hi,all friends, my board is imx6q_sabrelite and i want to know that ,how can we Confirm that the MIPI CSI input data format and IPU packing mode to be the same?

[alvinyuan]

hi,all friends,

     my board is imx6q_sabrelite ,and i want to know that ,how can we Confirm that the MIPI CSI input data format and IPU packing mode to be the same? thank you very much,

[qiang_li-mpu_se · Accepted solution]

MIPI data type was set in register "IPU_CSIx_DI", and IPU data format is set in register "IPU_CSIx_SENS_CONF".

[alvinyuan]

hi,dear Li, thank you for your reply very much!

and now , i can receive raw data（3264x2448 10bit） from ov8858_mipi , but when i open the raw data with SensorStudio，the performance is just as follows,yes,it is obviously wrong!

then, i check  the value of register MIPI_CSI_PHY_STATE returned ,it is 0x6f0 ,not 0x300/0x330,

An external 24Mhz crystal be added to the ov8858_mipi sensor instead of the 24Mhz mclk come from imx6 board,is it will be the reason of " 0x6f0" ?  thank you !

[qiang_li-mpu_se]

Hi Alvin, the data format in memory depends on IPU_CSIx_DI setting "40.5.1 General/Arbitrary Data Reception", "Data in receiver's buffer", and the PC side tool should also use the same format to view.

[alvinyuan]

Hi Li,

now i connect the 24Mhz mclk come from imx6q board instead of  external 24Mhz  Crystal to sensor ,but the value of register MIPI_CSI_PHY_STATE  is still 0x6f0！and i do not know that if it will take change of the raw data i get?!

and now assume that the "0x6f0" make no difference, i get data through reading /dev/video1,

so,according to IPU0_CSI1_DI,should i change the bit  sequence of the raw data I get?

[qiang_li-mpu_se]

Hi Alvin, if the "MIPI_CSI_PHY_STATE" is 0x6f0, you will fail to capture data from MIPI CSI2, I think you should make sure you had read the MIPI_CSI_PHY_STATE when MIPI CSI2 is working.

In you camera driver, you should call mipi_csi2_reset(), then enable your camera input, then print out the MIPI_CSI_PHY_STATE.

The IPU_CSI_DI setting will affect the data package in memory, to use "RAW10" or other format, it depends on your camera input format.