Four imx390 can't get video

In hardware,I connected two max9296 with xavier,and echo max9296 connected two max9295,thus connecting four imx390.


when I hang one imx390 on the device tree,all four imx390 can get video in turn by modifying max9296’s addr
and port-index tegra_sinterface.

but when I hang all four imx390 on the device tree, I can only get video from two of them.

/ {
host1x {
	vi@15c10000 {
		num-channels = <4>;
		ports {
			#address-cells = <1>;
			#size-cells = <0>;
			port@0 {
				reg = <0>;
				imx390_vi_in0: endpoint {
					vc-id = <0>;
					port-index = <2>;
					bus-width = <4>;
					remote-endpoint = <&imx390_csi_out0>;
				};
			};
			port@1 {
				reg = <1>;
				imx390_vi_in1: endpoint {
					vc-id = <1>;
					port-index = <2>;
					bus-width = <4>;
					remote-endpoint = <&imx390_csi_out1>;
				};
			};
			#if 1
			port@2 {
				reg = <2>;
				imx390_vi_in2: endpoint {
					vc-id = <0>;
					port-index = <0>;
					bus-width = <4>;
					remote-endpoint = <&imx390_csi_out2>;
				};
			};
			port@3 {
				reg = <3>;
				imx390_vi_in3: endpoint {
					vc-id = <1>;
					port-index = <0>;
					bus-width = <4>;
					remote-endpoint = <&imx390_csi_out3>;
				};
			};
			#endif
		};
	};

	nvcsi@15a00000 {
		num-channels = <4>;
		#address-cells = <1>;
		#size-cells = <0>;

		channel@0 {
			reg = <0>;
			ports {
				#address-cells = <1>;
				#size-cells = <0>;
				port@0 {
					reg = <0>;
					imx390_csi_in0: endpoint@0 {
						port-index = <2>;
						bus-width = <4>;
						remote-endpoint = <&imx390_imx390_out0>;
					};
				};

				port@1 {
					reg = <1>;
					imx390_csi_out0: endpoint@1 {
						remote-endpoint = <&imx390_vi_in0>;
					};
				};

			};
		};
		channel@1 {
			reg = <1>;
			ports {
				#address-cells = <1>;
				#size-cells = <0>;
				port@0 {
					reg = <0>;
					imx390_csi_in1: endpoint@2 {
						port-index = <2>;
						bus-width = <4>;
						remote-endpoint = <&imx390_imx390_out1>;
					};
				};
				port@1 {
					reg = <1>;
					imx390_csi_out1: endpoint@3 {
						remote-endpoint = <&imx390_vi_in1>;
					};
				};
			};
		};
		#if 1
		channel@2 {
			reg = <2>;
			ports {
				#address-cells = <1>;
				#size-cells = <0>;
				port@0 {
					reg = <0>;
					imx390_csi_in2: endpoint@4 {
						port-index = <0>;
						bus-width = <4>;
						remote-endpoint = <&imx390_imx390_out2>;
					};
				};
				port@1 {
					reg = <1>;
					imx390_csi_out2: endpoint@5 {
						remote-endpoint = <&imx390_vi_in2>;
					};
				};
			};
		};
		channel@3 {
			reg = <3>;
			ports {
				#address-cells = <1>;
				#size-cells = <0>;
				port@0 {
					reg = <0>;
					imx390_csi_in3: endpoint@6 {
						port-index = <0>;
						bus-width = <4>;
						remote-endpoint = <&imx390_imx390_out3>;
					};
				};
				port@1 {
					reg = <1>;
					imx390_csi_out3: endpoint@7 {
						remote-endpoint = <&imx390_vi_in3>;
					};
				};
			};
		};
		#endif
	};

};

i2c@3180000 {

		imx390_a@1b {
			compatible = "nvidia,imx390";
			reg = <0x1b>;
			physical_w = "15.0";
			physical_h = "12.5";
			sensor_model ="imx390";
			post_crop_frame_drop = "0";
			use_decibel_gain = "true";
			delayed_gain = "true";
			use_sensor_mode_id = "true";
			mode0 {/*mode IMX390_MODE_1920X1080_CROP_30FPS*/
				mclk_khz = "24000";
				num_lanes = "4";
				tegra_sinterface = "serial_c";
				vc_id = "0";
				discontinuous_clk = "no";
				dpcm_enable = "false";
				cil_settletime = "0";
				dynamic_pixel_bit_depth = "12";
				csi_pixel_bit_depth = "12";
				mode_type = "bayer";
				pixel_phase = "rggb";
				active_w = "1920";
				active_h = "1080";
				pixel_t = "bayer_rggb12";
				readout_orientation = "0";
				line_length = "4400";
				inherent_gain = "1";
				mclk_multiplier = "6.18";
				pix_clk_hz = "148500000";
				serdes_pix_clk_hz = "1485000000";
				min_gain_val = "0"; /* dB */
				max_gain_val = "30"; /* dB */
				min_hdr_ratio = "1";
				max_hdr_ratio = "1";
				min_framerate = "1.5";
				max_framerate = "30";
				min_exp_time = "118"; /*us,4 lines*/
				max_exp_time = "660000";
				embedded_metadata_height = "0";
			};
			ports {
				#address-cells = <1>;
				#size-cells = <0>;
				port@0 {
					reg = <0>;
					imx390_imx390_out0: endpoint {
						vc-id = <0>;
						port-index = <2>;
						bus-width = <4>;
						remote-endpoint = <&imx390_csi_in0>;
						};
					};
				};
			gmsl-link {
				src-csi-port = "b";
				dst-csi-port = "b";
				serdes-csi-link = "a";
				csi-mode = "1x4";
				st-vc = <0>;
				vc-id = <0>;
				num-lanes = <4>;
				streams = "raw12";
				};
			};
		imx390_b@1c {
			compatible = "nvidia,imx390";
			reg = <0x1c>;
			physical_w = "15.0";
			physical_h = "12.5";
			sensor_model ="imx390";
			post_crop_frame_drop = "0";
			use_decibel_gain = "true";
			delayed_gain = "true";
			use_sensor_mode_id = "true";
			mode0 {/*mode IMX390_MODE_1920X1080_CROP_30FPS*/
				mclk_khz = "24000";
				num_lanes = "4";
				tegra_sinterface = "serial_c";
				vc_id = "1";
				discontinuous_clk = "no";
				dpcm_enable = "false";
				cil_settletime = "0";
				dynamic_pixel_bit_depth = "12";
				csi_pixel_bit_depth = "12";
				mode_type = "bayer";
				pixel_phase = "rggb";
				active_w = "1920";
				active_h = "1080";
				pixel_t = "bayer_rggb";
				readout_orientation = "0";
				line_length = "4400";
				inherent_gain = "1";
				mclk_multiplier = "6.18";
				pix_clk_hz = "148500000";
				min_gain_val = "0"; /* dB */
				max_gain_val = "30"; /* dB */
				min_hdr_ratio = "1";
				max_hdr_ratio = "1";
				min_framerate = "1.5";
				max_framerate = "30";
				min_exp_time = "118"; /*us,4 lines*/
				max_exp_time = "660000";
				embedded_metadata_height = "0";
			};
			ports {
				#address-cells = <1>;
				#size-cells = <0>;
				port@0 {
					reg = <0>;
					imx390_imx390_out1: endpoint {
						vc-id = <1>;
						port-index = <2>;
						bus-width = <4>;
						remote-endpoint = <&imx390_csi_in1>;
						};
					};
				};
			gmsl-link {
				src-csi-port = "b";
				dst-csi-port = "b";
				serdes-csi-link = "b";
				csi-mode = "1x4";
				st-vc = <0>;
				vc-id = <1>;
				num-lanes = <4>;
				streams = "raw12";
				};
			};

		#if 1
		imx390_c@1d {
			compatible = "nvidia,imx390";
			reg = <0x1d>;
			physical_w = "15.0";
			physical_h = "12.5";
			sensor_model ="imx390";
			post_crop_frame_drop = "0";
			use_decibel_gain = "true";
			delayed_gain = "true";
			use_sensor_mode_id = "true";
			mode0 {/*mode IMX390_MODE_1920X1080_CROP_30FPS*/
				mclk_khz = "24000";
				num_lanes = "4";
				tegra_sinterface = "serial_a";
				vc_id = "0";
				discontinuous_clk = "no";
				dpcm_enable = "false";
				cil_settletime = "0";
				dynamic_pixel_bit_depth = "12";
				csi_pixel_bit_depth = "12";
				mode_type = "bayer";
				pixel_phase = "rggb";
				active_w = "1920";
				active_h = "1080";
				pixel_t = "bayer_rggb12";
				readout_orientation = "0";
				line_length = "4400";
				inherent_gain = "1";
				mclk_multiplier = "6.18";
				pix_clk_hz = "148500000";
				serdes_pix_clk_hz = "1485000000";
				min_gain_val = "0"; /* dB */
				max_gain_val = "30"; /* dB */
				min_hdr_ratio = "1";
				max_hdr_ratio = "1";
				min_framerate = "1.5";
				max_framerate = "30";
				min_exp_time = "118"; /*us,4 lines*/
				max_exp_time = "660000";
				embedded_metadata_height = "0";
			};
			ports {
				#address-cells = <1>;
				#size-cells = <0>;
				port@0 {
					reg = <0>;
					imx390_imx390_out2: endpoint {
						vc-id = <0>;
						port-index = <0>;
						bus-width = <4>;
						remote-endpoint = <&imx390_csi_in2>;
						};
					};
				};
			gmsl-link {
				src-csi-port = "b";
				dst-csi-port = "b";
				serdes-csi-link = "a";
				csi-mode = "1x4";
				st-vc = <0>;
				vc-id = <0>;
				num-lanes = <4>;
				streams = "raw12";
				};
			};

		imx390_d@1e{
			compatible = "nvidia,imx390";
			reg = <0x1e>;
			physical_w = "15.0";
			physical_h = "12.5";
			sensor_model ="imx390";
			post_crop_frame_drop = "0";
			use_decibel_gain = "true";
			delayed_gain = "true";
			use_sensor_mode_id = "true";
			mode0 {/*mode IMX390_MODE_1920X1080_CROP_30FPS*/
				mclk_khz = "24000";
				num_lanes = "4";
				tegra_sinterface = "serial_a";
				vc_id = "1";
				discontinuous_clk = "no";
				dpcm_enable = "false";
				cil_settletime = "0";
				dynamic_pixel_bit_depth = "12";
				csi_pixel_bit_depth = "12";
				mode_type = "bayer";
				pixel_phase = "rggb";
				active_w = "1920";
				active_h = "1080";
				pixel_t = "bayer_rggb";
				readout_orientation = "0";
				line_length = "4400";
				inherent_gain = "1";
				mclk_multiplier = "6.18";
				pix_clk_hz = "148500000";
				min_gain_val = "0"; /* dB */
				max_gain_val = "30"; /* dB */
				min_hdr_ratio = "1";
				max_hdr_ratio = "1";
				min_framerate = "1.5";
				max_framerate = "30";
				min_exp_time = "118"; /*us,4 lines*/
				max_exp_time = "660000";
				embedded_metadata_height = "0";
			};
			ports {
				#address-cells = <1>;
				#size-cells = <0>;
				port@0 {
					reg = <0>;
					imx390_imx390_out3: endpoint {
						vc-id = <1>;
						port-index = <0>;
						bus-width = <4>;
						remote-endpoint = <&imx390_csi_in3>;
						};
					};
				};
			gmsl-link {
				src-csi-port = "b";
				dst-csi-port = "b";
				serdes-csi-link = "b";
				csi-mode = "1x4";
				st-vc = <0>;
				vc-id = <1>;
				num-lanes = <4>;
				streams = "raw12";
				};
			};
	    #endif
};

};

/ {

tegra-camera-platform {
	compatible = "nvidia, tegra-camera-platform";
	/**
	* Physical settings to calculate max ISO BW
	*
	* num_csi_lanes = <>;
	* Total number of CSI lanes when all cameras are active
	*
	* max_lane_speed = <>;
	* Max lane speed in Kbit/s
	*
	* min_bits_per_pixel = <>;
	* Min bits per pixel
	*
	* vi_peak_byte_per_pixel = <>;
	* Max byte per pixel for the VI ISO case
	*
	* vi_bw_margin_pct = <>;
	* Vi bandwidth margin in percentage
	*
	* max_pixel_rate = <>;
	* Max pixel rate in Kpixel/s for the ISP ISO case
	*
	* isp_peak_byte_per_pixel = <>;
	* Max byte per pixel for the ISP ISO case
	*
	* isp_bw_margin_pct = <>;
	* Isp bandwidth margin in percentage
	*/
	num_csi_lanes = <8>;
	max_lane_speed = <4000000>;
	min_bits_per_pixel = <10>;
	vi_peak_byte_per_pixel = <2>;
	vi_bw_margin_pct = <25>;
	isp_peak_byte_per_pixel = <5>;
	isp_bw_margin_pct = <25>;

	/**
	 * The general guideline for naming badge_info contains 3 parts, and is as follows,
	 * The first part is the camera_board_id for the module; if the module is in a FFD
	 * platform, then use the platform name for this part.
	 * The second part contains the position of the module, ex. "rear" or "front".
	 * The third part contains the last 6 characters of a part number which is found
	 * in the module's specsheet from the vender.
	 */
	modules {
		module0 {
			badge = "imx390_rear";
			position = "rear";
			orientation = "0";
			drivernode0 {
				/* Declare PCL support driver (classically known as guid)  */
				pcl_id = "v4l2_sensor";
				/* Driver v4l2 device name */
				devname = "imx390 2-001b";
				/* Declare the device-tree hierarchy to driver instance */
				proc-device-tree = "/proc/device-tree/i2c@3180000/imx390_a@1b";
			};
		};
		module1 {
			badge = "imx390_front";
			position = "front";
			orientation = "1";
			drivernode0 {
				/* Declare PCL support driver (classically known as guid)  */
				pcl_id = "v4l2_sensor";
				/* Driver v4l2 device name */
				devname = "imx390 2-001c";
				/* Declare the device-tree hierarchy to driver instance */
				proc-device-tree = "/proc/device-tree/i2c@3180000/imx390_b@1c";
			};
		};
		module2 {
			badge = "imx390_left";
			position = "left";
			orientation = "0";
			drivernode0 {
				/* Declare PCL support driver (classically known as guid)  */
				pcl_id = "v4l2_sensor";
				/* Driver v4l2 device name */
				devname = "imx390 2-001d";
				/* Declare the device-tree hierarchy to driver instance */
				proc-device-tree = "/proc/device-tree/i2c@3180000/imx390_c@1d";
			};
		};
		module3 {
			badge = "imx390_right";
			position = "right";
			orientation = "1";
			drivernode0 {
				/* Declare PCL support driver (classically known as guid)  */
				pcl_id = "v4l2_sensor";
				/* Driver v4l2 device name */
				devname = "imx390 2-001e";
				/* Declare the device-tree hierarchy to driver instance */
				proc-device-tree = "/proc/device-tree/i2c@3180000/imx390_d@1e";
			};
		};
	};
};
};

The same with Max9296 ----max9295-----imx390