From 2ae03ce28679e45dc3c5cb7b93a8507edfe313b0 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 20 Jan 2026 20:19:29 -0300 Subject: [PATCH] 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 --- .../bindings/display/bridge/fsl,ldb.yaml | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml b/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml index 07388bf2b90d..828b7a40e9b6 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: