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FDMA and VCAP) > 3) Add support for lan969x FDMA > 4) Add support for lan969x VCAP > > == Lan969x in short: > > The lan969x Ethernet switch family [1] provides a rich set of > switching features and port configurations (up to 30 ports) from 10Mbps > to 10Gbps, with support for RGMII, SGMII, QSGMII, USGMII, and USXGMII, > ideal for industrial & process automation infrastructure applications, > transport, grid automation, power substation automation, and ring & > intra-ring topologies. The LAN969x family is hardware and software > compatible and scalable supporting 46Gbps to 102Gbps switch bandwidths. > > == Preparing Sparx5 for lan969x: > > The lan969x switch chip reuses many of the IP's of the Sparx5 switch > chip, therefore it has been decided to add support through the existing > Sparx5 driver, in order to avoid a bunch of duplicate code. However, in > order to reuse the Sparx5 switch driver, we have to introduce some > mechanisms to handle the chip differences that are there. These > mechanisms are: > > - Platform match data to contain all the differences that needs to > be handled (constants, ops etc.) > > - Register macro indirection layer so that we can reuse the existing > register macros. > > - Function for branching out on platform type where required. > > In some places we ops out functions and in other places we branch on the > chip type. Exactly when we choose one over the other, is an estimate in > each case. > > After this series is applied, the Sparx5 driver will be prepared for > lan969x and still function exactly as before. > > == Patch breakdown: > > Patch #1 adds private match data > > Patch #2 adds register macro indirection layer > > Patch #3-#5 does some preparation work > > Patch #6-#8 adds chip constants and updates the code to use them > > Patch #9-#14 adds and uses ops for handling functions differently on the > two platforms. > > Patch #15 adds and uses a macro for branching out on the chip type > > [1] https://www.microchip.com/en-us/product/lan9698 > The series seems ok to me. I'm not personally a fan of the implicit local variables used by macros. I do not know how common that is, or what others on the list feel about this. For everything else: Reviewed-by: Jacob Keller