Camera board • RPI5: powering on camera and CSI2

Hi experts,

Thanks to everyone who helped me on this forum, I was able to get the whole camera -> CSI2 receiver -> ISP pipeline to work in QNX OS for RPI4. I'm planning to open source my work probably this year.

Now I'm trying to get camera module 3 (imx708) to work in QNX for RPI5. I need to power on camera and CSI2. I see in device tree that cam0_reg is tied to gpio 34 on RPI1 chip: "gpio = <&rp1_gpio 34 0>; // CD0_IO0_MICCLK, to MIPI 0 connector".

Question: how would I set gpio 34 to high for RPI5, and do I need to do something special to power on CSI2?

I know for RPI4, I used mailbox to set CAM_GPIO to high to power on the camera and set CSI2 power domain to power on CSI2.

On another note, I was able to read the registers of ISP i.e. PiSP BE Thanks for the clear documentation of PiSP for RPI5. It was a nightmare to get VCHIQ to work on RPI4 QNX.

Statistics: Posted by kfcgoose — Mon Feb 10, 2025 10:15 pm — Replies 0 — Views 30

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