On 04/01/16 11:11, Tiffany Lin wrote:
Add a DT binding documentation of Video Encoder for the
MT8173 SoC from Mediatek.
Signed-off-by: Tiffany Lin <tiffany.lin@xxxxxxxxxxxx>
---
.../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..5cc35ae
--- /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.
+- mediatek,larb : must contain the local arbiters in the current Socs.
+- 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.
iommus have only one cell, as in the example below. Please fix the
binding description accordingly.
Regards,
Matthias
+- mediatek,vpu : the node of video processor unit
+
+Example:
+vcodec_enc: vcodec@0x18002000 {
+ 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>;
+ mediatek,larb = <&larb3>,
+ <&larb5>;
+ iommus = <&iommu M4U_PORT_VENC_RCPU>,
+ <&iommu M4U_PORT_VENC_REC>,
+ <&iommu M4U_PORT_VENC_BSDMA>,
+ <&iommu M4U_PORT_VENC_SV_COMV>,
+ <&iommu M4U_PORT_VENC_RD_COMV>,
+ <&iommu M4U_PORT_VENC_CUR_LUMA>,
+ <&iommu M4U_PORT_VENC_CUR_CHROMA>,
+ <&iommu M4U_PORT_VENC_REF_LUMA>,
+ <&iommu M4U_PORT_VENC_REF_CHROMA>,
+ <&iommu M4U_PORT_VENC_NBM_RDMA>,
+ <&iommu M4U_PORT_VENC_NBM_WDMA>,
+ <&iommu M4U_PORT_VENC_RCPU_SET2>,
+ <&iommu M4U_PORT_VENC_REC_FRM_SET2>,
+ <&iommu M4U_PORT_VENC_BSDMA_SET2>,
+ <&iommu M4U_PORT_VENC_SV_COMA_SET2>,
+ <&iommu M4U_PORT_VENC_RD_COMA_SET2>,
+ <&iommu M4U_PORT_VENC_CUR_LUMA_SET2>,
+ <&iommu M4U_PORT_VENC_CUR_CHROMA_SET2>,
+ <&iommu M4U_PORT_VENC_REF_LUMA_SET2>,
+ <&iommu M4U_PORT_VENC_REC_CHROMA_SET2>;
+ mediatek,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";
+ };
--
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