Hi, On Tue, Sep 16, 2025 at 7:22 AM Emanuele Ghidoli <ghidoliemanu...@gmail.com> wrote: > > From: Emanuele Ghidoli <emanuele.ghid...@toradex.com> > > The component datasheet recommends, to reduce power consumption, > transitioning to LP mode on every video line. > > Enable the MIPI_DSI_MODE_VIDEO_NO_HFP and MIPI_DSI_MODE_VIDEO_NO_HBP > flags so that the bridge can enter LP mode during the horizontal front > porch and back porch periods. > > Signed-off-by: Emanuele Ghidoli <emanuele.ghid...@toradex.com> > --- > Cc: Douglas Anderson <diand...@chromium.org> > Cc: Andrzej Hajda <andrzej.ha...@intel.com> > Cc: Neil Armstrong <neil.armstr...@linaro.org> > Cc: Robert Foss <rf...@kernel.org> > Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com> > Cc: Jonas Karlman <jo...@kwiboo.se> > Cc: Jernej Skrabec <jernej.skra...@gmail.com> > Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com> > Cc: Maxime Ripard <mrip...@kernel.org> > Cc: Thomas Zimmermann <tzimmerm...@suse.de> > Cc: David Airlie <airl...@gmail.com> > Cc: Simona Vetter <sim...@ffwll.ch> > Cc: Jayesh Choudhary <j-choudh...@ti.com> > Cc: <dri-devel@lists.freedesktop.org> > Cc: <linux-ker...@vger.kernel.org> > --- > drivers/gpu/drm/bridge/ti-sn65dsi86.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-)
I put this on a sc7180-trogdor based Chromebook and the display no longer comes up. I don't personally know the MIPI side of the spec too well so I have no idea why that would be. -Doug
