18.01.2022 05:30, Sasha Levin пишет: > From: Dmitry Osipenko <digetx@xxxxxxxxx> > > [ Upstream commit 0c921b6d4ba06bc899fd84d3ce1c1afd3d00bc1c ] > > Asus Transformer TF700T is a Tegra30 tablet device which uses RGB->DSI > bridge that requires a precise clock rate in order to operate properly. > Tegra30 has a dedicated PLL for each display controller, hence the PLL > rate can be changed freely. Allow PLL rate changes on Tegra30+ for RGB > output. Configure the clock rate before display controller is enabled > since DC itself may be running off this PLL and it's not okay to change > the rate of the active PLL that doesn't support dynamic frequency > switching since hardware will hang. > > Tested-by: Maxim Schwalm <maxim.schwalm@xxxxxxxxx> #TF700T > Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> > Signed-off-by: Thierry Reding <treding@xxxxxxxxxx> > Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> > --- > drivers/gpu/drm/tegra/dc.c | 27 ++++++++++++-------- > drivers/gpu/drm/tegra/dc.h | 1 + > drivers/gpu/drm/tegra/rgb.c | 49 +++++++++++++++++++++++++++++++++++-- > 3 files changed, 65 insertions(+), 12 deletions(-) Hi, This patch shouldn't be ported to any stable kernel because h/w that needs this patch was just merged to the 5.17.
