[PATCH v10 02/18] doc: DT: venus: binding document for Qualcomm video driver
From: Stanimir Varbanov <hidden>
Date: 2017-06-12 16:29:44
Also in:
linux-arm-msm, linux-media, lkml
Subsystem:
arm/qualcomm mailing list, media input infrastructure (v4l/dvb), open firmware and flattened device tree bindings, qualcomm media platform, qualcomm venus video accelerator driver, the rest · Maintainers:
Mauro Carvalho Chehab, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Bryan O'Donoghue, Vikash Garodia, Dikshita Agarwal, Linus Torvalds
Add binding document for Venus video encoder/decoder driver Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stanimir Varbanov <redacted> --- .../devicetree/bindings/media/qcom,venus.txt | 107 +++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/qcom,venus.txt
diff --git a/Documentation/devicetree/bindings/media/qcom,venus.txt b/Documentation/devicetree/bindings/media/qcom,venus.txt
new file mode 100644
index 000000000000..2693449daf73
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/qcom,venus.txt@@ -0,0 +1,107 @@ +* Qualcomm Venus video encoder/decoder accelerators + +- compatible: + Usage: required + Value type: <stringlist> + Definition: Value should contain one of: + - "qcom,msm8916-venus" + - "qcom,msm8996-venus" +- reg: + Usage: required + Value type: <prop-encoded-array> + Definition: Register base address and length of the register map. +- interrupts: + Usage: required + Value type: <prop-encoded-array> + Definition: Should contain interrupt line number. +- clocks: + Usage: required + Value type: <prop-encoded-array> + Definition: A List of phandle and clock specifier pairs as listed + in clock-names property. +- clock-names: + Usage: required for msm8916 + Value type: <stringlist> + Definition: Should contain the following entries: + - "core" Core video accelerator clock + - "iface" Video accelerator AHB clock + - "bus" Video accelerator AXI clock +- clock-names: + Usage: required for msm8996 + Value type: <stringlist> + Definition: Should contain the following entries: + - "core" Core video accelerator clock + - "iface" Video accelerator AHB clock + - "bus" Video accelerator AXI clock + - "mbus" Video MAXI clock +- power-domains: + Usage: required + Value type: <prop-encoded-array> + Definition: A phandle and power domain specifier pairs to the + power domain which is responsible for collapsing + and restoring power to the peripheral. +- iommus: + Usage: required + Value type: <prop-encoded-array> + Definition: A list of phandle and IOMMU specifier pairs. +- memory-region: + Usage: required + Value type: <phandle> + Definition: reference to the reserved-memory for the firmware + memory region. + +* Subnodes +The Venus video-codec node must contain two subnodes representing +video-decoder and video-encoder. + +Every of video-encoder or video-decoder subnode should have: + +- compatible: + Usage: required + Value type: <stringlist> + Definition: Value should contain "venus-decoder" or "venus-encoder" +- clocks: + Usage: required for msm8996 + Value type: <prop-encoded-array> + Definition: A List of phandle and clock specifier pairs as listed + in clock-names property. +- clock-names: + Usage: required for msm8996 + Value type: <stringlist> + Definition: Should contain the following entries: + - "core" Subcore video accelerator clock + +- power-domains: + Usage: required for msm8996 + Value type: <prop-encoded-array> + Definition: A phandle and power domain specifier pairs to the + power domain which is responsible for collapsing + and restoring power to the subcore. + +* An Example + video-codec@1d00000 { + compatible = "qcom,msm8916-venus"; + reg = <0x01d00000 0xff000>; + interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&gcc GCC_VENUS0_VCODEC0_CLK>, + <&gcc GCC_VENUS0_AHB_CLK>, + <&gcc GCC_VENUS0_AXI_CLK>; + clock-names = "core", "iface", "bus"; + power-domains = <&gcc VENUS_GDSC>; + iommus = <&apps_iommu 5>; + memory-region = <&venus_mem>; + + video-decoder { + compatible = "venus-decoder"; + clocks = <&mmcc VIDEO_SUBCORE0_CLK>; + clock-names = "core"; + power-domains = <&mmcc VENUS_CORE0_GDSC>; + }; + + video-encoder { + compatible = "venus-encoder"; + clocks = <&mmcc VIDEO_SUBCORE1_CLK>; + clock-names = "core"; + power-domains = <&mmcc VENUS_CORE1_GDSC>; + }; + };
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2.7.4