LT6911 Driver and DTS

Hi,
I find in L4T 32.5.1 BSP source has a LT6911UXC driver
(Linux_for_Tegra/source/public/kernel/nvidia/drivers/media/i2c/lt6911uxc.c)
and I have to use the LT6911 chip in L4T 32.4.4.1 on NX.
Should I do any modification to this driver?

I find there is an I2C subnode in dtsi to describe LT6911
(Linux_for_Tegra/source/public/hardware/nvidia/platform/t19x/common/kernel-dts/t19x-common-modules/tegra194-camera-e2832.dtsi)

I also find the AGX’s dts has included this dtsi
another question is should I modify the subnode in dtsi file or just include this file to NX’s dts file?

i2c@3180000 {
	e2832@2b {
		compatible = "nvidia,lt6911uxc";
		/* I2C device address */
		reg = <0x2b>;

		/* V4L2 device node location */
		devnode = "video0";

		/* Physical dimensions of sensor */
		physical_w = "3.674";
		physical_h = "2.738";

		sensor_model = "e2832";

		/* Define any required hw resources needed by driver */
		/* ie. clocks, io pins, power sources */
		avdd-reg = "vana";
		iovdd-reg = "vif";
		dvdd-reg = "vdig";

		/* 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";*/

		/**
		* ==== 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 be 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 be configured]
		* Default Exposure Time [Default exposure to be initialized for the control.
                                 *     Set default exposure based on the default_framerate for optimal exposure settings]
		* For convenience use 1 sec = 1000000us as conversion factor
		*
		* 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.

		* num_of_exposure = "";
		* Digital overlap(Dol) frames
		*
		* num_of_ignored_lines = "";
		* Used for cropping, eg. OB lines + Ignored area of effective pixel lines
		*
		* num_of_lines_offset_0 = "";
		* Used for cropping, vertical blanking in front of short exposure data
		* If more Dol frames are used, it can be extended, eg. num_of_lines_offset_1
		*
		* num_of_ignored_pixels = "";
		* Used for cropping, The length of line info(pixels)
		*
		* num_of_left_margin_pixels = "";
		* Used for cropping, the size of the left edge margin before
		* the active pixel area (after ignored pixels)
		*
		* num_of_right_margin_pixels = "";
		* Used for cropping, the size of the right edge margin after
		* the active pixel area
		*
		*/
		mode0 { // E2832_1920x1080_60Fps
			mclk_khz = "24000";
			num_lanes = "4";
			tegra_sinterface = "serial_a";
			phy_mode = "DPHY";
			discontinuous_clk = "yes";
			dpcm_enable = "false";
			cil_settletime = "0";

			active_w = "1920";
			active_h = "1080";
			mode_type = "rgb";
			pixel_phase = "rgb888";
			csi_pixel_bit_depth = "24";
			readout_orientation = "0";
			line_length = "1920";
			inherent_gain = "1";
			mclk_multiplier = "24";
			pix_clk_hz = "576000000";

			gain_factor = "16";
			framerate_factor = "1000000";
			exposure_factor = "1000000";
			min_gain_val = "16"; /* 1.00x */
			max_gain_val = "170"; /* 10.66x */
			step_gain_val = "1";
			default_gain = "16"; /* 1.00x */
			min_hdr_ratio = "1";
			max_hdr_ratio = "1";
			min_framerate = "2000000"; /* 2.0 fps */
			max_framerate = "60000000"; /* 60.0 fps */
			step_framerate = "1";
			default_framerate = "60000000"; /* 60.0 fps */
			min_exp_time = "13"; /* us */
			max_exp_time = "683709"; /* us */
			step_exp_time = "1";
			default_exp_time = "16667"; /* us  */
		};

		mode1 { // E2832_1280x720_60Fps
			mclk_khz = "24000";
			num_lanes = "4";
			tegra_sinterface = "serial_a";
			phy_mode = "DPHY";
			discontinuous_clk = "yes";
			dpcm_enable = "false";
			cil_settletime = "0";

			active_w = "1280";
			active_h = "720";
			mode_type = "rgb";
			pixel_phase = "rgb888";
			csi_pixel_bit_depth = "24";
			readout_orientation = "0";
			line_length = "1280";
			inherent_gain = "1";
			mclk_multiplier = "24";
			pix_clk_hz = "576000000";

			gain_factor = "16";
			framerate_factor = "1000000";
			exposure_factor = "1000000";
			min_gain_val = "16"; /* 1.00x */
			max_gain_val = "170"; /* 10.66x */
			step_gain_val = "1";
			default_gain = "16"; /* 1.00x */
			min_hdr_ratio = "1";
			max_hdr_ratio = "1";
			min_framerate = "2000000"; /* 2.0 fps */
			max_framerate = "60000000"; /* 60.0 fps */
			step_framerate = "1";
			default_framerate = "60000000"; /* 60.0 fps */
			min_exp_time = "13"; /* us */
			max_exp_time = "683709"; /* us */
			step_exp_time = "1";
			default_exp_time = "16667"; /* us  */
		};

		ports {
			#address-cells = <1>;
			#size-cells = <0>;
			port@0 {
				reg = <0>;
				e2832_out0: endpoint {
					port-index = <0>;
					bus-width = <4>;
					remote-endpoint = <&e2832_csi_in0>;
				};
			};
		};
	};
};

Thanks

You can try default driver first.

Thanks