IMX8M mini mipi camera with "Lost Frame End Error"

[link]

Hi everyone,

I try to capture mipi raw12 data from a mipi sensor. When the camera resolution is 640*480, the image is normal and the serial port will not report errors.But when I switch the camera resolution to 640* 960, and the serial port will display the following message: "Lost Frame End Error".

[   44.464914] mxc_mipi-csi.0: Lost Frame End Error: 559
[   44.469973] mxc_mipi-csi.0: Frame Start: 559
[   44.474242] mxc_mipi-csi.0: Frame End: 558
[   44.478337] mxc_mipi-csi.0: status: 01100100
[   44.531539] mxc_mipi-csi.0: Lost Frame End Error: 560
[   44.536598] mxc_mipi-csi.0: Frame Start: 560
[   44.540865] mxc_mipi-csi.0: Frame End: 559
[   44.544959] mxc_mipi-csi.0: status: 01100100
[   44.599598] mxc_mipi-csi.0: Lost Frame End Error: 561
[   44.604658] mxc_mipi-csi.0: Frame Start: 561
[   44.608927] mxc_mipi-csi.0: Frame End: 560
[   44.613022] mxc_mipi-csi.0: status: 01100100
[   44.664740] mxc_mipi-csi.0: Lost Frame End Error: 562
[   44.669799] mxc_mipi-csi.0: Frame Start: 562
[   44.674067] mxc_mipi-csi.0: Frame End: 561
[   44.678162] mxc_mipi-csi.0: status: 01100100
[   44.731361] mxc_mipi-csi.0: Lost Frame End Error: 563
[   44.736420] mxc_mipi-csi.0: Frame Start: 563
[   44.740687] mxc_mipi-csi.0: Frame End: 562
[   44.744780] mxc_mipi-csi.0: status: 01100100

The left side is the abnormal image when the problem occurs, and the right side is the normal image as contrast.

May I ask what is the possible cause of this problem?

[igorpadykov]

Hi Yanlin

one can try to adjust HSSETTLE, CLKSETTLECTL parameters and clocks as described on

https://community.nxp.com/t5/i-MX-Processors/Explenation-for-HS-SETTLE-parameter-in-MIPI-CSI-D-PHY-r...

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/Setting-i-MX8M-Mini-and-Nano-MIPI-DPHY-C...

Best regards
igor

[link]

Hi igorpadykov:

    The MIPI rate of my camera is 270M (using 2-lanes mode). Follow the following table to configure HSSETTLE and CLKSETTLECTL  like this:

&mipi_csi_1 {
	#address-cells = <1>;
	#size-cells = <0>;
	status = "okay";
	port {
		mipi1_sensor_ep: endpoint@1 {
			remote-endpoint = <&vzense_camera_mipi_csi>;
			data-lanes = <2>;
			csis-hs-settle = <5>;
			csis-clk-settle = <0>;
			csis-wclk;
		};

		csi1_mipi_ep: endpoint@2 {
			remote-endpoint = <&csi1_ep>;
		};
	};
};

MIPI Serial clock Frequency (MHz)	HSSETTLE[7:0]	CLKSETTLECTL[1:0]
1500	33	0
1490~1450	32	0
1440~1410	31	0
1400~1360	30	0
1350~1320	29	0
1310~1270	28	0
1260~1230	27	0
1220~1180	26	0
1170~1130	25	0
1120~1090	24	0
1080~1040	23	0
1030~1000	22	0
990~950	21	0
940~910	20	0
900~860	19	0
850~820	18	0
810~770	17	0
760~730	16	0
720~680	15	0
670~640	14	0
630~590	13	0
580~550	12	0
540~500	11	0
490~460	10	0
450~410	9	0
400~370	8	0
360~320	7	0
310~280	6	0
270~230	5	0
220~190	4	0
180~140	3	0
130~100	2	0
90~80	1	0

     The "Lost Frame End Error" problem still exists. Please help to check if there is any problem with this configuration and what could possibly be the cause of the problem?

Best regards
lin