Pin 90 conflict on BeagleBone Enhanced.

[s13n]

A couple of years ago a pin was added to davinci-mdio-default-pins in src/arm/ti/omap/am335x-bone-common.dtsi, apparently for supporting a PHY reset signal via GPIO. The selected GPIO is GPIO1_8 (uart0_ctsn), which is unused on most BeagleBone variants, but is used on the BBE for an interrupt input from the Gyro chip. This leads to a pin conflict with the Gyro driver.

I wonder why a PHY reset pin was added to a file that is common for all BeagleBones based on the AM335x, when most variants don't use it! In my opinion, this pin setting ended up in the wrong file!

[RobertCNelson]

Okay so on the BBE, we need to override mdio settings.. This PHY reset signal has been updated on the BeagleBone Black C3, and now newer D rev.. New Green "Eco"..

[RobertCNelson]

@s13n does ^ fix it for you?

[s13n]

How do you suggest I try this out? I am so far using the BeagleBone Black Debian 12.11 2025-06-30 IoT-VSCode (v6.15.x) image as-is. How am I supposed to apply the fix? I don't want to change anything else by applying too much.