Hi Andrew, Quoting Andrew Lunn (2020-05-26 19:01:00) > On Tue, May 26, 2020 at 06:22:52PM +0200, Antoine Tenart wrote: > > > > This series aims at reducing the waiting time between MDIO transactions > > when using the MSCC MIIM MDIO controller. > > There are a couple of other things you can look at: > > Can you disable the pre-amble on the MDIO transaction. It requires > that both the bus master and all devices on the bus support it, but > when it is usable, you half the number of bits sent over the wire. > > Can you control the frequency of MDC? 802.3 says 2.5MHz, but many > devices support higher speeds. Again, you need all devices on the bus > to support the speed. > > When accessing raw TDR data for cable tests i also have a lot of PHY > accesses. I implemented both of these for the FEC MDIO bus, and made > it a lot faster.
Thanks for the tips! Antoine -- Antoine Ténart, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
