[PATCH v2 1/3] dt-bindings: mediatek: Add a binding for Mediatek JPEG Decoder

Rick Chang
2016-10-31T07:18:15Z

Add a DT binding documentation for Mediatek JPEG Decoder of
MT2701 SoC.

Signed-off-by: Rick Chang <rick.chang@mediatek.com>
Signed-off-by: Minghsiu Tsai <minghsiu.tsai@mediatek.com>
---
.../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 = <GIC_SPI 143 IRQ_TYPE_LEVEL_LOW>;
+ 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