18.01.2022 12:37, Dmitry Osipenko пишет: > 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. * support of h/w that needs..
