[net] net: phy: bcm7xx: Correct read from expansion register
Commit Message
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>
---
drivers/net/phy/bcm-phy-lib.h | 5 +++++
drivers/net/phy/bcm7xxx.c | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
Comments
On Mon, May 08, 2023 at 04:17:49PM -0700, Florian Fainelli wrote:
> 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>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Mon, 8 May 2023 16:17:49 -0700 you wrote:
> 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>
>
> [...]
Here is the summary with links:
- [net] net: phy: bcm7xx: Correct read from expansion register
https://git.kernel.org/netdev/net/c/582dbb2cc1a0
You are awesome, thank you!
@@ -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);
@@ -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 */