Hi Fabio, On Thu, Dec 18, 2025 at 08:06:25AM -0300, Fabio Estevam wrote: > Document the optional nxp,enable-termination-resistor property for the > i.MX LVDS display bridge. > > This boolean property indicates that the built-in 100 Ohm termination > resistor on the LVDS output is enabled. It is controlled via the HS_EN > bit in the LVDS_CTRL register. Enabling the resistor can improve LVDS > signal quality and may prevent visual artifacts on some boards, but > increases the power consumption. > > Signed-off-by: Fabio Estevam <[email protected]> > Reviewed-by: Krzysztof Kozlowski <[email protected]> > --- > Changes since v1: > - Change the property name to nxp,enable-termination-resistor (Frank). > > .../devicetree/bindings/display/bridge/fsl,ldb.yaml | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml > b/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml > index 07388bf2b90d..6bc786204e65 100644 > --- a/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml > +++ b/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml > @@ -35,6 +35,15 @@ properties: > - const: ldb > - const: lvds > > + nxp,enable-termination-resistor: > + type: boolean > + description: > + Indicates that the built-in 100 Ohm termination resistor on the LVDS > + output is enabled. This property is optional and controlled via the > + HS_EN bit in the LVDS_CTRL register. Enabling it can improve signal > + quality and prevent visual artifacts on some boards, but increases > + power consumption.
i.MX6SX doesn't have the LVDS_CTRL register and the HS_EN bit, so this property should be limited to i.MX8MP LDB and i.MX93 LDB. > + > ports: > $ref: /schemas/graph.yaml#/properties/ports > -- Regards, Liu Ying
