5.15-stable review patch. If anyone has any objections, please let me know.
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From: Michel Alex Alex.Michel@wiedemann-group.com
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 --- drivers/net/phy/dp83822.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/phy/dp83822.c +++ b/drivers/net/phy/dp83822.c @@ -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)