Re: [PATCH 1/2] drm/dp/mst: Sideband message transaction to power up/down nodes
On 2017-09-05 18:26, Dhinakaran Pandiyan wrote: > The POWER_DOWN_PHY and POWER_UP_PHY sideband message transactions allow > the source to reqest any node in a mst path or a whole path to be > powered down or up. This allows drivers to target a specific sink in the > MST topology, an improvement over just power managing the imediate > downstream device. Secondly, since the request-reply protocol waits for an > ACK, we can be sure that a downstream sink has enough time to respond to a > power up/down request. > > Cc: Lyude > Cc: Ville Syrjälä > Cc: Harry Wentland > Signed-off-by: Dhinakaran Pandiyan Tested-by: Stefan Assmann ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH 2/2] drm/i915/mst: Use MST sideband message transaction for dpms
On 2017-09-05 18:26, Dhinakaran Pandiyan wrote: > Use the POWER_DOWN_PHY and POWER_UP_PHY sideband message trasactions to > set power states for downstream sinks. Apart from giving us the ability > to set power state for individual sinks, this fixes the below test for > me > > $ xrandr --display :0 --output DP-2-2-8 --off > $ xrandr --display :0 --output DP-2-2-1 --off > $ xrandr --display :0 --output DP-2-2-8 --auto #Black screen > $ xrandr --display :0 --output DP-2-2-1 --auto > > Cc: Ville Syrjälä > Cc: Lyude > Signed-off-by: Dhinakaran Pandiyan Tested-by: Stefan Assmann ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
