diff options
| author | Thierry Reding <treding@nvidia.com> | 2023-01-20 18:30:58 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2023-01-23 15:01:47 +0100 |
| commit | 1cd1b5c2f6ec91d2843bc1ff42bdacef97218ec6 (patch) | |
| tree | e4d9607103a26a7d1a8ea33251c332450e0abd89 /Documentation | |
| parent | ed1055394134674110dc51c972a09bf37bd4672e (diff) | |
dt-bindings: reserved-memory: Support framebuffer reserved memory
Document the "framebuffer" compatible string for reserved memory nodes
to annotate reserved memory regions used for framebuffer carveouts.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230120173103.4002342-4-thierry.reding@gmail.com
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/reserved-memory/framebuffer.yaml | 52 |
1 files changed, 52 insertions, 0 deletions
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>; + }; + }; + }; +... |