Hello, N00b here. I purchased an "opensource" firefly RK3399 board[1] and I wanted to attach a pair of cameras to the MIPI-CSI2 interfaces. I have not yet made a purchase of 2 cameras, but I have inquired into getting some customized camera modules from alibaba. My problem is that I recently learned that camera modules need to be supported in an unknown to me fashion in order to get them to work. Furthermore, the MIPI-CSI2 interface also needs to be supported in addition to the ISP (which if memory serves stands for Image Sensor Processor ( not Internet Service Provider :) )). I imagined when I bought the board, as a result of the advertising[2], that the camera interfaces were up and running. Since then it seems that some firmware[3] is necessary to use the ISP and that the driver is incomplete. The firmware is located somewhere in here[4]. Others[5] report success with a little hacking of what appears to be the kernel. Sadly, another person says that dual cameras are not working at all due to a hardware limitation and after that in fixed, a software limitation of some sort[6][7], although this is on android, which limits what you can do to diagnose the problem.
My questions are: What is the current status of MIPI-CSI2 support in Linux[8]? Assuming that that the firmware is not yet fully working what do I do to reverse engineer it? What would I need to do to add support in terms of a basic driver for the ISP and the MIPI-CSI2 interface on the board? What would I need to do to add support for a new image sensor, preferably to mainline linux? It seems to that any other "opensource" board that I get would have similar problems so let me repeat, I already own a board, so I want to use it in spite of it's draw backs. I know this will be hard. I would like the 1-2-3 instruction and any other relevent documentation. RTFM type stuff. I can read, hack, become sick of it, and repeat. Thanks! PS: I cannot seem to find a way to get onto the linux kernel ML without it being blocked by the mail server admin due to the volume, although I did empty my mailbox frequently. So if necessary, please do forward this mail to them. Thanks! [1] http://en.t-firefly.com/product/rk3399.html [2] For example here: http://en.t-firefly.com/doc/case/info/id/210.html [3] http://bbs.t-firefly.com/forum.php?mod=viewthread&; tid=1934&extra=&highlight=camera&page=2 [4] https://gitlab.com/TeeFirefly/FireNow-Nougat/tree/firefly-rk3399 [5] http://bbs.t-firefly.com/forum.php?mod=viewthread&; tid=2099&extra=&highlight=CSI&page=2 [6] https://electronics.stackexchange.com/questions/393431/ dual-mipi-cameras-on-firefly-rk3399 [7] http://en.t-firefly.com/doc/product/info/287.html [8] I did just read a thread on this ML about the MIPI-CSI2 interface on an Allwinner board called "dt-bindings: media: Add Allwinner V3s Camera Sensor Interface (CSI)" I don't know if this relates to the RK3399's MIPI-CSI2 interfaces. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
