On 6/7/23 13:55, Leonard Göhrs wrote: > Some MIPI DBI panels support a three wire mode (clock, chip select, > bidirectional data) that can be used to ask the panel if it is already set > up by e.g. the bootloader and can thus skip the initialization. > This enables a flicker-free boot. > > Signed-off-by: Leonard Göhrs <l.goehrs@xxxxxxxxxxxxxx> > --- > .../devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml b/Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml > index c07da1a9e6288..2f0238b770eba 100644 > --- a/Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml > +++ b/Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml > @@ -87,6 +87,8 @@ properties: > Logic level supply for interface signals (Vddi). > No need to set if this is the same as power-supply. > > + spi-3wire: true > + I don't think this should be added here. spi-cpha and spi-cpol are also supported but they are not mentioned. Instead those are documented in bindings/spi/spi-controller.yaml. Why they're not documented in bindings/spi/spi-peripheral-props.yaml instead which this binding has a ref to, I have no idea. Noralf. > required: > - compatible > - reg
