From: Fabio Estevam Date: Tue, 20 Jan 2026 23:19:29 +0000 (-0300) Subject: dt-bindings: display: bridge: ldb: Document nxp, enable-termination-resistor X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ae03ce28679e45dc3c5cb7b93a8507edfe313b0;p=thirdparty%2Fkernel%2Flinux.git dt-bindings: display: bridge: ldb: Document nxp, enable-termination-resistor 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 Acked-by: Rob Herring (Arm) Signed-off-by: Liu Ying Link: https://lore.kernel.org/r/20260120231930.2782444-1-festevam@gmail.com --- diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml b/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml index 07388bf2b90df..828b7a40e9b6c 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. + ports: $ref: /schemas/graph.yaml#/properties/ports @@ -74,6 +83,15 @@ allOf: properties: port@2: false + - if: + properties: + compatible: + contains: + const: fsl,imx6sx-ldb + then: + properties: + nxp,enable-termination-resistor: false + additionalProperties: false examples: