Hi,
I am getting this error when I try to stream mipi camera
misc tegra_camera_ctrl: tegra_camera_update_isobw: Warning, Requested ISO BW 82160028 has been capped to VI's max BW 3916800
Is there any way to fix this ?
Check below configure in your device tree to adjust the BW.
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 = <750000>;
isp_peak_byte_per_pixel = <5>;
isp_bw_margin_pct = <25>;
Hi @ShaneCCC ,
Can you let me know how to change to the required BW ?
misc tegra_camera_ctrl: tegra_camera_update_isobw: Warning, Requested ISO BW 82160028 has been capped to VI's max BW 3916800
Where these parameters are constant for my camera sensor.
num_csi_lanes = <2>;
max_lane_speed = <720000>;
min_bits_per_pixel = <10>;
max_pixel_rate = <90000>;
You can trace the below code to figure it out.
…/kernel/nvidia/drivers/video/tegra/camera/tegra_camera_platform.c