From nobody Sun Oct 5 18:19:57 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 CC18A2253A4; Thu, 31 Jul 2025 16:02:55 +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=1753977778; cv=none; b=fBsrl8Gc7BDWzqIxAgeqgdmnDLU0d5Gyw0U6dV2+VdRvbokgK7D5V8JRMpO6TSSrrLc8aUHzZvN28ZQjQm2qtkST00MePmr5GOLy5CQAPEEewAQgVzqoRQTBsxfkkaZafaYoV2QhqXgtkvG3vysRZd1FuL+zwd5SZAUQ3eNkcDo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753977778; c=relaxed/simple; bh=SxSoylqh2nQNMTD8ghVhZN6VNO53DKjHkG1IBEctzaY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GywnX2KpbGqi4Qp/nOhkuAfD+9WRkyjuYgdJuZblMVXV3acJk/JyZyTKjmaeq27Hf6rjE6SHgrs9ey/+YNZmI5YTQjajxuuDgZux7X+nSbnrr4ARDnfgLFuBSCJ9aZBv3jMd3bQqzc5YRrbIUzn0uXX1whymHSDIeeFAdJk1PmY= 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 8A7EA1C2718; Thu, 31 Jul 2025 17:52:55 +0200 (CEST) X-Spam-Level: Received: from fluffy-mammal.metal.fwg-cag.de (unknown [IPv6:2001:9e8:cdc9:0:1347:874c:9851:58c6]) by srv01.abscue.de (Postfix) with ESMTPSA id 274A41C2710; Thu, 31 Jul 2025 17:52:52 +0200 (CEST) From: =?utf-8?q?Otto_Pfl=C3=BCger?= Date: Thu, 31 Jul 2025 17:51:16 +0200 Subject: [PATCH v3 03/16] 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: <20250731-ums9230-drm-v3-3-06d4f57c4b08@abscue.de> References: <20250731-ums9230-drm-v3-0-06d4f57c4b08@abscue.de> In-Reply-To: <20250731-ums9230-drm-v3-0-06d4f57c4b08@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 , Liviu Dudau , Russell King , Eric Anholt , Kevin Tang Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Otto_Pfl=C3=BCger?= , Krzysztof Kozlowski 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. Acked-by: Krzysztof Kozlowski Signed-off-by: Otto Pfl=C3=BCger --- .../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