diff options
| author |   Florian Fainelli <f.fainelli@gmail.com> | 2023-05-08 16:17:49 -0700 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2023-05-09 20:25:52 -0700 |
| commit | 582dbb2cc1a0a7427840f5b1e3c65608e511b061 (patch) | |
| tree | b12b7fa0ef79a0e3d6c32364aa00493df61241c9 /drivers | |
| parent | net: Fix load-tearing on sk->sk_stamp in sock_recv_cmsgs(). (diff) | |
| download | wireguard-linux-582dbb2cc1a0a7427840f5b1e3c65608e511b061.tar.xz wireguard-linux-582dbb2cc1a0a7427840f5b1e3c65608e511b061.zip | |
net: phy: bcm7xx: Correct read from expansion register
Since the driver works in the "legacy" addressing mode, we need to write
to the expansion register (0x17) with bits 11:8 set to 0xf to properly
select the expansion register passed as argument.
Fixes: f68d08c437f9 ("net: phy: bcm7xxx: Add EPHY entry for 72165")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230508231749.1681169-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/phy/bcm-phy-lib.h | 5 | ||||
| -rw-r--r-- | drivers/net/phy/bcm7xxx.c | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/phy/bcm-phy-lib.h b/drivers/net/phy/bcm-phy-lib.h index 9902fb182099..729db441797a 100644 --- a/drivers/net/phy/bcm-phy-lib.h +++ b/drivers/net/phy/bcm-phy-lib.h @@ -40,6 +40,11 @@ static inline int bcm_phy_write_exp_sel(struct phy_device *phydev, return bcm_phy_write_exp(phydev, reg | MII_BCM54XX_EXP_SEL_ER, val); } +static inline int bcm_phy_read_exp_sel(struct phy_device *phydev, u16 reg) +{ + return bcm_phy_read_exp(phydev, reg | MII_BCM54XX_EXP_SEL_ER); +} + int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val); int bcm54xx_auxctl_read(struct phy_device *phydev, u16 regnum); diff --git a/drivers/net/phy/bcm7xxx.c b/drivers/net/phy/bcm7xxx.c index 06be71ecd2f8..f8c17a253f8b 100644 --- a/drivers/net/phy/bcm7xxx.c +++ b/drivers/net/phy/bcm7xxx.c @@ -486,7 +486,7 @@ static int bcm7xxx_16nm_ephy_afe_config(struct phy_device *phydev) bcm_phy_write_misc(phydev, 0x0038, 0x0002, 0xede0); /* Read CORE_EXPA9 */ - tmp = bcm_phy_read_exp(phydev, 0x00a9); + tmp = bcm_phy_read_exp_sel(phydev, 0x00a9); /* CORE_EXPA9[6:1] is rcalcode[5:0] */ rcalcode = (tmp & 0x7e) / 2; /* Correct RCAL code + 1 is -1% rprogr, LP: +16 */ |