Jetson Nano 2 sensors connected at the same time

I want to use my custom sensor two times at the same time on different i2c. I used the imx219-dual example for my device tree.

In the example, the status for the i2c is all set to “disabled”.

If I set it to “disabled” the Jetson will not boot. If I set it to “okay” the camera is found twice, even when only one is connected.

How come setting disabled makes the jetson not to boot anymore? Is there any chance to debug this?

What is the correct way to add 2 sensors to the device tree without using the plugin-manager?

Thank you for any help!
Here is my device tree:

/*

  • Copyright © 2018-2019, NVIDIA CORPORATION. All rights reserved.
  • This program is free software; you can redistribute it and/or modify
  • it under the terms of the GNU General Public License as published by
  • the Free Software Foundation; either version 2 of the License, or
  • (at your option) any later version.
  • This program is distributed in the hope that it will be useful, but WITHOUT
  • ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  • FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  • more details.
  • You should have received a copy of the GNU General Public License
  • along with this program. If not, see http://www.gnu.org/licenses/.
    */

#include <dt-bindings/media/camera.h>
#include <dt-bindings/platform/t210/t210.h>

#define CAM1_PWDN TEGRA_GPIO(S, 7)
#define CAM2_PWDN TEGRA_GPIO(T, 0)
#define CAM_I2C_MUX TEGRA_GPIO(I, 0) // NFC_EN GPIO

/ {
host1x {
vi_base: vi {
num-channels = <2>;
ports {
#address-cells = <1>;
#size-cells = <0>;
vi_port0: port@0 {
reg = <0>;
OS02C10_vi_in0: endpoint {
port-index = <0>;
bus-width = <4>;
remote-endpoint = <&OS02C10_csi_out0>;
};
};
vi_port1: port@1 {
reg = <1>;
OS02C10_vi_in1: endpoint {
port-index = <4>;
bus-width = <4>;
remote-endpoint = <&OS02C10_csi_out1>;
};
};
};
};

  csi_base: nvcsi {
  	num-channels = <2>;
  	#address-cells = <1>;
  	#size-cells = <0>;
  	csi_chan0: channel@0 {
  		reg = <0>;
  		ports {
  			#address-cells = <1>;
  			#size-cells = <0>;
  			csi_chan0_port0: port@0 {
  				reg = <0>;
  				OS02C10_csi_in0: endpoint@0 {
  					port-index = <0>;
  					bus-width = <4>;
  					remote-endpoint = <&OS02C10_dual_out0>;
  				};
  			};
  			csi_chan0_port1: port@1 {
  				reg = <1>;
  				OS02C10_csi_out0: endpoint@1 {
  					remote-endpoint = <&OS02C10_vi_in0>;
  				};
  			};
  		};
  	};
  	csi_chan1: channel@1 {
  		reg = <1>;
  		ports {
  			#address-cells = <1>;
  			#size-cells = <0>;
  			csi_chan1_port0: port@2 {
  				reg = <0>;
  				OS02C10_csi_in1: endpoint@2 {
  					port-index = <4>;
  					bus-width = <4>;
  					remote-endpoint = <&OS02C10_out1>;
  				};
  			};
  			csi_chan1_port1: port@3 {
  				reg = <1>;
  				OS02C10_csi_out1: endpoint@3 {
  					remote-endpoint = <&OS02C10_vi_in1>;
  				};
  			};
  		};
  	};
  };

};

cam_i2cmux {
compatible = “i2c-mux-gpio”;
#address-cells = <1>;
#size-cells = <0>;
mux-gpios = <&gpio CAM_I2C_MUX GPIO_ACTIVE_HIGH>;
i2c-parent = <&i2c7>;
status = “okay”;
i2c_0: i2c@0 {
status = “okay”;
reg = <0>;
#address-cells = <1>;
#size-cells = <0>;
OS02C10_cam0: OS02C10_a@36 {
status = “okay”;
reset-gpios = <&gpio CAM1_PWDN GPIO_ACTIVE_HIGH>;
compatible = “nvidia,OS02C10”;
reg = <0x36>;

                        devnode = "video0";

                        /* Physical dimensions of sensor */
                        physical_w = "15.0";
                        physical_h = "12.5";

                        sensor_model ="OS02C10";
                        /* Define any required hw resources needed by driver */
                        /* ie. clocks, io pins, power sources */

                        /* Defines number of frames to be dropped by driver internally after applying */
                        /* sensor crop settings. Some sensors send corrupt frames after applying */
                        /* crop co-ordinates */
                        post_crop_frame_drop = "0";

                        /* Convert Gain to unit of dB (decibel) befor passing to kernel driver */
                        use_decibel_gain = "false";

                        /* if true, delay gain setting by one frame to be in sync with exposure */
                        delayed_gain = "true";

                        /* enable CID_SENSOR_MODE_ID for sensor modes selection */
                        use_sensor_mode_id = "true";

                        /**
                        * ==== Modes ====
                        * A modeX node is required to support v4l2 driver
                        * implementation with NVIDIA camera software stack
                        *
                        * == Signal properties ==
                        *
                        * phy_mode = "";
                        * PHY mode used by the MIPI lanes for this device
                        *
                        * tegra_sinterface = "";
                        * CSI Serial interface connected to tegra
                        * Incase of virtual HW devices, use virtual
                        * For SW emulated devices, use host
                        *
                        * pix_clk_hz = "";
                        * Sensor pixel clock used for calculations like exposure and framerate
                        *
                        * readout_orientation = "0";
                        * Based on camera module orientation.
                        * Only change readout_orientation if you specifically
                        * Program a different readout order for this mode
                        *
                        * == Image format Properties ==
                        *
                        * active_w = "";
                        * Pixel active region width
                        *
                        * active_h = "";
                        * Pixel active region height
                        *
                        * pixel_t = "";
                        * The sensor readout pixel pattern
                        *
                        * line_length = "";
                        * Pixel line length (width) for sensor mode.
                        *
                        * == Source Control Settings ==
                        *
                        * Gain factor used to convert fixed point integer to float
                        * Gain range [min_gain/gain_factor, max_gain/gain_factor]
                        * Gain step [step_gain/gain_factor is the smallest step that can be configured]
                        * Default gain [Default gain to be initialized for the control.
                        *     use min_gain_val as default for optimal results]
                        * Framerate factor used to convert fixed point integer to float
                        * Framerate range [min_framerate/framerate_factor, max_framerate/framerate_factor]
                        * Framerate step [step_framerate/framerate_factor is the smallest step that can befor configured]
                        * Default Framerate [Default framerate to be initialized for the control.
                        *     use max_framerate to get required performance]
                        * Exposure factor used to convert fixed point integer to float
                        * For convenience use 1 sec = 1000000us as conversion factor
                        * Exposure range [min_exp_time/exposure_factor, max_exp_time/exposure_factor]
                        * Exposure step [step_exp_time/exposure_factor is the smallest step that can befor configured]
                        * Default Exposure Time [Default exposure to be initialized for the control.
                        *     Set default exposure based on the default_framerate for optimal exposure settings]
                        *
                        * gain_factor = ""; (integer factor used for floating to fixed point conversion)
                        * min_gain_val = ""; (ceil to integer)
                        * max_gain_val = ""; (ceil to integer)
                        * step_gain_val = ""; (ceil to integer)
                        * default_gain = ""; (ceil to integer)
                        * Gain limits for mode
                        *
                        * exposure_factor = ""; (integer factor used for floating to fixed point conversion)
                        * min_exp_time = ""; (ceil to integer)
                        * max_exp_time = ""; (ceil to integer)
                        * step_exp_time = ""; (ceil to integer)
                        * default_exp_time = ""; (ceil to integer)
                        * Exposure Time limits for mode (sec)
                        *
                        * framerate_factor = ""; (integer factor used for floating to fixed point conversion)
                        * min_framerate = ""; (ceil to integer)
                        * max_framerate = ""; (ceil to integer)
                        * step_framerate = ""; (ceil to integer)
                        * default_framerate = ""; (ceil to integer)
                        * Framerate limits for mode (fps)
                        *
                        * embedded_metadata_height = "";
                        * Sensor embedded metadata height in units of rows.
                        * If sensor does not support embedded metadata value should be 0.
                        */
                        mode0 {/*mode OS02C10_MODE_1920X1080_CROP_30FPS*/
                        mclk_khz = "24000";
                        num_lanes = "4";
                        tegra_sinterface = "serial_a";
                        phy_mode = "DPHY";
                        discontinuous_clk = "no";
                        dpcm_enable = "false";
                        cil_settletime = "0";
                        dynamic_pixel_bit_depth = "10";
                        csi_pixel_bit_depth = "10";
                        mode_type = "bayer";
                        pixel_phase = "bggr";

                        active_w = "1920";
                        active_h = "1080";
                        readout_orientation = "0";
                        line_length = "2560";
                        inherent_gain = "1";
                        pix_clk_hz = "288000000";
    //pix_clk_hz = "384000000";
                        //serdes_pix_clk_hz = "320000000";

                        gain_factor = "16";
                        min_gain_val = "16";
                        max_gain_val = "255";
                        step_gain_val = "1";
                        default_gain = "16";
                        min_hdr_ratio = "1";
                        max_hdr_ratio = "1";
                        framerate_factor = "1000000";
                        min_framerate = "1000000";
                        max_framerate = "90000000";
                        step_framerate = "1";
                        default_framerate= "30000000";
                        exposure_factor = "1000000";
                        min_exp_time = "100";
                        max_exp_time = "1000000";
                        step_exp_time = "1";
                        default_exp_time = "9000";
                        embedded_metadata_height = "0";
                        };

  		ports {
  			#address-cells = <1>;
  			#size-cells = <0>;

  			port@0 {
  				reg = <0>;
  				OS02C10_dual_out0: endpoint {
  					port-index = <0>;
  					bus-width = <4>;
  					remote-endpoint = <&OS02C10_csi_in0>;
  				};
  			};
  		};
  	};
  };
  i2c_1: i2c@1 {
  status = "okay";
    			reg = <1>;
    			#address-cells = <1>;
    			#size-cells = <0>;
  	OS02C10_cam1: OS02C10_e@36 {

            compatible = "nvidia,OS02C10";
            reg = <0x36>;

            status = "okay";
            reset-gpios = <&gpio CAM2_PWDN GPIO_ACTIVE_HIGH>;
             devnode = "video1";

            /* Physical dimensions of sensor */
            physical_w = "15.0";
            physical_h = "12.5";

            sensor_model ="OS02C10";
            /* Define any required hw resources needed by driver */
            /* ie. clocks, io pins, power sources */

            /* Defines number of frames to be dropped by driver internally after applying */
            /* sensor crop settings. Some sensors send corrupt frames after applying */
            /* crop co-ordinates */
            post_crop_frame_drop = "0";

            /* Convert Gain to unit of dB (decibel) befor passing to kernel driver */
            use_decibel_gain = "false";

            /* if true, delay gain setting by one frame to be in sync with exposure */
            delayed_gain = "true";

            /* enable CID_SENSOR_MODE_ID for sensor modes selection */
            use_sensor_mode_id = "true";

            /**
            * ==== Modes ====
            * A modeX node is required to support v4l2 driver
            * implementation with NVIDIA camera software stack
            *
            * == Signal properties ==
            *
            * phy_mode = "";
            * PHY mode used by the MIPI lanes for this device
            *
            * tegra_sinterface = "";
            * CSI Serial interface connected to tegra
            * Incase of virtual HW devices, use virtual
            * For SW emulated devices, use host
            *
            * pix_clk_hz = "";
            * Sensor pixel clock used for calculations like exposure and framerate
            *
            * readout_orientation = "0";
            * Based on camera module orientation.
            * Only change readout_orientation if you specifically
            * Program a different readout order for this mode
            *
            * == Image format Properties ==
            *
            * active_w = "";
            * Pixel active region width
            *
            * active_h = "";
            * Pixel active region height
            *
            * pixel_t = "";
            * The sensor readout pixel pattern
            *
            * line_length = "";
            * Pixel line length (width) for sensor mode.
            *
            * == Source Control Settings ==
            *
            * Gain factor used to convert fixed point integer to float
            * Gain range [min_gain/gain_factor, max_gain/gain_factor]
            * Gain step [step_gain/gain_factor is the smallest step that can be configured]
            * Default gain [Default gain to be initialized for the control.
            *     use min_gain_val as default for optimal results]
            * Framerate factor used to convert fixed point integer to float
            * Framerate range [min_framerate/framerate_factor, max_framerate/framerate_factor]
            * Framerate step [step_framerate/framerate_factor is the smallest step that can befor configured]
            * Default Framerate [Default framerate to be initialized for the control.
            *     use max_framerate to get required performance]
            * Exposure factor used to convert fixed point integer to float
            * For convenience use 1 sec = 1000000us as conversion factor
            * Exposure range [min_exp_time/exposure_factor, max_exp_time/exposure_factor]
            * Exposure step [step_exp_time/exposure_factor is the smallest step that can befor configured]
            * Default Exposure Time [Default exposure to be initialized for the control.
            *     Set default exposure based on the default_framerate for optimal exposure settings]
            *
            * gain_factor = ""; (integer factor used for floating to fixed point conversion)
            * min_gain_val = ""; (ceil to integer)
            * max_gain_val = ""; (ceil to integer)
            * step_gain_val = ""; (ceil to integer)
            * default_gain = ""; (ceil to integer)
            * Gain limits for mode
            *
            * exposure_factor = ""; (integer factor used for floating to fixed point conversion)
            * min_exp_time = ""; (ceil to integer)
            * max_exp_time = ""; (ceil to integer)
            * step_exp_time = ""; (ceil to integer)
            * default_exp_time = ""; (ceil to integer)
            * Exposure Time limits for mode (sec)
            *
            * framerate_factor = ""; (integer factor used for floating to fixed point conversion)
            * min_framerate = ""; (ceil to integer)
            * max_framerate = ""; (ceil to integer)
            * step_framerate = ""; (ceil to integer)
            * default_framerate = ""; (ceil to integer)
            * Framerate limits for mode (fps)
            *
            * embedded_metadata_height = "";
            * Sensor embedded metadata height in units of rows.
            * If sensor does not support embedded metadata value should be 0.
            */
            mode0 {/*mode OS02C10_MODE_1920X1080_CROP_30FPS*/
             mclk_khz = "24000";
             num_lanes = "4";
             tegra_sinterface = "serial_a";
             phy_mode = "DPHY";
             discontinuous_clk = "no";
             dpcm_enable = "false";
             cil_settletime = "0";
             dynamic_pixel_bit_depth = "10";
             csi_pixel_bit_depth = "10";
             mode_type = "bayer";
             pixel_phase = "bggr";

             active_w = "1920";
             active_h = "1080";
             readout_orientation = "0";
             line_length = "2560";
             inherent_gain = "1";
             pix_clk_hz = "288000000";
             //pix_clk_hz = "384000000";
             //serdes_pix_clk_hz = "320000000";

             gain_factor = "16";
             min_gain_val = "16";
             max_gain_val = "255";
             step_gain_val = "1";
             default_gain = "16";
             min_hdr_ratio = "1";
             max_hdr_ratio = "1";
             framerate_factor = "1000000";
             min_framerate = "1000000";
             max_framerate = "90000000";
             step_framerate = "1";
             default_framerate= "30000000";
             exposure_factor = "1000000";
             min_exp_time = "100";
             max_exp_time = "1000000";
             step_exp_time = "1";
             default_exp_time = "9000";
             embedded_metadata_height = "0";
            };

  		ports {
  			#address-cells = <1>;
  			#size-cells = <0>;

  			port@0 {
  				reg = <0>;
  				OS02C10_out1: endpoint {
  					port-index = <4>;
  					bus-width = <4>;
  					remote-endpoint = <&OS02C10_csi_in0>;
  				};
  			};
  		};
  	};
  };

};
gpio@6000d000 {
camera-control-output-low {
gpio-hog;
output-low;
gpios = < CAM1_PWDN 0 CAM2_PWDN 0>;
label = “cam1-pwdn”, “cam2-pwdn”;
};
};

};

/ {
tcp: 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 = <1500000>;
  min_bits_per_pixel = <10>;
  vi_peak_byte_per_pixel = <2>;
  vi_bw_margin_pct = <25>;
  max_pixel_rate = <240000>;
  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 vendor.
   */
  modules {
  	cam_module0: module0 {
  		badge = "porg_front_OS02C10";
  		position = "front";
  		orientation = "0";
  		cam_module0_drivernode0: drivernode0 {
  			pcl_id = "v4l2_sensor";
  			devname = "OS02C10 7-0036";
  			proc-device-tree = "/proc/device-tree/cam_i2cmux/i2c@0/OS02C10_a@36";
  		};
  	};
  	cam_module1: module1 {
  		badge = "porg_rear_OS02C10";
  		position = "rear";
  		orientation = "0";
  		cam_module1_drivernode0: drivernode0 {
  			pcl_id = "v4l2_sensor";
  			devname = "OS02C10 8-0036";
  			proc-device-tree = "/proc/device-tree/cam_i2cmux/i2c@1/OS02C10_e@36";
  		};
  	};
  };

};
};

Would you try to the imx219-dual dts without plugin-manager to check if have the same issue.

Hey ShaneCCC,
In the meantime, I found out, that the documentation from our carrier board is wrong, and it is not the same as the devkit when it comes to i2c, so the examples should not work.

But since I knew it was easy to add the second sensor in the other i2c device.

I am sorry I did not reply to this thread right away.
Sorry for the inconvenience!

Should I mark it solved or delete it, since I was wrong in the first place?

Best regards,
jb