On Mon, Jan 08, 2018 at 03:53:12PM +0100, Andrew Lunn wrote: > On Mon, Jan 08, 2018 at 02:45:48PM +0000, Graeme Gregory wrote: > > On Thu, Jan 04, 2018 at 05:20:36PM +0100, Andrew Lunn wrote: > > > > > I already agreed with 'reg' being awkward in the later emails. > > > > > Wouldn't _ADR be more appropriate to specify PHY address on MDIO bus? > > > > > > > > > Ah it is an actual address, then yes _ADR is probably more appropriate. > > > > > > Newbie ACPI question. What is the definition of an address? > > > > > > In this cause, we are talking about an address of a device on an MDIO > > > bus. It takes a value between 0 and 31. > > > > > > How are IC2 device addresses represented in ACPI? MDIO devices and I2C > > > devices are pretty similar. So it would make sense to use the same as > > > what I2C uses. > > > > > Too big (and has table) to sensibly quote, but defined in ACPI spec > > > > 6.1.1 _ADR (Address) > > > > Ive never though been quite sure if that is just an example list of > > address types or its supposed to be canonical (in which case some ECRs > > are needed to the spec). > > Hi Graeme > > I took a quick look at version 6.2, and noticed i2c devices use > _ADR(). So using it for MDIO seems O.K. > > However, i2c, spi and uart devices all seem to be described using > GenericSerialBus. Maybe the correct way to describe MDIO devices is to > also use GenericSerialBus? > I am not familiar with MDIO, but if its similar or a specific implementation of a serial bus that does sound sane! Graeme
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