According to Atmel's guideline... http://www.at91.com/linux4sam/bin/view/Linux4SAM/UsingAtmelDRMDriver
the "fbdev emulation mode" could be set from kernel command line (LVDS-1:...) however, driver register it as DRM_MODE_CONNECTOR_Unknown connector.
Actually we using sama5d3x with LVDS cable so that below patch would be correct. But I don't know the other case such as HDMI, composite...
Do we need to consider using DT or auto-detection??
Signed-off-by: HyungJin Jung realbright@lgcns.com --- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c index 6119b50..da97efe --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c @@ -208,7 +208,7 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, &atmel_hlcdc_panel_connector_helper_funcs); ret = drm_connector_init(dev, &output->connector, &atmel_hlcdc_panel_connector_funcs, - DRM_MODE_CONNECTOR_Unknown); + DRM_MODE_CONNECTOR_LVDS); if (ret) goto err_encoder_cleanup;