From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stanimir Varbanov Subject: [PATCH v6 2/9] doc: DT: venus: binding document for Qualcomm video driver Date: Tue, 7 Feb 2017 15:10:17 +0200 Message-ID: <1486473024-21705-3-git-send-email-stanimir.varbanov@linaro.org> References: <1486473024-21705-1-git-send-email-stanimir.varbanov@linaro.org> Return-path: In-Reply-To: <1486473024-21705-1-git-send-email-stanimir.varbanov@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org To: Mauro Carvalho Chehab , Hans Verkuil Cc: Andy Gross , Bjorn Andersson , Stephen Boyd , Srinivas Kandagatla , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Stanimir Varbanov , Rob Herring , devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org Add binding document for Venus video encoder/decoder driver Cc: Rob Herring Cc: devicetree@vger.kernel.org Signed-off-by: Stanimir Varbanov --- Changes since previous v5: * dropped rproc phandle (remoteproc is not used anymore) * added subnodes paragraph with descrition of three subnodes: - video-decoder and video-encoder - describes decoder (core0) and encoder (core1) power-domains and clocks (applicable for msm8996 Venus core). - video-firmware - needed to get reserved memory region where the firmware is stored. .../devicetree/bindings/media/qcom,venus.txt | 112 +++++++++++++++++++++ 1 file changed, 112 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..4427af3ca5a5 --- /dev/null +++ b/Documentation/devicetree/bindings/media/qcom,venus.txt @@ -0,0 +1,112 @@ +* Qualcomm Venus video encode/decode accelerator + +- compatible: + Usage: required + Value type: + Definition: Value should contain one of: + - "qcom,msm8916-venus" + - "qcom,msm8996-venus" +- reg: + Usage: required + Value type: + Definition: Register base address and length of the register map. +- interrupts: + Usage: required + Value type: + Definition: Should contain interrupt line number. +- clocks: + Usage: required + Value type: + Definition: A List of phandle and clock specifier pairs as listed + in clock-names property. +- clock-names: + Usage: required for msm8916 + Value type: + 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: + 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: + 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: + Definition: A list of phandle and IOMMU specifier pairs. + +* Subnodes +The Venus node must contain three subnodes representing video-decoder, +video-encoder and video-firmware. + +Every of video-encoder or video-decoder subnode should have: + +- compatible: + Usage: required + Value type: + Definition: Value should contain "venus-decoder" or "venus-encoder" +- clocks: + Usage: required for msm8996 + Value type: + Definition: A List of phandle and clock specifier pairs as listed + in clock-names property. +- clock-names: + Usage: required for msm8996 + Value type: + Definition: Should contain the following entries: + - "core" Subcore video accelerator clock + +- power-domains: + Usage: required for msm8996 + Value type: + Definition: A phandle and power domain specifier pairs to the + power domain which is responsible for collapsing + and restoring power to the subcore. + +The video-firmware subnode should contain: + +- memory-region: + Usage: required + Value type: + Definition: reference to the reserved-memory for the memory region + +* An Example + video-codec@1d00000 { + compatible = "qcom,msm8916-venus"; + reg = <0x01d00000 0xff000>; + interrupts = ; + 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>; + + 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>; + }; + + video-firmware { + memory-region = <&venus_mem>; + }; + }; -- 2.7.4