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Wed, 29 Apr 2026 10:00:20 -0700 (PDT) Received: from iku.Home ([2a06:5906:61b:2d00:212b:3a69:4f2c:3897]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48a820c856dsm4809755e9.6.2026.04.29.10.00.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2026 10:00:19 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Biju Das , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Geert Uytterhoeven , Magnus Damm , Laurent Pinchart , dri-devel@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Fabrizio Castro , Tommaso Merciai , Lad Prabhakar Subject: [PATCH 1/4] dt-bindings: display: renesas, rzg2l-du: Add RZ/T2H and RZ/N2H support Date: Wed, 29 Apr 2026 18:00:09 +0100 Message-ID: <20260429170012.366537-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260429170012.366537-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20260429170012.366537-1-prabhakar.mahadev-lad.rj@bp.renesas.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Lad Prabhakar Document the Display Unit (DU) support for the RZ/T2H and RZ/N2H SoCs. The DU block on RZ/T2H is functionally equivalent to the RZ/G2UL DU and supports the DPI interface, but includes SoC-specific register differences. Add a dedicated compatible string to represent this variant. As the DU implementation on RZ/N2H matches RZ/T2H, describe it using an RZ/N2H specific compatible string with the RZ/T2H compatible as fallback. Unlike other DU variants which use a multi-port model, the RZ/T2H and RZ/N2H DU has a single output and is modelled using a single port node with one endpoint. Add a port property to support this and update the allOf constraints accordingly. Signed-off-by: Lad Prabhakar --- .../bindings/display/renesas,rzg2l-du.yaml | 24 +++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml index 2cc66dcef870..45678d536a75 100644 --- a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml +++ b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml @@ -21,6 +21,7 @@ properties: - renesas,r9a07g043u-du # RZ/G2UL - renesas,r9a07g044-du # RZ/G2{L,LC} - renesas,r9a09g057-du # RZ/V2H(P) + - renesas,r9a09g077-du # RZ/T2H - items: - enum: - renesas,r9a07g054-du # RZ/V2L @@ -28,6 +29,9 @@ properties: - items: - const: renesas,r9a09g056-du # RZ/V2N - const: renesas,r9a09g057-du # RZ/V2H(P) fallback + - items: + - const: renesas,r9a09g087-du # RZ/N2H + - const: renesas,r9a09g077-du # RZ/T2H fallback reg: maxItems: 1 @@ -53,6 +57,10 @@ properties: power-domains: maxItems: 1 + port: + $ref: /schemas/graph.yaml#/properties/port + description: Single output port for single-output DU variants. + ports: $ref: /schemas/graph.yaml#/properties/ports description: | @@ -83,9 +91,7 @@ required: - interrupts - clocks - clock-names - - resets - power-domains - - ports - renesas,vsps additionalProperties: false @@ -137,6 +143,20 @@ allOf: required: - port@0 + - if: + properties: + compatible: + contains: + const: renesas,r9a09g077-du + then: + properties: + resets: false + required: + - port + else: + required: + - resets + - ports examples: # RZ/G2L DU -- 2.54.0