NX GMSL setup problem

[malcolm.mcdowell]

Hi,

I am setting up a device device tree for the max9296 and imx304 camera. I am getting an error in dmesg:

[21941.417956] misc tegra_camera_ctrl: tegra_camera_isomgr_request: failed to reserve 0 KBps
[21941.418110] misc tegra_camera_ctrl: tegra_camera_update_isobw: failed to reserve 0 KBps with isomgr

I am new to the GMSL and wanted to know what definition/parameters I have missed in the device tree or if there is something else in the code that is missing.

Bottom line, I am looking for help on the cause of the above error.

Malcolm

[ShaneCCC]

Have a check the device configure.

        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 = <2>;
                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>;