Re: [PATCH v2 1/2] dt-bindings: display: bridge: Document Renesas RZ/G3L LVDS encoder

[Tommaso Merciai]

Hi Biju,
Thanks for your patch.

On Sun, May 24, 2026 at 08:44:50PM +0100, Biju wrote:
> From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> 
> Document the LVDS encoder IP found on the RZ/G3L SoC. It supports
> single-link mode. LVDS and the DSI interface share a peripheral clock and
> the MIPI_DSI_PRESET_N reset signal. However, the LVDS module cannot be
> used at the same time as MIPI-DSI.
> 

Same here, this should be v3 instead of v2.
Apart from that patch LGTM.

Reviewed-by: Tommaso Merciai <tommaso.merciai.xr@xxxxxxxxxxxxxx>

Kind Regards,
Tommaso

> Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@xxxxxxxxxxxxxx>
> Acked-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> ---
> v2->v3:
>  * No change.
> v1->v2:
>  * Collected tag.
> ---
>  .../bridge/renesas,r9a08g046-lvds.yaml        | 128 ++++++++++++++++++
>  1 file changed, 128 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/renesas,r9a08g046-lvds.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,r9a08g046-lvds.yaml b/Documentation/devicetree/bindings/display/bridge/renesas,r9a08g046-lvds.yaml
> new file mode 100644
> index 000000000000..b1f6d020ae7b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/renesas,r9a08g046-lvds.yaml
> @@ -0,0 +1,128 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/renesas,r9a08g046-lvds.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas RZ/G3L LVDS Encoder
> +
> +maintainers:
> +  - Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> +  - Tommaso Merciai <tommaso.merciai.xr@xxxxxxxxxxxxxx>
> +
> +description: |
> +  This binding describe the LVDS encoder embedded in the Renesas RZ/G3L
> +  SoC. The encoder can operate in LVDS Single-link mode with 4 lanes
> +  (Data) + 1 lane (Clock).
> +
> +properties:
> +  compatible:
> +    const: renesas,r9a08g046-lvds
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: Peripheral clock
> +      - description: PHY clock
> +      - description: Dot clock
> +
> +  clock-names:
> +    items:
> +      - const: pclk
> +      - const: phyclk
> +      - const: dotclk
> +
> +  resets:
> +    items:
> +      - description: LVDS_RESET_N
> +      - description: MIPI_DSI_PRESET_N
> +      - description: MIPI_DSI_CMN_RSTB
> +      - description: MIPI_DSI_ARESET_N
> +
> +  reset-names:
> +    items:
> +      - const: lvdrst
> +      - const: prst
> +      - const: rst
> +      - const: arst
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Input channel, directly connected to the Display Unit.
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: |
> +          Output channel, directly connected to the LVDS panel or bridge.
> +
> +    required:
> +      - port@0
> +      - port@1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - resets
> +  - reset-names
> +  - power-domains
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/renesas,r9a08g046-cpg.h>
> +
> +    lvds-cmn@108a0000 {
> +        compatible = "renesas,r9a08g046-lvds-cmn",
> +                     "simple-mfd", "syscon";
> +        reg = <0x108a0000 0x10000>;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +
> +        lvds0: lvds@10 {
> +            compatible = "renesas,r9a08g046-lvds";
> +            reg = <0x10 0x8>;
> +            clocks = <&cpg CPG_MOD R9A08G046_MIPI_DSI_PCLK>,
> +                     <&cpg CPG_MOD R9A08G046_LVDS_PLLCLK>,
> +                     <&cpg CPG_MOD R9A08G046_LVDS_CLK_DOT0>;
> +            clock-names = "pclk", "phyclk", "dotclk";
> +            resets = <&cpg R9A08G046_LVDS_RESET_N>,
> +                     <&cpg R9A08G046_MIPI_DSI_PRESET_N>,
> +                     <&cpg R9A08G046_MIPI_DSI_CMN_RSTB>,
> +                     <&cpg R9A08G046_MIPI_DSI_ARESET_N>;
> +            reset-names = "lvdrst", "prst", "rst", "arst";
> +            power-domains = <&cpg>;
> +
> +            ports {
> +                #address-cells = <1>;
> +                #size-cells = <0>;
> +
> +                port@0 {
> +                    reg = <0>;
> +                    lvds0_in: endpoint {
> +                        remote-endpoint = <&du_out_lvds0>;
> +                    };
> +                };
> +
> +                port@1 {
> +                    reg = <1>;
> +                    lvds0_out: endpoint {
> +                        remote-endpoint = <&panel_in>;
> +                    };
> +                };
> +            };
> +        };
> +    };
> +...
> -- 
> 2.43.0
>