How to use custom CSI camera

[ret7020]

I have a PI Camera Zero built on OV5647. I tried to use it with my board (70415 revision). I tried just connect camera and use /mnt/system/usr/bin/sensor_test, but got following log:

[sys_vi_init]-41: MMF Version:540e9435a-musl_riscv64
[SAMPLE_COMM_SNS_ParseIni]-2185: Parse /mnt/data/sensor_cfg.ini
[parse_source_devnum]-1778: devNum =  1
[parse_sensor_name]-1859: sensor =  OV_OV5647_MIPI_2M_30FPS_10BIT
[parse_sensor_busid]-1888: bus_id =  4
[parse_sensor_i2caddr]-1899: sns_i2c_addr =  36
[parse_sensor_mipidev]-1910: mipi_dev =  0
[parse_sensor_laneid]-1921: Lane_id =  4, 3, 2, -1, -1
[parse_sensor_pnswap]-1932: pn_swap =  0, 0, 0, 0, 0
[parse_sensor_mclken]-1954: mclk_en =  1
[parse_sensor_mclk]-1965: mclk =  1
[SAMPLE_PLAT_SYS_INIT]-72: common pool[0] BlkSize 5652480
ISP Vipipe(0) Allocate pa(0x8c020000) va(0x0x3fd9ad3000) size(291424)
stSnsrMode.u16Width 2560 stSnsrMode.u16Height 1440 25.000000 wdrMode 0 pstSnsObj 0xedae0
[SAMPLE_COMM_VI_StartMIPI]-494: sensor 0 stDevAttr.devno 0

Then I tried to apply source from "draft pull request", but it seems not working, because it use incorrect(incorrect for new boards) pins for camera.
Is it even possible to run this camera on the board?

[niyazFattahov]

Hello. I have same problem with ov5647.
Did you try i2cdetect -y 4 command ? For me does not show ov5647 address. I also have voltage drops on i2c pins (~ 1.2V instead 1.8V)

[ret7020]

It always detects some busy address (when OV5647 connected, when GC4653 and even nothing connected):

[ret7020]

I think we need to check firmware and some csi camera related source for Milk V Duo S board. It have J2 connector specially for OV5647 camera:

J2 is a 15-pin 1.0mm pitch connector compatible with the Raspberry Pi camera interface. It currently supports the OV5647 camera used on the Raspberry Pi.

[niyazFattahov]

after removing pulldown resistors ov5647 camera can be recognized and configured by this board
#31 (comment)

[ret7020]

Thanks, I will try to reproduce