netdev - Re: [PATCH net] r8169: fix rtl8168h rx crc error

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Message-ID: <20230322082104.y6pz7ewu3ojd3esh@soft-dev3-1>
Date:   Wed, 22 Mar 2023 09:21:04 +0100
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     ChunHao Lin <hau@...ltek.com>
CC:     <hkallweit1@...il.com>, <netdev@...r.kernel.org>,
        <nic_swsd@...ltek.com>
Subject: Re: [PATCH net] r8169: fix rtl8168h rx crc error

The 03/22/2023 14:45, ChunHao Lin wrote:
> 
> When link speed is 10 Mbps and temperature is under -20°C, rtl8168h may
> have rx crc error. Disable phy 10 Mbps pll off to fix this issue.

Don't forget to add the fixes tag.
Another comment that I usually get is to replace hardcoded values with
defines, but on the other side I can see that this file already has
plently of hardcoded values.

Reviewed-by: Horatiu Vultur <horatiu.vultur@...rochip.com>

> 
> Signed-off-by: ChunHao Lin <hau@...ltek.com>
> ---
>  drivers/net/ethernet/realtek/r8169_phy_config.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/ethernet/realtek/r8169_phy_config.c b/drivers/net/ethernet/realtek/r8169_phy_config.c
> index 930496cd34ed..b50f16786c24 100644
> --- a/drivers/net/ethernet/realtek/r8169_phy_config.c
> +++ b/drivers/net/ethernet/realtek/r8169_phy_config.c
> @@ -826,6 +826,9 @@ static void rtl8168h_2_hw_phy_config(struct rtl8169_private *tp,
>         /* disable phy pfm mode */
>         phy_modify_paged(phydev, 0x0a44, 0x11, BIT(7), 0);
> 
> +       /* disable 10m pll off */
> +       phy_modify_paged(phydev, 0x0a43, 0x10, BIT(0), 0);
> +
>         rtl8168g_disable_aldps(phydev);
>         rtl8168g_config_eee_phy(phydev);
>  }
> --
> 2.37.2
> 

-- 
/Horatiu