the mode so that subsequent re-configurations will be faster */