On Thu, Apr 29, 2021 at 02:21:27PM +0800, DENG Qingfang wrote: > Add support for MediaTek PHYs found in MT7530 and MT7531 switches. > The initialization procedure is from the vendor driver, but due to lack > of documentation, the function of some register values remains unknown. > > Signed-off-by: DENG Qingfang <dqfext@xxxxxxxxx> Reviewed-by: Andrew Lunn <andrew@xxxxxxx> > + > + /* Enable HW auto downshift */ > + phy_modify_paged(phydev, MTK_PHY_PAGE_EXTENDED, 0x14, 0, BIT(4)); As a follow up patch, you could add support for controlling this via a PHY tunable. Andrew