On Mon, Nov 07, 2016 at 07:33:55PM +0200, Stanimir Varbanov wrote:
> Add binding document for Venus video encoder/decoder driver
>
> Cc: Rob Herring <robh...@kernel.org>
> Cc: Mark Rutland <mark.rutl...@arm.com>
> Cc: devicet...@vger.kernel.org
> Signed-off-by: Stanimir Varbanov <stanimir.varba...@linaro.org>
> ---
> .../devicetree/bindings/media/qcom,venus.txt | 98
> ++++++++++++++++++++++
> 1 file changed, 98 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..b2af347fbce4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/qcom,venus.txt
> @@ -0,0 +1,98 @@
> +* Qualcomm Venus video encode/decode accelerator
> +
> +- compatible:
> + Usage: required
> + Value type: <stringlist>
> + Definition: Value should contain one of:
> + - "qcom,venus-msm8916"
> + - "qcom,venus-msm8996"
The normal ordering is <vendor>,<soc>-<block>
> +- reg:
> + Usage: required
> + Value type: <prop-encoded-array>
> + Definition: Register ranges as listed in the reg-names property.
> +- reg-names:
> + Usage: required
> + Value type: <stringlist>
> + Definition: Should contain following entries:
> + - "venus" Venus register base
> +- reg-names:
I'd prefer these grouped as one entry for reg-names.
> + Usage: optional for msm8996
Why optional?
> + Value type: <stringlist>
> + Definition: Should contain following entries:
> + - "vmem" Video memory register base
> +- interrupts:
> + Usage: required
> + Value type: <prop-encoded-array>
> + Definition: Should contain interrupts as listed in the interrupt-names
> + property.
> +- interrupt-names:
> + Usage: required
> + Value type: <stringlist>
> + Definition: Should contain following entries:
> + - "venus" Venus interrupt line
> +- interrupt-names:
> + Usage: optional for msm8996
> + Value type: <stringlist>
> + Definition: Should contain following entries:
> + - "vmem" Video memory interrupt line
> +- 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
> + 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
Plus the 3 above?
> + Value type: <stringlist>
> + Definition: Should contain the following entries:
> + - "subcore0" Subcore0 video accelerator clock
> + - "subcore1" Subcore1 video accelerator clock
> + - "mmssnoc_axi" Multimedia subsystem NOC AXI clock
> + - "mmss_mmagic_iface" Multimedia subsystem MMAGIC AHB clock
> + - "mmss_mmagic_mbus" Multimedia subsystem MMAGIC MAXI clock
> + - "mmagic_video_bus" MMAGIC video AXI clock
> + - "video_mbus" Video MAXI clock
> +- clock-names:
> + Usage: optional for msm8996
Clocks shouldn't be optional unless you failed to add in an initial
binding.
> + Value type: <stringlist>
> + Definition: Should contain the following entries:
> + - "vmem_bus" Video memory MAXI clock
> + - "vmem_iface" Video memory AHB 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.
> +- rproc:
> + Usage: required
> + Value type: <prop-encoded-array>
> + Definition: A phandle to remote processor responsible for
> + firmware loading and processor booting.
> +
> +- iommus:
> + Usage: required
> + Value type: <prop-encoded-array>
> + Definition: A list of phandle and IOMMU specifier pairs.
> +
> +* An Example
> + video-codec@1d00000 {
> + compatible = "qcom,venus-msm8916";
> + reg = <0x01d00000 0xff000>;
> + reg-names = "venus";
> + interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "venus";
> + 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>;
> + rproc = <&venus_rproc>;
> + iommus = <&apps_iommu 5>;
> + };
> --
> 2.7.4
>
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