From patchwork Fri Oct 7 12:49:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thierry Reding X-Patchwork-Id: 613581 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CDE56C433FE for ; Fri, 7 Oct 2022 12:50:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229716AbiJGMuH (ORCPT ); Fri, 7 Oct 2022 08:50:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229469AbiJGMuG (ORCPT ); Fri, 7 Oct 2022 08:50:06 -0400 Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [IPv6:2a00:1450:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1BB4D2B60F; Fri, 7 Oct 2022 05:49:59 -0700 (PDT) Received: by mail-ej1-x629.google.com with SMTP id a26so11120761ejc.4; Fri, 07 Oct 2022 05:49:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=U/DGi9HQh/INO76ufx6qo153czghX5f9wyf4yTlgdnU=; b=aDPiK9wgDuCz4iykhw/dpIIa1iCJJIzfjVwFJPE05jLGwbOb5Y9Jbi7xRrJ0kFvAM+ 98DH35bLCCPbb1e+/VgtbQ8LI7kSQMlcv5xVOekSPdapMDYrkz7wPGujvri5ib/ySiXj VsfZykt2TboOSqvJMQ2/MqZmVM0cn13QoXKGy9U31p0sxTavg5vPRwdD89hf1tSNCw8a sHrNaSx61u8KPf03hPcVluNJo6QoWfp7ZxUE9x554yCb7XpN/Ds9+elOSdJTv02BPxv1 b2ZBrpI+RSF2egeWZF/DF/Kha7O049hgBhmEWkVkXhhhjqt021cLCOU33PhU5vwAyZHH XcSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=U/DGi9HQh/INO76ufx6qo153czghX5f9wyf4yTlgdnU=; b=B+GEENoGXJ4dnU6HACMTRLDOk2fiYtfeeHfJjDUsusrwtZ1jb/joXXtTUfYRNQ9crP f6MtbrHy9S/GeHrDQrLDe6MZGydaPXGR77eJN5mK34QZb4/MkK8lcjDYxIas4EKbrScd erC8tUXE/6FcHetyBESR2V6cHJhlXch14iXzheWM3dybRhMDGDgAP4TwReuPtw4nSBmh 5WrYuo0Nv8XrlUAzAy/cJNhgKpsI7t+0JzWCHmRskPkmV3EArFzaysO5BuNSWYhf/vpQ HmTW5AYBeLva3HtxcAsu5Juem3rGW8fKYnVW+UmiBAl2QtJcmXjyeRKMkngTsKN5UF9l Yz8w== X-Gm-Message-State: ACrzQf2dUpuM03OnQj3EXSp1LCRELyROXMJcaGjDqKf7GIhpPt1Rdw+p zf0JRpB38t4reIqxWaqf4us= X-Google-Smtp-Source: AMsMyM4pPVMkGNTzw9EHjcedFTuvHCXHVwUn1M83nCd/82dP2yu3uWlCgG662VxDuaHMUllmScMb0Q== X-Received: by 2002:a17:907:9603:b0:742:9ed3:3af2 with SMTP id gb3-20020a170907960300b007429ed33af2mr3886671ejc.510.1665146997436; Fri, 07 Oct 2022 05:49:57 -0700 (PDT) Received: from localhost (p200300e41f201d00f22f74fffe1f3a53.dip0.t-ipconnect.de. [2003:e4:1f20:1d00:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id p9-20020a05640243c900b004573052bf5esm1424166edc.49.2022.10.07.05.49.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Oct 2022 05:49:56 -0700 (PDT) From: Thierry Reding To: David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Thierry Reding Cc: Jon Hunter , Robin Murphy , Thomas Zimmermann , dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v2 3/7] dt-bindings: reserved-memory: Support framebuffer reserved memory Date: Fri, 7 Oct 2022 14:49:42 +0200 Message-Id: <20221007124946.406808-4-thierry.reding@gmail.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221007124946.406808-1-thierry.reding@gmail.com> References: <20221007124946.406808-1-thierry.reding@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Thierry Reding Document the "framebuffer" compatible string for reserved memory nodes to annotate reserved memory regions used for framebuffer carveouts. Signed-off-by: Thierry Reding --- Changes in v2: - use four spaces for indentation in example (as recommended elsewhere) - add explicit root node - drop unneeded quotes .../bindings/reserved-memory/framebuffer.yaml | 52 +++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/reserved-memory/framebuffer.yaml diff --git a/Documentation/devicetree/bindings/reserved-memory/framebuffer.yaml b/Documentation/devicetree/bindings/reserved-memory/framebuffer.yaml new file mode 100644 index 000000000000..05b6648b3458 --- /dev/null +++ b/Documentation/devicetree/bindings/reserved-memory/framebuffer.yaml @@ -0,0 +1,52 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reserved-memory/framebuffer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: /reserved-memory framebuffer node bindings + +maintainers: + - devicetree-spec@vger.kernel.org + +allOf: + - $ref: reserved-memory.yaml + +properties: + compatible: + const: framebuffer + description: > + This indicates a region of memory meant to be used as a framebuffer for + a set of display devices. It can be used by an operating system to keep + the framebuffer from being overwritten and use it as the backing memory + for a display device (such as simple-framebuffer). + +unevaluatedProperties: false + +examples: + - | + / { + compatible = "foo"; + model = "foo"; + #address-cells = <1>; + #size-cells = <1>; + + chosen { + framebuffer { + compatible = "simple-framebuffer"; + memory-region = <&fb>; + }; + }; + + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + fb: framebuffer@80000000 { + compatible = "framebuffer"; + reg = <0x80000000 0x007e9000>; + }; + }; + }; +...