Displays that are connected to the same SPI bus may share the D/C GPIO. Use GPIOD_FLAGS_BIT_NONEXCLUSIVE to allow access to the same GPIO for multiple panel-mipi-dbi instances. Exclusive access to the GPIO during transfers is ensured by the locking in drm_mipi_dbi.c. Signed-off-by: Otto Pflüger <otto.pflueger@xxxxxxxxx> --- drivers/gpu/drm/tiny/panel-mipi-dbi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tiny/panel-mipi-dbi.c b/drivers/gpu/drm/tiny/panel-mipi-dbi.c index eb9f13f18a02..e616e3890043 100644 --- a/drivers/gpu/drm/tiny/panel-mipi-dbi.c +++ b/drivers/gpu/drm/tiny/panel-mipi-dbi.c @@ -307,7 +307,8 @@ static int panel_mipi_dbi_spi_probe(struct spi_device *spi) if (IS_ERR(dbi->reset)) return dev_err_probe(dev, PTR_ERR(dbi->reset), "Failed to get GPIO 'reset'\n"); - dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW); + dc = devm_gpiod_get_optional(dev, "dc", + GPIOD_OUT_LOW | GPIOD_FLAGS_BIT_NONEXCLUSIVE); if (IS_ERR(dc)) return dev_err_probe(dev, PTR_ERR(dc), "Failed to get GPIO 'dc'\n"); -- 2.39.1
