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net: phy: dp83822: Fix reset pin definitions

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commit de96f6a3003513c796bbe4e23210a446913f5c00 upstream.

This change fixes a rare issue where the PHY fails to detect a link
due to incorrect reset behavior.

The SW_RESET definition was incorrectly assigned to bit 14, which is the
Digital Restart bit according to the datasheet. This commit corrects
SW_RESET to bit 15 and assigns DIG_RESTART to bit 14 as per the
datasheet specifications.

The SW_RESET define is only used in the phy_reset function, which fully
re-initializes the PHY after the reset is performed. The change in the
bit definitions should not have any negative impact on the functionality
of the PHY.

v2:
- added Fixes tag
- improved commit message

Cc: stable@vger.kernel.org
Fixes: 5dc39fd5ef35 ("net: phy: DP83822: Add ability to advertise Fiber connection")
Signed-off-by: Alex Michel <alex.michel@wiedemann-group.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Message-ID: <AS1P250MB0608A798661549BF83C4B43EA9462@AS1P250MB0608.EURP250.PROD.OUTLOOK.COM>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michel Alex 2024-10-16 12:11:15 +00:00 • committed by Ksawlii
parent 49c852ee24
commit 5f1508a796
1 changed files with 2 additions and 2 deletions
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4
drivers/net/phy/dp83822.c
View file

@ -40,8 +40,8 @@
/* Control Register 2 bits */
#define DP83822_FX_ENABLE BIT(14)
#define DP83822_HW_RESET BIT(15)
#define DP83822_SW_RESET BIT(14)
#define DP83822_SW_RESET BIT(15)
#define DP83822_DIG_RESTART BIT(14)
/* PHY STS bits */
#define DP83822_PHYSTS_DUPLEX BIT(2)