EVAL-AD5370 Overlay

jjbravo said:

I've successfully enabled the driver and compiled a kernel, but I'm very confused on how to make the overlay and enable it to be able to use the driver.

This makes us assume you are using this with a Raspberry Pi.

Is this correct?

You can use this example DT overlay from our tree for AD5686.

github.com/.../rpi-ad5686-overlay.dts

For general information about using overlays, you can search on the Raspberry Pi forums, sites. There should be plenty of info about it.

We haven't documented RPi specifics in our docs, since they can change quicker than we can update them.

Thanks

Alex

Thanks Alex.

Yes, this is for the RPi.

I copied the 5686 overlay, renamed it  and compiled it. Got one warning, but it compiled.

(root@rpi-build:/usr/src/linux_test/arch/arm/boot/dts/overlays# dtc -I dts -O dtb -o rpi-ad5370.dtbo rpi-ad5370-overlay.dts
rpi-ad5370.dtbo: Warning (unit_address_vs_reg): /fragment@0/__overlay__/fixedregulator@0: node has a unit name, but no reg property)

Do I need to do anything else?

As far as I can tell, you just need to make sure that the new overlay has all the correct settings for the chip, and then load it into the RPi.

And then you should see a /sys/bus/iio/devices/iio_device:0  or something like that.

But this all depends, which kernel you are using. We typically use our version of  the RPI kernel code here:

https://github.com/analogdevicesinc/linux/tree/rpi-4.19.y

Upstream RPi may work as well.

Thanks aardelean,

that's the one I used.

I'm not sure what the correct chip setting would be, that's why it would be great if ADI could help with the overlays at least. I understand it's probably too much to have them maintain the images.