The panel can be connected using 3WIRE, then it is
however necessary that the flag SPI_3WIRE is preserved
on the device, as we set this from generic device tree
parsing code (or similar). Just |= the SPI mode.
Cc: Stephan Gerhold <stephan@xxxxxxxxxxx>
Cc: Paweł Chmiel <pawel.mikolaj.chmiel@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c b/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c
index e47647f418ff..b1adf8f89c62 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c
@@ -72,7 +72,8 @@ static int s6e63m0_spi_probe(struct spi_device *spi)
int ret;
spi->bits_per_word = 9;
- spi->mode = SPI_MODE_3;
+ /* Preserve e.g. SPI_3WIRE setting */
+ spi->mode |= SPI_MODE_3;
ret = spi_setup(spi);
if (ret < 0) {
dev_err(dev, "spi setup failed.\n");
--
2.26.2
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