Re: [PATCH 8/9] dt-bindings: reserved-memory: MediaTek: Add reserved memory for SVP
From: Rob Herring <robh@kernel.org>
Date: 2023-09-11 21:19:07
Also in:
dri-devel, linux-arm-kernel, linux-media, linux-mediatek, lkml
On Mon, Sep 11, 2023 at 10:30:37AM +0800, Yong Wu wrote:
This adds the binding for describing a CMA memory for MediaTek SVP(Secure Video Path).
CMA is a Linux thing. How is this related to CMA?
quoted hunk ↗ jump to hunk
Signed-off-by: Yong Wu <yong.wu@mediatek.com> --- .../mediatek,secure_cma_chunkmem.yaml | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/reserved-memory/mediatek,secure_cma_chunkmem.yamldiff --git a/Documentation/devicetree/bindings/reserved-memory/mediatek,secure_cma_chunkmem.yaml b/Documentation/devicetree/bindings/reserved-memory/mediatek,secure_cma_chunkmem.yaml new file mode 100644 index 000000000000..cc10e00d35c4 --- /dev/null +++ b/Documentation/devicetree/bindings/reserved-memory/mediatek,secure_cma_chunkmem.yaml@@ -0,0 +1,42 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reserved-memory/mediatek,secure_cma_chunkmem.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek Secure Video Path Reserved Memory
What makes this specific to Mediatek? Secure video path is fairly common, right?
+
+description:
+ This binding describes the reserved memory for secure video path.
+
+maintainers:
+ - Yong Wu [off-list ref]
+
+allOf:
+ - $ref: reserved-memory.yaml
+
+properties:
+ compatible:
+ const: mediatek,secure_cma_chunkmem
+
+required:
+ - compatible
+ - reg
+ - reusable
+
+unevaluatedProperties: false
+
+examples:
+ - |
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ reserved-memory@80000000 {
+ compatible = "mediatek,secure_cma_chunkmem";
+ reusable;
+ reg = <0x80000000 0x18000000>;
+ };
+ };
--
2.25.1