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For CPU mode, because of the spi transfer len is in byte, so burst length should be configured as bits per byte * spi_imx->count. Signed-off-by: Carlos Song Reviewed-by: Clark Wang Fixes: e9b220aeacf1 ("spi: spi-imx: correctly configure burst length when using dma") Fixes: 5f66db08cbd3 ("spi: imx: Take in account bits per word instead of assuming 8-bits") --- Changes for V3: - include --- drivers/spi/spi-imx.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 546cdce525fc..2a1ae7b00760 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -21,7 +21,7 @@ #include #include #include - +#include #include #define DRIVER_NAME "spi_imx" @@ -660,15 +660,14 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx, << MX51_ECSPI_CTRL_BL_OFFSET; else { if (spi_imx->usedma) { - ctrl |= (spi_imx->bits_per_word * - spi_imx_bytes_per_word(spi_imx->bits_per_word) - 1) + ctrl |= (spi_imx->bits_per_word - 1) << MX51_ECSPI_CTRL_BL_OFFSET; } else { if (spi_imx->count >= MX51_ECSPI_CTRL_MAX_BURST) - ctrl |= (MX51_ECSPI_CTRL_MAX_BURST - 1) + ctrl |= (MX51_ECSPI_CTRL_MAX_BURST * BITS_PER_BYTE - 1) << MX51_ECSPI_CTRL_BL_OFFSET; else - ctrl |= (spi_imx->count * spi_imx->bits_per_word - 1) + ctrl |= (spi_imx->count * BITS_PER_BYTE - 1) << MX51_ECSPI_CTRL_BL_OFFSET; } }