Re: [PATCH v2 2/2] net: ethernet: Add driver for Sunplus SP7021

[Andrew Lunn]

On Fri, Nov 26, 2021 at 04:12:46PM +0000, Wells Lu 呂芳騰 wrote:
> Hi Andrew,
> 
> 
> From data provided by ASIC engineer, MAC of SP7021 only
> reads the 4 registers of PHY:
> 0: Control register
> 1: Status register

This is the register which has latching of the link
status. genphy_update_link() expects this latching behaviour, and if
the hardware reads the register, that behaviour is not going to
happen.

	Andrew