On 23/01/2025 16:41, Andrew Lunn wrote: > On Wed, Jan 22, 2025 at 11:02:14PM +0000, Chris Packham wrote: >> Hi Andrew, >> >> On 23/01/2025 10:47, Andrew Lunn wrote: >>>> I believe the POLL_SEL configuration actually affects an internal port >>>> polling unit. From the datasheets I have it seems pretty configurable, you >>>> can tell it which phy registers to poll and what values indicate link >>>> up/down (the defaults are conveniently setup to match the Realtek PHYs). >>> You need to disable this. The linux PHY driver is driving the PHY, and >>> the hardware has no idea what Linux is doing. Say the driver has >>> changed the page to read a temperature sensor, when the switch does a >>> poll. Rather than reading the link status, it gets some random value >>> from the page containing the temperature sensor. >> There's a mask that can be set via a register that can disable polling >> for a port. The trick will be deciding when to do so. > On probe. And leave is disabled. phylink will provide you with all the > information you need about link up, what the link speed is etc. There > is no need for PPU. Works for me :P.
