On Tue, 2015-01-06 at 23:29 -0600, Xie Shaohui-B21989 wrote: > > > > +- interrupts > > > > + Usage: optional > > > > + Value type: <prop-encoded-array> > > > > + Definition: Event interrupt of external MDIO controller. > > > > + 1 Gb/s MDIO and 10 Gb/s MDIO has one interrupt > > > > respectively. > > > > I'm confused by "respectively" here. Does fsl,fman-memac-mdio have two > > interrupts (one for 1 Gb/s and one for 10 Gb/s)? > [S.H] We use two MDIO controllers for external PHY management. One for 1 Gb/s, > One for 10 Gb/s, and two MDIO interrupts connected to MPIC.
If there can be two interrupts you need to make that clear and specify the order. Is it possible for one MDIO controller to have an interrupt connected but not the other, on the same system? How would you represent that in the device tree? If there are two MDIO controllers why are they in the same node? > Does "optional" mean it's used if and > > only if external MDIO is used, or is it optional even with external MDIO? > > I see > > it's not present in the example -- do we not have a real example that has > > the > > interrupt? > [S.H] "optional" means it's available on hardware, but MDIO driver does not > use interrupt. > So we don't have a real example. <record type="broken">The device tree describes the hardware, not the driver</record> -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
