Re: [PATCH v4 4/7] net: phy: Add 10BASE-T1L support in phy-c45
From: Andrew Lunn <andrew@lunn.ch>
Date: 2021-12-11 21:07:59
Also in:
linux-devicetree, lkml
+ ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_EXTABLE); + if (ret < 0) + return ret; + + if (ret & MDIO_PMA_EXTABLE_BT1)
This pattern of reading the MDIO_PMA_EXTABLE register and then looking
for bit MDIO_PMA_EXTABLE_BT1 happens a lot. It is not something which
is expected to change is it? So i wounder if it should be read once
and stored away?
Andrew