Hi Rob, On 2021/8/24, 8:13 PM, "Rob Herring" <robh@xxxxxxxxxx> wrote: On Mon, Aug 23, 2021 at 03:02:26PM +0800, Billy Tsai wrote: > > +properties: > > + compatible: > > + enum: > > + - aspeed,ast2600-adc0 > > + - aspeed,ast2600-adc1 > What's the difference between 0 and 1? Their trimming data, which is used to calibrate internal reference volage, locates in different address of OTP. Best Regards, Billy Tsai