Re: [PATCH net-next v2 3/3] net: phy: mediatek: add driver for built-in 2.5G ethernet PHY on MT7988

[SkyLake Huang (黃啟澤)]

On Wed, 2025-02-19 at 09:33 +0000, Russell King (Oracle) wrote:
> 
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> 
> On Wed, Feb 19, 2025 at 04:39:10PM +0800, Sky Huang wrote:
> > +static int mt798x_2p5ge_phy_config_init(struct phy_device *phydev)
> > +{
> > +     struct pinctrl *pinctrl;
> > +     int ret;
> > +
> > +     /* Check if PHY interface type is compatible */
> > +     if (phydev->interface != PHY_INTERFACE_MODE_INTERNAL)
> > +             return -ENODEV;
> > +
> > +     ret = mt798x_2p5ge_phy_load_fw(phydev);
> > +     if (ret < 0)
> > +             return ret;
> 
> Firmware should not be loaded in the .config_init method. The above
> call will block while holding the RTNL which will prevent all other
> network configuration until the firmware has been loaded or the load
> fails.
> 
> Thanks.
> 
> --
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> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
Hi Russell,
mt798x_p5ge_phy_load_fw() will only load firmware once after driver is
probed through priv->fw_loaded. And actually, firmware loading
procedure only takes about 11ms. This was discussed earlier in:
https://patchwork.kernel.org/project/linux-mediatek/patch/20240520113456.21675-6-SkyLake.Huang@xxxxxxxxxxxx/#25856462
https://patchwork.kernel.org/project/linux-mediatek/patch/20240520113456.21675-6-SkyLake.Huang@xxxxxxxxxxxx/#25857174

BRs,
Sky