linux-kernel - [PATCH v4 2/9] doc: DT: venus: binding document for Qualcomm video driver

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Message-Id: <1480583001-32236-3-git-send-email-stanimir.varbanov@linaro.org>
Date:   Thu,  1 Dec 2016 11:03:14 +0200
From:   Stanimir Varbanov <stanimir.varbanov@...aro.org>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>
Cc:     Andy Gross <andy.gross@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Subject: [PATCH v4 2/9] doc: DT: venus: binding document for Qualcomm video driver

Add binding document for Venus video encoder/decoder driver

Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: devicetree@...r.kernel.org
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
---
Rob, I have removed vmem clocks, interrupts and reg properties
for vmem thing. Probably I will come with a separate platform
driver fro that and pass the video memory DT node as phandle.

 .../devicetree/bindings/media/qcom,venus.txt       | 82 ++++++++++++++++++++++
 1 file changed, 82 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..a64b4ea1ebba
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/qcom,venus.txt
@@ -0,0 +1,82 @@
+* Qualcomm Venus video encode/decode accelerator
+
+- 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 ranges as listed in the reg-names property.
+- reg-names:
+	Usage: required
+	Value type: <stringlist>
+	Definition: Should contain following entries:
+		- "base"	Venus 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
+- 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
+	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
+- 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@...0000 {
+		compatible = "qcom,msm8916-venus";
+		reg = <0x01d00000 0xff000>;
+		reg-names = "base";
+		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