Re: [PATCH v2 3/7] arm64: dts: freescale: Add Lino iMX93

[Francesco Dolcini]

Hello Andrew,
thanks for the review.

On Tue, Sep 15, 2026 at 03:19:45PM +0200, Andrew Lunn wrote:
> > +	ethphy1: ethernet-phy@1 {
> > +		reg = <1>;
> > +		interrupt-parent = <&adapter_gpio_expander>;
> > +		interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
> 
> Falling interrupts is probably wrong. They are normally level, active
> low.


It is wanted. The I2C ioexpander component used for the interrupt
supports only edge interrupts. We tested it and it works fine like that.

The linux driver is now able to emulate the level interrupt in software,
however ...
 - the DT is shared with other project, it is a HW description and it is
   not supposed to pair with the specific linux driver
 - when we tested it, the SW emulation was not really reliable, and we
   prefer to play on the safe side

Francesco