From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Chang Subject: [PATCH v2 1/3] dt-bindings: mediatek: Add a binding for Mediatek JPEG Decoder Date: Mon, 31 Oct 2016 15:16:55 +0800 Message-ID: <1477898217-19250-2-git-send-email-rick.chang@mediatek.com> References: <1477898217-19250-1-git-send-email-rick.chang@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1477898217-19250-1-git-send-email-rick.chang@mediatek.com> Sender: linux-kernel-owner@vger.kernel.org To: Hans Verkuil , Laurent Pinchart , Mauro Carvalho Chehab , Matthias Brugger Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, srv_heupstream@mediatek.com, linux-mediatek@lists.infradead.org, Minghsiu Tsai , Rick Chang List-Id: linux-mediatek@lists.infradead.org Add a DT binding documentation for Mediatek JPEG Decoder of MT2701 SoC. Signed-off-by: Rick Chang Signed-off-by: Minghsiu Tsai --- .../bindings/media/mediatek-jpeg-codec.txt | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/mediatek-jpeg-codec.txt diff --git a/Documentation/devicetree/bindings/media/mediatek-jpeg-codec.txt b/Documentation/devicetree/bindings/media/mediatek-jpeg-codec.txt new file mode 100644 index 0000000..514e656 --- /dev/null +++ b/Documentation/devicetree/bindings/media/mediatek-jpeg-codec.txt @@ -0,0 +1,35 @@ +* Mediatek JPEG Codec + +Mediatek JPEG Codec device driver is a v4l2 driver which can decode +JPEG-encoded video frames. + +Required properties: + - compatible : "mediatek,mt2701-jpgdec" + - reg : Physical base address of the jpeg codec registers and length of + memory mapped region. + - interrupts : interrupt number to the cpu. + - clocks : clock name from clock manager + - clock-names: the clocks of the jpeg codec H/W + - power-domains : a phandle to the power domain. + - larb : must contain the larbes of current platform + - iommus : Mediatek IOMMU H/W has designed the fixed associations with + the multimedia H/W. and there is only one multimedia iommu domain. + "iommus = <&iommu portid>" the "portid" is from + dt-bindings\iommu\mt2701-iommu-port.h, it means that this portid will + enable iommu. The portid default is disable iommu if "<&iommu portid>" + don't be added. + +Example: + jpegdec: jpegdec@15004000 { + compatible = "mediatek,mt2701-jpgdec"; + reg = <0 0x15004000 0 0x1000>; + interrupts = ; + clocks = <&imgsys CLK_IMG_JPGDEC_SMI>, + <&imgsys CLK_IMG_JPGDEC>; + clock-names = "jpgdec-smi", + "jpgdec"; + power-domains = <&scpsys MT2701_POWER_DOMAIN_ISP>; + mediatek,larb = <&larb2>; + iommus = <&iommu MT2701_M4U_PORT_JPGDEC_WDMA>, + <&iommu MT2701_M4U_PORT_JPGDEC_BSDMA>; + }; -- 1.9.1