From nobody Mon Oct 6 11:51:30 2025 Received: from srv01.abscue.de (abscue.de [89.58.28.240]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9926F2EBBA7; Tue, 22 Jul 2025 14:41:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=89.58.28.240 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753195315; cv=none; b=Hl9y2BDT1968lwkebeGCLltu7skiQTRWN7B/IkW7U5a/8nW3zOaXr325+Hw0SKKA/v0LJ3m+d+Hc9VIZIWds5lFJX7IX6ih2J4Xy4YWnQjy2mZ1lQTcAYc0SLVyjgE6sGe1zwA1mxApkWGOXD+4rxTeOeqmSoF01ddhCWHx9ymU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753195315; c=relaxed/simple; bh=GQtjtwhiAHhxsilOFnb33SyQQ7Dk0+tF+I/+ltt/DYs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=DO41n6uGjSmd1/0Zf0y2U5nEXDyAXLr8OFUG80p6OV7PIEPbqn/fkr+WJiBPfOEg16i3sgoas0qEoNlX9iVKRT9LQ/mf1PE/ZYERANrF8e9FY+i2U2py/FbP+FFgP+1BFAcZ9+7Anwf0WegGDRbrzt01u+fyTwvoNpABsuo+uao= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=abscue.de; spf=pass smtp.mailfrom=abscue.de; arc=none smtp.client-ip=89.58.28.240 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=abscue.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=abscue.de Received: from srv01.abscue.de (localhost [127.0.0.1]) by spamfilter.srv.local (Postfix) with ESMTP id 967EE1C06A3; Tue, 22 Jul 2025 16:41:37 +0200 (CEST) X-Spam-Level: Received: from fluffy-mammal.metal.fwg-cag.de (unknown [IPv6:2001:9e8:cdcb:3c00:ce39:8bff:5db4:1ef8]) by srv01.abscue.de (Postfix) with ESMTPSA id BCD851C0628; Tue, 22 Jul 2025 16:41:36 +0200 (CEST) From: =?utf-8?q?Otto_Pfl=C3=BCger?= Date: Tue, 22 Jul 2025 16:41:04 +0200 Subject: [PATCH v2 02/15] dt-bindings: display: sprd: add memory-region property 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: <20250722-ums9230-drm-v2-2-054276ec213d@abscue.de> References: <20250722-ums9230-drm-v2-0-054276ec213d@abscue.de> In-Reply-To: <20250722-ums9230-drm-v2-0-054276ec213d@abscue.de> To: David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Orson Zhai , Baolin Wang , Chunyan Zhang , Kevin Tang Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Otto_Pfl=C3=BCger?= X-Mailer: b4 0.14.2 Explain that the DPU node supports a memory-region property that can be used to describe an initial framebuffer set up by the bootloader, usually in order to create a passthrough mapping for this framebuffer when the IOMMU is used. Signed-off-by: Otto Pfl=C3=BCger Acked-by: Krzysztof Kozlowski --- .../devicetree/bindings/display/sprd/sprd,sharkl3-dpu.yaml | 8 ++++= ++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dp= u.yaml b/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dpu.ya= ml index 7f34652080b22e7b7072a709fd390a72375110ef..fa9ad2600f150e1023606898322= a1a7b4675bab3 100644 --- a/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dpu.yaml +++ b/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dpu.yaml @@ -48,6 +48,14 @@ properties: iommus: maxItems: 1 =20 + memory-region: + maxItems: 1 + description: + A phandle to the framebuffer region configured by the bootloader. Th= is + can be used together with an iommu-addresses property on the reserved + memory region to create an initial passthrough mapping for the boot + splash framebuffer. + port: type: object description: --=20 2.50.0