diff options
| author | Esben Haabendal <eha@deif.com> | 2018-06-20 10:34:39 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-06-20 16:48:12 +0300 |
| commit | 51d583ae7792cb11e952124cedc0e06e7b55d031 (patch) | |
| tree | 7290a32cfeee80e0d836a068610a62fa2cdbef26 /drivers/spi | |
| parent | 58ba07ec79e62054dd2b2f1cea082a542aa01c44 (diff) | |
| download | linux-51d583ae7792cb11e952124cedc0e06e7b55d031.tar.xz | |
spi: spi-fsl-dspi: Framesize control for XSPI mode
Signed-off-by: Esben Haabendal <eha@deif.com>
Acked-by: Martin Hundebøll <martin@geanix.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-fsl-dspi.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 3e9dd645ee54..ba83ff4512c9 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -119,6 +119,9 @@ #define SPI_FRAME_BITS_16 SPI_CTAR_FMSZ(0xf) #define SPI_FRAME_BITS_8 SPI_CTAR_FMSZ(0x7) +#define SPI_FRAME_EBITS(bits) SPI_CTARE_FMSZE(((bits) - 1) >> 4) +#define SPI_FRAME_EBITS_MASK SPI_CTARE_FMSZE(1) + /* Register offsets for regmap_pushr */ #define PUSHR_CMD 0x0 #define PUSHR_TX 0x2 @@ -662,6 +665,10 @@ static int dspi_transfer_one_message(struct spi_master *master, regmap_write(dspi->regmap, SPI_CTAR(0), dspi->cur_chip->ctar_val | SPI_FRAME_BITS(transfer->bits_per_word)); + if (dspi->devtype_data->xspi_mode) + regmap_write(dspi->regmap, SPI_CTARE(0), + SPI_FRAME_EBITS(transfer->bits_per_word) + | SPI_CTARE_DTCP(1)); trans_mode = dspi->devtype_data->trans_mode; switch (trans_mode) { @@ -922,6 +929,9 @@ static void dspi_init(struct fsl_dspi *dspi) { regmap_write(dspi->regmap, SPI_MCR, SPI_MCR_MASTER | SPI_MCR_PCSIS); regmap_write(dspi->regmap, SPI_SR, SPI_SR_CLEAR); + if (dspi->devtype_data->xspi_mode) + regmap_write(dspi->regmap, SPI_CTARE(0), + SPI_CTARE_FMSZE(0) | SPI_CTARE_DTCP(1)); } static int dspi_probe(struct platform_device *pdev) |