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diff --git a/bindings/msm-cam-jpeg.txt b/bindings/msm-cam-jpeg.txt new file mode 100644 index 0000000..73e99b2 --- /dev/null +++ b/bindings/msm-cam-jpeg.txt @@ -0,0 +1,186 @@ +* Qualcomm Technologies, Inc. MSM Camera JPEG + +The MSM camera JPEG devices are implemented multiple device nodes. +The root JPEG device node has properties defined to hint the driver +about the number of Encoder and DMA nodes available during the +probe sequence. Each node has multiple properties defined +for interrupts, clocks and regulators. + +======================= +Required Node Structure +======================= +JPEG root interface node takes care of the handling account for number +of Encoder and DMA devices present on the hardware. + +- compatible + Usage: required + Value type: <string> + Definition: Should be "qcom,cam-jpeg". + +- compat-hw-name + Usage: required + Value type: <string> + Definition: Should be "qcom,jpegenc" or "qcom,jpegdma". + +- num-jpeg-enc + Usage: required + Value type: <u32> + Definition: Number of supported Encoder HW blocks. + +- num-jpeg-dma + Usage: required + Value type: <u32> + Definition: Number of supported DMA HW blocks. + +Example: + qcom,cam-jpeg { + compatible = "qcom,cam-jpeg"; + compat-hw-name = "qcom,jpegenc", + "qcom,jpegdma"; + num-jpeg-enc = <1>; + num-jpeg-dma = <1>; + status = "ok"; + }; + + +======================= +Required Node Structure +======================= +Encoder/DMA Nodes provide interface for JPEG driver about +the device register map, interrupt map, clocks and regulators. + +- cell-index + Usage: required + Value type: <u32> + Definition: Node instance number. + +- compatible + Usage: required + Value type: <string> + Definition: Should be "qcom,cam_jpeg_enc". + +- reg-names + Usage: optional + Value type: <string> + Definition: Name of the register resources. + +- reg + Usage: optional + Value type: <u32> + Definition: Register values. + +- reg-cam-base + Usage: optional + Value type: <u32> + Definition: Offset of the register space compared to + to Camera base register space. + +- interrupt-names + Usage: optional + Value type: <string> + Definition: Name of the interrupt. + +- interrupts + Usage: optional + Value type: <u32> + Definition: Interrupt associated with JPEG HW. + +- regulator-names + Usage: required + Value type: <string> + Definition: Name of the regulator resources for JPEG HW. + +- camss-vdd-supply + Usage: required + Value type: <phandle> + Definition: Regulator reference corresponding to the names listed + in "regulator-names". + +- clock-names + Usage: required + Value type: <string> + Definition: List of clock names required for JPEG HW. + +- clocks + Usage: required + Value type: <phandle> + Definition: List of clocks used for JPEG HW. + +- clock-rates + Usage: required + Value type: <u32> + Definition: List of clocks rates. + +- src-clock-name + Usage: required + Value type: <string> + Definition: Source clock name. + +- clock-cntl-level + Usage: required + Value type: <string> + Definition: List of strings corresponds clock-rates levels. + Supported strings: minsvs, lowsvs, svs, svs_l1, nominal, turbo. + +Examples: + cam_jpeg_enc: qcom,jpegenc@ac4e000 { + cell-index = <0>; + compatible = "qcom,cam_jpeg_enc"; + reg-names = "jpege_hw"; + reg = <0xac4e000 0x4000>; + reg-cam-base = <0x4e000>; + interrupt-names = "jpeg"; + interrupts = <0 474 0>; + regulator-names = "camss-vdd"; + camss-vdd-supply = <&titan_top_gdsc>; + clock-names = "camera_ahb", + "camera_axi", + "soc_ahb_clk", + "cpas_ahb_clk", + "camnoc_axi_clk", + "jpegenc_clk_src", + "jpegenc_clk"; + clocks = <&clock_gcc GCC_CAMERA_AHB_CLK>, + <&clock_gcc GCC_CAMERA_AXI_CLK>, + <&clock_camcc CAM_CC_SOC_AHB_CLK>, + <&clock_camcc CAM_CC_CPAS_AHB_CLK>, + <&clock_camcc CAM_CC_CAMNOC_AXI_CLK>, + <&clock_camcc CAM_CC_JPEG_CLK_SRC>, + <&clock_camcc CAM_CC_JPEG_CLK>; + + clock-rates = <0 0 0 0 0 600000000 0>; + src-clock-name = "jpegenc_clk_src"; + clock-cntl-level = "nominal"; + status = "ok"; + }; + + cam_jpeg_dma: qcom,jpegdma@0xac52000{ + cell-index = <0>; + compatible = "qcom,cam_jpeg_dma"; + reg-names = "jpegdma_hw"; + reg = <0xac52000 0x4000>; + reg-cam-base = <0x52000>; + interrupt-names = "jpegdma"; + interrupts = <0 475 0>; + regulator-names = "camss-vdd"; + camss-vdd-supply = <&titan_top_gdsc>; + clock-names = "camera_ahb", + "camera_axi", + "soc_ahb_clk", + "cpas_ahb_clk", + "camnoc_axi_clk", + "jpegdma_clk_src", + "jpegdma_clk"; + clocks = <&clock_gcc GCC_CAMERA_AHB_CLK>, + <&clock_gcc GCC_CAMERA_AXI_CLK>, + <&clock_camcc CAM_CC_SOC_AHB_CLK>, + <&clock_camcc CAM_CC_CPAS_AHB_CLK>, + <&clock_camcc CAM_CC_CAMNOC_AXI_CLK>, + <&clock_camcc CAM_CC_JPEG_CLK_SRC>, + <&clock_camcc CAM_CC_JPEG_CLK>; + + clock-rates = <0 0 0 0 0 600000000 0>; + src-clock-name = "jpegdma_clk_src"; + clock-cntl-level = "nominal"; + status = "ok"; + }; |