Hi All,
I have a board built up with all the support circuitry with a Lontium LT6911UXC chip and now that Lontium have provided me with new firmware I’m getting MIPI data out when I connect a video source. The video is sourced from a Raspberry Pi and currently set to 1920x1080p50 and the next test will be with 4k if I ever get this working.
The kernel is loading the driver and says it can see the device but when I run the following command I get an error which is listed under the comman below:
Test Command
v4l2-ctl --set-fmt-video=width=1920,height=1080 --stream-mmap --stream-count=100 -d /dev/video0 --stream-to=test.raw
Error output
[ 474.338086] tegra-camrtc-capture-vi tegra-capture-vi: uncorr_err: request timed out after 2500 ms
[ 474.338467] tegra-camrtc-capture-vi tegra-capture-vi: err_rec: attempting to reset the capture channel
[ 474.340799] (NULL device *): vi_capture_control_message: NULL VI channel received
[ 474.341056] t194-nvcsi 13e10000.host1x:nvcsi@15a00000: csi5_stream_close: Error in closing stream_id=4, csi_port=4
[ 474.341273] (NULL device *): vi_capture_control_message: NULL VI channel received
[ 474.341472] t194-nvcsi 13e10000.host1x:nvcsi@15a00000: csi5_stream_open: VI channel not found for stream- 4 vc- 0
[ 474.341994] tegra-camrtc-capture-vi tegra-capture-vi: err_rec: successfully reset the capture channel
Can anyone point me in the right direction as to what this error is and how to correct it please? I’m stuck on this point and can’t seem to make headway so I’d be ever so grateful if someone could assist.
Further Information; This is with a carrier from VVDN, the MIPI data is RGB888 and 4 lanes are in use. I’m connected via i2c0 device node which is i2c bus8 @ 3160000.
I think my device tree file is wrong and is shown below:
/*
- Copyright (c) 2017-2022, 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/.
*/
define CAM3_PWDN TEGRA194_MAIN_GPIO(Q, 6)
/ {
tegra-capture-vi {
num-channels = <1>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
e2832_vi_in0: endpoint {
port-index = <4>;
bus-width = <8>;
remote-endpoint = <&e2832_csi_out0>;
};
};
};
};
host1x@13e00000 {
nvcsi@15a00000 {
num-channels = <1>;
#address-cells = <1>;
#size-cells = <0>;
channel@0 {
reg = <0>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
e2832_csi_in0: endpoint@0 {
port-index = <4>;
bus-width = <8>;
remote-endpoint = <&e2832_out0>;
};
};
port@1 {
reg = <1>;
e2832_csi_out0: endpoint@1 {
remote-endpoint = <&e2832_vi_in0>;
};
};
};
};
};
};
i2c@31e0000 {
e2832@2b {
compatible = "nvidia,lt6911uxc";
/* I2C device address */
reg = <0x2b>;
/* V4L2 device node location */
devnode = "video0";
reset-gpios = <&tegra_main_gpio CAM3_PWDN GPIO_ACTIVE_HIGH>;
/* 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_e";
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 = "220000000";
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_3840x2160
mclk_khz = "24000";
num_lanes = "8";
tegra_sinterface = "serial_e";
phy_mode = "DPHY";
discontinuous_clk = "yes";
dpcm_enable = "false";
cil_settletime = "0";
active_w = "3840";
active_h = "2160";
mode_type = "rgb";
pixel_phase = "rgb888";
csi_pixel_bit_depth = "24";
readout_orientation = "0";
line_length = "3840";
inherent_gain = "1";
mclk_multiplier = "24";
pix_clk_hz = "500000000";
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 */
};
mode2 { // E2832_1280x720_60Fps
mclk_khz = "24000";
num_lanes = "4";
tegra_sinterface = "serial_e";
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 = "220000000";
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 = <4>;
bus-width = <8>;
remote-endpoint = <&e2832_csi_in0>;
};
};
};
};
};
};
/ {
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 = <4>;
max_lane_speed = <1500000>;
min_bits_per_pixel = <10>;
vi_peak_byte_per_pixel = <2>;
vi_bw_margin_pct = <25>;
max_pixel_rate = <750000>;
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 = "e2832_ltx6911";
position = "bottom";
orientation = "1";
drivernode0 {
/* Declare PCL support driver (classically known as guid) */
pcl_id = "v4l2_sensor";
/* Driver v4l2 device name */
devname = "e2832 2-002b";
/* Declare the device-tree hierarchy to driver instance */
proc-device-tree = "/proc/device-tree/i2c@31e0000/e2832@2b";
};
};
};
};
};
Kind Regards,
Dan