| * Qualcomm Technologies, Inc. MSM Camera CPAS |
| |
| The MSM camera CPAS device provides dependency definitions for |
| enabling Camera CPAS HW and provides the Client definitions |
| for all HW blocks that use CPAS driver for BW voting. These |
| definitions consist of various properties that define the list |
| of clients supported, AHB, AXI master-slave IDs used for BW |
| voting. |
| |
| ======================= |
| Required Node Structure |
| ======================= |
| The camera CPAS device must be described in five levels. The first level has |
| general description of cpas including compatibility, interrupts, power info |
| etc. |
| The second level deals with information related to CPAS clients and how |
| the BW should be calculated. For simplicity in BW vote consolidation, the |
| grouping of granular votes pertaining to CPAS clients is represented as nodes |
| at four CAMNOC levels. The nodes at a particular level have some common |
| properties such as traffic merge type which indicates whether the votes at a |
| node have to be summed up, sum divided by two or taken max of all. CAMNOC Level |
| zero node usually represents granular vote info for clients. CAMNOC Level one |
| represents nodes which are clubbed together by arbiter in CAMNOC diagram. CAMNOC |
| Level two represents consolidated read and write nodes for RT and NRT paths. |
| CAMNOC Level three provides axi port information and these have nodes where all |
| paths from clients eventually converge according to their properties. This |
| includes master-slave IDs, ab, ib values for mnoc, camnoc bus interface |
| |
| ================================== |
| First Level Node - CAM CPAS device |
| ================================== |
| - cell-index |
| Usage: required |
| Value type: <u32> |
| Definition: Node instance number. |
| |
| - compatible |
| Usage: required |
| Value type: <string> |
| Definition: Should be "qcom,cam-cpas". |
| |
| - label |
| Usage: required |
| Value type: <string> |
| Definition: Should be "cpas". |
| |
| - arch-compat |
| Usage: required |
| Value type: <string> |
| Definition: Should be "cpas_top" or "camss_top". |
| |
| - reg-names |
| Usage: required |
| Value type: <string> |
| Definition: Name of the register resources. |
| |
| - reg |
| Usage: required |
| Value type: <u32> |
| Definition: Register values. |
| |
| - reg-cam-base |
| Usage: required |
| Value type: <u32> |
| Definition: Offset of the register space compared to |
| to Camera base register space. |
| |
| - cam_hw_fuse |
| Usage: optional |
| Value type: <u32> |
| Definition: List of fuse based features and respective |
| fuse info. |
| |
| - interrupt-names |
| Usage: optional |
| Value type: <string> |
| Definition: Name of the interrupt. |
| |
| - interrupts |
| Usage: optional |
| Value type: <u32> |
| Definition: Interrupt associated with CAMNOC HW. |
| |
| - qcom,cpas-hw-ver |
| Usage: required |
| Value type: <u32> |
| Definition: CAM HW Version information. |
| |
| - camnoc-axi-min-ib-bw |
| Usage: optional |
| Value type: <u64> |
| Definition: Min camnoc axi bw for the given target. |
| |
| - regulator-names |
| Usage: required |
| Value type: <string> |
| Definition: Name of the regulator resources for CPAS 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 CPAS HW. |
| |
| - clocks |
| Usage: required |
| Value type: <phandle> |
| Definition: List of clocks used for CPAS HW. |
| |
| - src-clock-name |
| Usage: required |
| Value type: <string> |
| Definition: Source clock name. |
| |
| - clock-rates |
| Usage: required |
| Value type: <u32> |
| Definition: List of clocks rates. |
| |
| - 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. |
| |
| - control-camnoc-axi-clk |
| Usage: optional |
| Value type: <empty> |
| Definition: Bool property specifying whether to control camnoc axi |
| clock from cpas driver. |
| |
| - camnoc-bus-width |
| Usage: required if control-camnoc-axi-clk is enabled |
| Value type: <u32> |
| Definition: camnoc bus width. |
| |
| - camnoc-axi-clk-bw-margin-perc |
| Usage: optional |
| Value type: <u32> |
| Definition: Percentage value to be added to camnoc bw while calculating |
| camnoc axi clock frequency. |
| |
| - qcom,msm-bus,name |
| - qcom,msm-bus,num-cases |
| - qcom,msm-bus,num-paths |
| - qcom,msm-bus,vectors-KBps |
| Please refer Documentation/devicetree/bindings/arm/msm/msm_bus.txt |
| for the properties above. |
| |
| - vdd-corners |
| Usage: required |
| Value type: <u32> |
| Definition: List of vdd corners to map for ahb level. |
| |
| - vdd-corner-ahb-mapping |
| Usage: required |
| Value type: <string> |
| Definition: List of ahb level strings corresponds to vdd-corners. |
| Supported strings: suspend, svs, nominal, turbo |
| |
| - client-id-based |
| Usage: required |
| Value type: <empty> |
| Definition: Bool property specifying whether CPAS clients are ID based. |
| |
| - client-names |
| Usage: required |
| Value type: <string> |
| Definition: List of Clients supported by CPAS. |
| |
| - client-bus-camnoc-based |
| Usage: optional |
| Value type: <empty> |
| Definition: Bool property specifying whether Clients are connected |
| through CAMNOC for AXI access. |
| |
| =================================================================== |
| Third Level Node - CAMNOC Level nodes |
| =================================================================== |
| - level-index |
| Usage: required |
| Value type: <u32> |
| Definition: Number representing level index for ndoes at current CAMNOC level |
| |
| - camnoc-max-needed |
| Usage: optional |
| Value type: <empty> |
| Definition: Bool property for all votes at current level to be taken maximum |
| for CAMNOC BW calculation. |
| |
| =================================================================== |
| Fourth Level Node - Generic CAMNOC node properties |
| =================================================================== |
| - cell-index |
| Usage: required |
| Value type: <u32> |
| Definition: Unique index of node to be used by CPAS driver. |
| |
| - node-name |
| Usage: required |
| Value type: <string> |
| Definition: Unique name representing this node. |
| |
| - path-data-type |
| Usage: required if a CAMNOC Level 0 Node |
| Value type: <u32> |
| Definition: Type of path data for a specific client. |
| Supported : CAM_CPAS_PATH_DATA_IFE_LINEAR, CAM_CPAS_PATH_DATA_ALL, etc. |
| Please refer dt-bindings/msm/msm-camera.h for all supported |
| definitions. |
| |
| - path-transaction-type |
| Usage: required if a CAMNOC Level 0 Node |
| Value type: <u32> |
| Definition: Type of path transaction for a specific client. |
| Supported : CAM_CPAS_TRANSACTION_READ, CAM_CPAS_TRANSACTION_WRITE |
| |
| - client-name |
| Usage: required if a CAMNOC Level 0 Node |
| Value type: <string> |
| Definition: Name of the client with above properties. |
| Supported : From "client-names" property in CPAS node |
| |
| - constituent-paths |
| Usage: optional, applicable only to CAMNOC Level 0 Nodes |
| Value type: <u32> |
| Definition: List of constituents of path data type of current node. |
| Supported : CAM_CPAS_PATH_DATA_IFE_VID, CAM_CPAS_PATH_DATA_IFE_DISP, etc. |
| Please refer dt-bindings/msm/msm-camera.h for all supported |
| definitions. |
| |
| - traffic-merge-type |
| Usage: required if NOT a CAMNOC Level 0 Node |
| Value type: <u32> |
| Definition: Type of traffic merge for that node. |
| Supported : CAM_CPAS_TRAFFIC_MERGE_SUM, CAM_CPAS_TRAFFIC_MERGE_SUM_INTERLEAVE. |
| |
| - parent-node |
| Usage: required for all except CAMNOC Level 3 Nodes |
| Value type: <phandle> |
| Definition: Parent node of this node. Parent node must be at least |
| one level above the current level. |
| |
| - bus-width-factor |
| Usage: optional |
| Value type: <u32> |
| Definition: For bus width factor consideration in CAMNOC BW calculation |
| |
| - qcom,axi-port-name |
| Usage: required at CAMNOC Level 3 |
| Value type: <string> |
| Definition: Name of the AXI Port. |
| |
| - ib-bw-voting-needed |
| Usage: optional |
| Value type: <empty> |
| Definition: Bool property indicating axi port requires instantaneous bandwidth |
| |
| =================================================================== |
| Fifth Level Node - CAM AXI Bus Properties |
| =================================================================== |
| - qcom,msm-bus,name |
| - qcom,msm-bus,num-cases |
| - qcom,msm-bus,num-paths |
| - qcom,msm-bus,vectors-KBps |
| Please refer Documentation/devicetree/bindings/arm/msm/msm_bus.txt |
| for the properties above. |
| |
| - qcom,msm-bus-vector-dyn-vote |
| Usage: optional |
| Value type: <empty> |
| Definition: Bool property specifying whether this bus client |
| is dynamic vote based. |
| |
| Example: |
| |
| qcom,cam-cpas@ac40000 { |
| cell-index = <0>; |
| compatible = "qcom,cam-cpas"; |
| label = "cpas"; |
| arch-compat = "cpas_top"; |
| status = "ok"; |
| reg-names = "cam_cpas_top", "cam_camnoc"; |
| reg = <0xac40000 0x1000>, |
| <0xac42000 0x5000>; |
| reg-cam-base = <0x40000 0x42000>; |
| cam_hw_fuse = <CAM_CPAS_QCFA_BINNING_ENABLE 0x00780210 29>, |
| <CAM_CPAS_SECURE_CAMERA_ENABLE 0x00780210 18>; |
| interrupt-names = "cpas_camnoc"; |
| interrupts = <0 459 0>; |
| qcom,cpas-hw-ver = <0x170100>; /* Titan v170 v1.0.0 */ |
| regulator-names = "camss-vdd"; |
| camss-vdd-supply = <&titan_top_gdsc>; |
| clock-names = "gcc_ahb_clk", |
| "gcc_axi_clk", |
| "soc_ahb_clk", |
| "cpas_ahb_clk", |
| "slow_ahb_clk_src", |
| "camnoc_axi_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_SLOW_AHB_CLK_SRC>, |
| <&clock_camcc CAM_CC_CAMNOC_AXI_CLK>; |
| src-clock-name = "slow_ahb_clk_src"; |
| clock-rates = <0 0 0 0 80000000 0>; |
| clock-cntl-level = "turbo"; |
| control-camnoc-axi-clk; |
| camnoc-bus-width = <32>; |
| camnoc-axi-clk-bw-margin-perc = <10>; |
| qcom,msm-bus,name = "cam_ahb"; |
| qcom,msm-bus,num-cases = <4>; |
| qcom,msm-bus,num-paths = <1>; |
| qcom,msm-bus,vectors-KBps = |
| <MSM_BUS_MASTER_AMPSS_M0 |
| MSM_BUS_SLAVE_CAMERA_CFG 0 0>, |
| <MSM_BUS_MASTER_AMPSS_M0 |
| MSM_BUS_SLAVE_CAMERA_CFG 0 300000>, |
| <MSM_BUS_MASTER_AMPSS_M0 |
| MSM_BUS_SLAVE_CAMERA_CFG 0 640000>, |
| <MSM_BUS_MASTER_AMPSS_M0 |
| MSM_BUS_SLAVE_CAMERA_CFG 0 640000>; |
| client-id-based; |
| client-names = |
| "csiphy0", "csiphy1", "csiphy2", "csiphy3", |
| "csiphy4", "csiphy5", "cci0", "cci1", |
| "csid0", "csid1", "csid2", "csid3", |
| "csid4", "csid5", "csid6", |
| "ife0", "ife1", "ife2", "ife3", "custom0", |
| "ipe0", "cam-cdm-intf0", "cpas-cdm0", "cpas-cdm1", |
| "cpas-cdm2", |
| "bps0", "icp0", "jpeg-dma0", "jpeg-enc0", |
| "fd0"; |
| |
| camera-bus-nodes { |
| level3-nodes { |
| level-index = <3>; |
| level3_rt0_rd_wr_sum: level3-rt0-rd-wr-sum { |
| cell-index = <0>; |
| node-name = "level3-rt0-rd-wr-sum"; |
| traffic-merge-type = |
| <CAM_CPAS_TRAFFIC_MERGE_SUM>; |
| qcom,axi-port-name = "cam_hf_0"; |
| ib-bw-voting-needed; |
| qcom,axi-port-mnoc { |
| qcom,msm-bus,name = |
| "cam_hf_0_mnoc"; |
| qcom,msm-bus-vector-dyn-vote; |
| qcom,msm-bus,num-cases = <2>; |
| qcom,msm-bus,num-paths = <1>; |
| qcom,msm-bus,vectors-KBps = |
| <MSM_BUS_MASTER_CAMNOC_HF |
| MSM_BUS_SLAVE_EBI_CH0 0 0>, |
| <MSM_BUS_MASTER_CAMNOC_HF |
| MSM_BUS_SLAVE_EBI_CH0 0 0>; |
| }; |
| }; |
| }; |
| level2-nodes { |
| level-index = <2>; |
| camnoc-max-needed; |
| level2_rt0_wr: level2-rt0-wr { |
| cell-index = <3>; |
| node-name = "level2-rt0-wr"; |
| parent-node = <&level3_rt0_rd_wr_sum>; |
| traffic-merge-type = |
| <CAM_CPAS_TRAFFIC_MERGE_SUM_INTERLEAVE>; |
| }; |
| }; |
| level1-nodes { |
| level-index = <1>; |
| camnoc-max-needed; |
| level1_rt0_wr0: level1-rt0-wr0 { |
| cell-index = <8>; |
| node-name = "level1-rt0-wr0"; |
| parent-node = <&level2_rt0_wr>; |
| traffic-merge-type = |
| <CAM_CPAS_TRAFFIC_MERGE_SUM>; |
| }; |
| }; |
| level0-nodes { |
| level-index = <0>; |
| ife0_ubwc_stats_wr: ife0-ubwc-stats-wr { |
| cell-index = <16>; |
| node-name = "ife0-ubwc-stats-wr"; |
| client-name = "ife0"; |
| traffic-data = |
| <CAM_CPAS_PATH_DATA_IFE_UBWC_STATS>; |
| traffic-transaction-type = |
| <CAM_CPAS_TRANSACTION_WRITE>; |
| constituent-paths = |
| <CAM_CPAS_PATH_DATA_IFE_VID |
| CAM_CPAS_PATH_DATA_IFE_DISP |
| CAM_CPAS_PATH_DATA_IFE_STATS>; |
| parent-node = <&level1_rt0_wr0>; |
| }; |
| }; |
| }; |
| }; |
| |
