Add DCMIPP support to Nucleo N6 #93394
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Add an instance for DCMIPP as well as devicetree definitions to allow plugging Raspberry Pi 22 pins or 15 pins shields via the csi_* devicetree labels. Signed-off-by: Josuah Demangeon <[email protected]>
On the Nucleo N6 board, extra delay is required to get the IMX335 respond to the I2C commands in time. This was observed with the st_b_cams_imx_mb1854 shield and the nucleo_n657x0_q board. Signed-off-by: Josuah Demangeon <[email protected]>
The "gpio-hog;" devicetree property configuring the "power enable" pin at boot was not working, due to being placed on a gpio-nexus. This is not supported and lead the gpio-hog inactive. Instead, let the board specify their CSI_IO0 and CSI_IO1 pin as GPIO hogs with status = "disabled", letting shields enable them and set the direction as needed. Signed-off-by: Josuah Demangeon <[email protected]>
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platform: STM32
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area: Shields
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I had this error at startup:
Which is due to
gpio-hog;not working when placed on agpio-nexus. I tested by probing the FPC, the pinout from the user manual is correct:It still does not work because UVC does not use the crop/compose API so the frame is too big for the RAM, and the format is the one from the raw sensor. It will need more patch to get the image through end-to-end.
Not tested with STM32N6570-DK as I do not have it.
Thank you!