On Thu, 2019-08-08 at 17:35 +0200, Andrew Lunn wrote: > [External] > > On Thu, Aug 08, 2019 at 03:30:16PM +0300, Alexandru Ardelean wrote: > > Both ADIN1200 & ADIN1300 support Clause 45 access. > > The Extended Management Interface (EMI) registers are accessible via both > > Clause 45 (at register MDIO_MMD_VEND1) and using Clause 22. > > > > However, the Clause 22 MMD access operations differ from the implementation > > in the kernel, in the sense that it uses registers ExtRegPtr (0x10) & > > ExtRegData (0x11) to access Clause 45 & EMI registers. > > It is not that they differ from what the kernel supports. Its that > they differ from what the Standard says they should use. These > registers are defined in 802.3, part of C22, and this hardware > implements the standard incorrectly.
Will update comment. I did not find a document describing this as a standard. But, I admit I am terrible when finding some docs. I only found this presentation from a while back: http://www.ieee802.org/3/efm/public/nov02/oam/pannell_oam_1_1102.pdf It seemed more like a proposal. Thanks Alex > > Andrew
