diff options
| author | Jungseung Lee <js07.lee@samsung.com> | 2020-04-02 21:10:22 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-04-03 14:55:55 +0100 |
| commit | 61249ce08ee9d031070281dbf36871f1c794abb8 (patch) | |
| tree | a56b69d62c597dfb80f8fc8ac2f7c6b095544dc3 /drivers/spi/spi-ep93xx.c | |
| parent | ebb3b9a92ba98efa8d0525367e653d5ee6630c1b (diff) | |
spi: spi-ep93xx: fix wrong SPI mode selection
The mode bits on control register 0 are in a different order compared
to the spi mode define values. Thus, in the current code, it fails to
set the correct SPI mode selection. Fix it.
Signed-off-by: Jungseung Lee <js07.lee@samsung.com>
Link: https://lore.kernel.org/r/20200402121022.9976-1-js07.lee@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-ep93xx.c')
| -rw-r--r-- | drivers/spi/spi-ep93xx.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c index 4e1ccd4e52b6..8c854b187b1d 100644 --- a/drivers/spi/spi-ep93xx.c +++ b/drivers/spi/spi-ep93xx.c @@ -31,7 +31,8 @@ #include <linux/platform_data/spi-ep93xx.h> #define SSPCR0 0x0000 -#define SSPCR0_MODE_SHIFT 6 +#define SSPCR0_SPO BIT(6) +#define SSPCR0_SPH BIT(7) #define SSPCR0_SCR_SHIFT 8 #define SSPCR1 0x0004 @@ -159,7 +160,10 @@ static int ep93xx_spi_chip_setup(struct spi_master *master, return err; cr0 = div_scr << SSPCR0_SCR_SHIFT; - cr0 |= (spi->mode & (SPI_CPHA | SPI_CPOL)) << SSPCR0_MODE_SHIFT; + if (spi->mode & SPI_CPOL) + cr0 |= SSPCR0_SPO; + if (spi->mode & SPI_CPHA) + cr0 |= SSPCR0_SPH; cr0 |= dss; dev_dbg(&master->dev, "setup: mode %d, cpsr %d, scr %d, dss %d\n", |