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[2003:e4:1f20:1d00:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id l30-20020a05600c1d1e00b003c6b70a4d69sm3311363wms.42.2023.01.20.09.31.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Jan 2023 09:31:09 -0800 (PST) From: Thierry Reding To: David Airlie , Daniel Vetter , Thomas Zimmermann Subject: [PATCH v4 3/8] dt-bindings: reserved-memory: Support framebuffer reserved memory Date: Fri, 20 Jan 2023 18:30:58 +0100 Message-Id: <20230120173103.4002342-4-thierry.reding@gmail.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230120173103.4002342-1-thierry.reding@gmail.com> References: <20230120173103.4002342-1-thierry.reding@gmail.com> MIME-Version: 1.0 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: , Cc: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, Jon Hunter , linux-tegra@vger.kernel.org, Robin Murphy Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Thierry Reding Document the "framebuffer" compatible string for reserved memory nodes to annotate reserved memory regions used for framebuffer carveouts. Reviewed-by: Rob Herring 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>; + }; + }; + }; +...