linux-kernel - [RESEND RFC/PATCH 4/8] dt-bindings: Add a binding for Mediatek Video Encoder

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Message-ID: <1447764885-23100-5-git-send-email-tiffany.lin@mediatek.com>
Date:	Tue, 17 Nov 2015 20:54:41 +0800
From:	Tiffany Lin <tiffany.lin@...iatek.com>
To:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Hongzhou Yang <hongzhou.yang@...iatek.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Sakari Ailus <sakari.ailus@....fi>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Mikhail Ulyanov <mikhail.ulyanov@...entembedded.com>,
	Fabien Dessenne <fabien.dessenne@...com>,
	Arnd Bergmann <arnd@...db.de>,
	Darren Etheridge <detheridge@...com>,
	Peter Griffin <peter.griffin@...aro.org>,
	Benoit Parrot <bparrot@...com>
CC:	Tiffany Lin <tiffany.lin@...iatek.com>,
	Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	James Liao <jamesjj.liao@...iatek.com>,
	Daniel Hsiao <daniel.hsiao@...iatek.com>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-media@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>
Subject: [RESEND RFC/PATCH 4/8] dt-bindings: Add a binding for Mediatek Video Encoder

add a DT binding documentation of Video Encoder for the
MT8173 SoC from Mediatek.

Signed-off-by: Tiffany Lin <tiffany.lin@...iatek.com>
---
 .../devicetree/bindings/media/mediatek-vcodec.txt  |   58 ++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/mediatek-vcodec.txt

diff --git a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt
new file mode 100644
index 0000000..fea4d7c
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt
@@ -0,0 +1,58 @@
+Mediatek Video Codec
+
+Mediatek Video Codec is the video codec hw present in Mediatek SoCs which
+supports high resolution encoding functionalities.
+
+Required properties:
+- compatible : "mediatek,mt8173-vcodec-enc" for encoder
+- reg : Physical base address of the video codec registers and length of
+  memory mapped region.
+- interrupts : interrupt number to the cpu.
+- larb : must contain the larbes of current platform
+- clocks : list of clock specifiers, corresponding to entries in
+  the clock-names property;
+- clock-names: must contain "vencpll", "venc_lt_sel", "vcodecpll_370p5_ck"
+- iommus : list of iommus specifiers should be enabled for hw encode.
+  There are 2 cells needed to enable/disable iommu.
+  The first one is local arbiter index(larbid), and the other is port
+  index(portid) within local arbiter. Specifies the larbid and portid
+  as defined in dt-binding/memory/mt8173-larb-port.h.
+- vpu : the node of video processor unit
+
+Example:
+vcodec_enc: vcodec@...8002000 {
+    compatible = "mediatek,mt8173-vcodec-enc";
+    reg = <0 0x18002000 0 0x1000>,    /*VENC_SYS*/
+          <0 0x19002000 0 0x1000>;    /*VENC_LT_SYS*/
+    interrupts = <GIC_SPI 198 IRQ_TYPE_LEVEL_LOW>,
+           <GIC_SPI 202 IRQ_TYPE_LEVEL_LOW>;
+    larb = <&larb3>,
+           <&larb5>;
+    iommus = <&iommu M4U_LARB3_ID M4U_PORT_VENC_RCPU>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_REC>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_BSDMA>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_SV_COMV>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_RD_COMV>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_CUR_LUMA>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_CUR_CHROMA>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_REF_LUMA>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_REF_CHROMA>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_NBM_RDMA>,
+             <&iommu M4U_LARB3_ID M4U_PORT_VENC_NBM_WDMA>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_RCPU_SET2>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_REC_FRM_SET2>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_BSDMA_SET2>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_SV_COMA_SET2>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_RD_COMA_SET2>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_CUR_LUMA_SET2>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_CUR_CHROMA_SET2>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_REF_LUMA_SET2>,
+             <&iommu M4U_LARB5_ID M4U_PORT_VENC_REC_CHROMA_SET2>;
+    vpu = <&vpu>;
+    clocks = <&apmixedsys CLK_APMIXED_VENCPLL>,
+             <&topckgen CLK_TOP_VENC_LT_SEL>,
+             <&topckgen CLK_TOP_VCODECPLL_370P5>;
+    clock-names = "vencpll",
+                  "venc_lt_sel",
+                  "vcodecpll_370p5_ck";
+  };
-- 
1.7.9.5

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