On Tue, Jun 24, 2014 at 4:18 PM, Andreas Färber <afaerber@xxxxxxx> wrote: > Am 23.06.2014 03:21, schrieb Andreas Färber: >> The display goes dark unfortunately (drm bridge series not yet tested), >> but I am able to log in via ssh over USB ethernet adapter okay. > > Tracked this down to the dp-controller@145B0000 node: The pinctrl seems > irrelevant, only commenting out the whole node helps keep the display. > That is, hdmi and fimd nodes don't interfere. > > Adding a pwm backlight node like on snow did not help. On this board, the backlight is driven by the Parade PS8622 DP-to-LVDS bridge (rather than a SoC PWM as on Snow). You need to ensure that the PS8622 GPIOs (Reset/Sleep) are correctly driven oh, it seems that the PS8622 DRM bridge driver is still in-flight : https://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg32243.html > If it's supposed > to work from GNOME's display brightness slider, it doesn't seem to work. > The 3.8 tree had no backlight node at all. > > Andreas > > -- > SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany > GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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