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[2003:e4:1f20:1d00:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id u22-20020aa7d896000000b00459f4974128sm874496edq.50.2022.11.17.10.40.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Nov 2022 10:40:49 -0800 (PST) From: Thierry Reding To: David Airlie , Daniel Vetter , Thomas Zimmermann Cc: Jon Hunter , Robin Murphy , dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring Subject: [PATCH v3 3/8] dt-bindings: reserved-memory: Support framebuffer reserved memory Date: Thu, 17 Nov 2022 19:40:34 +0100 Message-Id: <20221117184039.2291937-4-thierry.reding@gmail.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221117184039.2291937-1-thierry.reding@gmail.com> References: <20221117184039.2291937-1-thierry.reding@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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. 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>; + }; + }; + }; +... -- 2.38.1