[PATCH net] net: phy: realtek: Fix rtl8211f_config_init() for RTL8211F(D)(I)-VD-CG PHY

[PATCH net] net: phy: realtek: Fix rtl8211f_config_init() for RTL8211F(D)(I)-VD-CG PHY

[Siddharth Vadapalli]

Commit bb726b753f75 ("net: phy: realtek: add support for
RTL8211F(D)(I)-VD-CG") extended support of the driver from the existing
support for RTL8211F(D)(I)-CG PHY to the newer RTL8211F(D)(I)-VD-CG PHY.

While that commit indicated that the RTL8211F_PHYCR2 register is not
supported by the "VD-CG" PHY model and therefore updated the corresponding
section in rtl8211f_config_init() to be invoked conditionally, the call to
"genphy_soft_reset()" was left as-is, when it should have also been invoked
conditionally. This is because the call to "genphy_soft_reset()" was first
introduced by the commit 0a4355c2b7f8 ("net: phy: realtek: add dt property
to disable CLKOUT clock") since the RTL8211F guide indicates that a PHY
reset should be issued after setting bits in the PHYCR2 register.

As the PHYCR2 register is not applicable to the "VD-CG" PHY model, fix the
rtl8211f_config_init() function by invoking "genphy_soft_reset()"
conditionally based on the presence of the "PHYCR2" register.

Fixes: bb726b753f75 ("net: phy: realtek: add support for RTL8211F(D)(I)-VD-CG")
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---

Hello,

This patch is based on Linux 6.8-rc5.

Regards,
Siddharth.

 drivers/net/phy/realtek.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 481c79fbd6eb..1fa70427b2a2 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -413,9 +413,11 @@ static int rtl8211f_config_init(struct phy_device *phydev)
 				ERR_PTR(ret));
 			return ret;
 		}
+
+		return genphy_soft_reset(phydev);
 	}
 
-	return genphy_soft_reset(phydev);
+	return 0;
 }
 
 static int rtl821x_suspend(struct phy_device *phydev)
-- 
2.34.1


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Re: [PATCH net] net: phy: realtek: Fix rtl8211f_config_init() for RTL8211F(D)(I)-VD-CG PHY

[Simon Horman]

On Tue, Feb 20, 2024 at 12:30:07PM +0530, Siddharth Vadapalli wrote:
> Commit bb726b753f75 ("net: phy: realtek: add support for
> RTL8211F(D)(I)-VD-CG") extended support of the driver from the existing
> support for RTL8211F(D)(I)-CG PHY to the newer RTL8211F(D)(I)-VD-CG PHY.
> 
> While that commit indicated that the RTL8211F_PHYCR2 register is not
> supported by the "VD-CG" PHY model and therefore updated the corresponding
> section in rtl8211f_config_init() to be invoked conditionally, the call to
> "genphy_soft_reset()" was left as-is, when it should have also been invoked
> conditionally. This is because the call to "genphy_soft_reset()" was first
> introduced by the commit 0a4355c2b7f8 ("net: phy: realtek: add dt property
> to disable CLKOUT clock") since the RTL8211F guide indicates that a PHY
> reset should be issued after setting bits in the PHYCR2 register.
> 
> As the PHYCR2 register is not applicable to the "VD-CG" PHY model, fix the
> rtl8211f_config_init() function by invoking "genphy_soft_reset()"
> conditionally based on the presence of the "PHYCR2" register.
> 
> Fixes: bb726b753f75 ("net: phy: realtek: add support for RTL8211F(D)(I)-VD-CG")
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>

Reviewed-by: Simon Horman <horms@kernel.org>


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Re: [PATCH net] net: phy: realtek: Fix rtl8211f_config_init() for RTL8211F(D)(I)-VD-CG PHY

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Tue, 20 Feb 2024 12:30:07 +0530 you wrote:
> Commit bb726b753f75 ("net: phy: realtek: add support for
> RTL8211F(D)(I)-VD-CG") extended support of the driver from the existing
> support for RTL8211F(D)(I)-CG PHY to the newer RTL8211F(D)(I)-VD-CG PHY.
> 
> While that commit indicated that the RTL8211F_PHYCR2 register is not
> supported by the "VD-CG" PHY model and therefore updated the corresponding
> section in rtl8211f_config_init() to be invoked conditionally, the call to
> "genphy_soft_reset()" was left as-is, when it should have also been invoked
> conditionally. This is because the call to "genphy_soft_reset()" was first
> introduced by the commit 0a4355c2b7f8 ("net: phy: realtek: add dt property
> to disable CLKOUT clock") since the RTL8211F guide indicates that a PHY
> reset should be issued after setting bits in the PHYCR2 register.
> 
> [...]

Here is the summary with links:
  - [net] net: phy: realtek: Fix rtl8211f_config_init() for RTL8211F(D)(I)-VD-CG PHY
    https://git.kernel.org/netdev/net/c/3489182b11d3

You are awesome, thank you!
-- 
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