On Tue, Jun 04, 2024 at 11:42:31AM +0200, Alexander Stein wrote: > Hi Marek, > > Am Freitag, 31. Mai 2024, 22:42:03 CEST schrieb Marek Vasut: > > Document default DP port preemphasis configurable via new DT property > > "toshiba,pre-emphasis". This is useful in case the DP link properties > > are known and starting link training from preemphasis setting of 0 dB > > is not useful. The preemphasis can be set separately for both DP lanes > > in range 0=0dB, 1=3.5dB, 2=6dB . > > > > Signed-off-by: Marek Vasut <marex@xxxxxxx> > > --- > > Cc: Andrzej Hajda <andrzej.hajda@xxxxxxxxx> > > Cc: Conor Dooley <conor+dt@xxxxxxxxxx> > > Cc: Daniel Vetter <daniel@xxxxxxxx> > > Cc: David Airlie <airlied@xxxxxxxxx> > > Cc: Jernej Skrabec <jernej.skrabec@xxxxxxxxx> > > Cc: Jonas Karlman <jonas@xxxxxxxxx> > > Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx> > > Cc: Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx> > > Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx> > > Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> > > Cc: Maxime Ripard <mripard@xxxxxxxxxx> > > Cc: Neil Armstrong <neil.armstrong@xxxxxxxxxx> > > Cc: Rob Herring <robh@xxxxxxxxxx> > > Cc: Robert Foss <rfoss@xxxxxxxxxx> > > Cc: Thomas Zimmermann <tzimmermann@xxxxxxx> > > Cc: devicetree@xxxxxxxxxxxxxxx > > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx > > Cc: kernel@xxxxxxxxxxxxxxxxxx > > --- > > .../display/bridge/toshiba,tc358767.yaml | 18 ++++++++++++++++++ > > 1 file changed, 18 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.yaml b/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.yaml > > index 2ad0cd6dd49e0..dcf56e996ee22 100644 > > --- a/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.yaml > > +++ b/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.yaml > > @@ -98,6 +98,24 @@ properties: > > reference to a valid eDP panel input endpoint node. This port is > > optional, treated as DP panel if not defined > > > > + properties: > > + endpoint: > > + $ref: /schemas/media/video-interfaces.yaml# > > + unevaluatedProperties: false > > + > > + properties: > > + toshiba,pre-emphasis: > > + description: > > + Display port output Pre-Emphasis settings for both ports. > > Is this a property of the port or the endpoint? What's the difference? Either is the same data path. The preference is custom properties in endpoint node, not port nodes. Rob
