From nobody Fri Dec 19 17:18:18 2025 Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B98AC286D79; Sun, 6 Jul 2025 17:30:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.21.23.139 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751823014; cv=none; b=E/xr+MJfyRM28EwwP3ETjjcM0syEfdmoBBwLLqwWGCgDrvfNIo8G8NUgHCAtvBNXT/WbRgRz7rLrcYQ0zk2cuG69zvlu/NNNYCabjK33WeHtwaoQu4Uiwiwi6aRnlD3i/Wz4MQsN6rn429Nh+G2YsyYcyEj++UsHiz0Iz0IXCLw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751823014; c=relaxed/simple; bh=oChcwplCN0suk6lHWq6XWl/N6zCbWSAQbXpXzN4LkkE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=FlT3swOB/UnNUmfspqagc6/cDDQ3cyV3QkulUHiVizrV0XhoyIfC9HVuCzcWj50GWBnuNCqgxcjoyA3hYjhYSImBAAaes+nUYVvDh3x//Cs/quBl4krhzpTlPB02NydmECmu5YfkkmLCxrs2MQ1MsTz+ptuxhKWpGKfDdDRCRFI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org; spf=pass smtp.mailfrom=disroot.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b=PD5G3p64; arc=none smtp.client-ip=178.21.23.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=disroot.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b="PD5G3p64" Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 0B68525D7F; Sun, 6 Jul 2025 19:30:10 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id 7gwBGOvTxX10; Sun, 6 Jul 2025 19:30:09 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1751823009; bh=oChcwplCN0suk6lHWq6XWl/N6zCbWSAQbXpXzN4LkkE=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=PD5G3p64ULwvpSu66WVHHVAgI81CdxKe8wQbB0nrScjLZ8AzFAMltgZbiad/7HVdV c+iZnzeiLxG5XiPK68q0zur+edJ3P+mADB/d56iVtHbqIryK827N9m7vpCIYKhahuQ 2am4ExOUsE77rOe6hqgE+Vggg5oQzh7+fEoFeS50XLQ/UofQGueJQIFad5R/Cx+yAO UxB/wCQDBpMqD9b/wf1tNcatpMNfer8IjuEBawuaNeS0asaakJdPGPtITjiua4rPUU HckcMdpkk9ap5//cc9Zkdf2fToEGAstgM+1RUqGkdRunzsuvbGzgn2APsTAXo+N0W9 gFEU0k/acWhIg== From: Kaustabh Chakraborty Date: Sun, 06 Jul 2025 22:59:45 +0530 Subject: [PATCH v4 1/2] dt-bindings: display: samsung,exynos7-decon: document iommus, memory-region, and ports Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250706-exynosdrm-decon-v4-1-735fd215f4b3@disroot.org> References: <20250706-exynosdrm-decon-v4-0-735fd215f4b3@disroot.org> In-Reply-To: <20250706-exynosdrm-decon-v4-0-735fd215f4b3@disroot.org> To: Inki Dae , Seung-Woo Kim , Kyungmin Park , David Airlie , Simona Vetter , Krzysztof Kozlowski , Alim Akhtar , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Conor Dooley , Ajay Kumar , Akshu Agrawal , Krzysztof Kozlowski , Conor Dooley Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Kaustabh Chakraborty X-Developer-Signature: v=1; a=ed25519-sha256; t=1751822991; l=1983; i=kauschluss@disroot.org; s=20250202; h=from:subject:message-id; bh=oChcwplCN0suk6lHWq6XWl/N6zCbWSAQbXpXzN4LkkE=; b=QTmWHnA11sNP8XEsfDTBxLU0bIaujjqcVMgDPt2eNUJ6zRtTgzfMTVb5/FKagmo4PY9yuIt0Z h7w03bs+hqbBKkqI0tIDmiVOvAcEzChrFPzdFQvcDhY9DoxhEedLUXp X-Developer-Key: i=kauschluss@disroot.org; a=ed25519; pk=h2xeR+V2I1+GrfDPAhZa3M+NWA0Cnbdkkq1bH3ct1hE= Similar to FIMD and Exynos5433's DECON, the Exynos7 DECON hardware: - May optionally require an IOMMU to initialize a display region. - Outputs image data to another block, say an MIC or a DSI master. If an IOMMU is present, it may also require to access the reserved framebuffer region. Document these bindings in the devicetree schema. Signed-off-by: Kaustabh Chakraborty Reviewed-by: Krzysztof Kozlowski --- .../display/samsung/samsung,exynos7-decon.yaml | 21 +++++++++++++++++= ++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/devicetree/bindings/display/samsung/samsung,exyn= os7-decon.yaml b/Documentation/devicetree/bindings/display/samsung/samsung,= exynos7-decon.yaml index 53916e4c95d8c0369138941a556c23f5d42fbd39..14b954718008e06aa1627fcd116= a61927ce29e99 100644 --- a/Documentation/devicetree/bindings/display/samsung/samsung,exynos7-dec= on.yaml +++ b/Documentation/devicetree/bindings/display/samsung/samsung,exynos7-dec= on.yaml @@ -80,6 +80,21 @@ properties: - const: vsync - const: lcd_sys =20 + iommus: + maxItems: 1 + + memory-region: + maxItems: 1 + description: + A phandle to a node describing a reserved framebuffer memory region. + For example, the splash memory region set up by the bootloader. + + port: + $ref: /schemas/graph.yaml#/properties/port + description: + Output port which is connected to either a Mobile Image Compressor + (MIC) or a DSI Master device. + power-domains: maxItems: 1 =20 @@ -92,6 +107,7 @@ required: - clock-names - interrupts - interrupt-names + - port - reg =20 additionalProperties: false @@ -118,4 +134,9 @@ examples: "decon0_vclk"; pinctrl-0 =3D <&lcd_clk &pwm1_out>; pinctrl-names =3D "default"; + port { + decon_to_dsi: endpoint { + remote-endpoint =3D <&dsi_to_decon>; + }; + }; }; --=20 2.49.0