Re: [PATCH] net: phy: Add driver for Motorcomm Quad 2.5GbE phy

[Kyle Switch]

On 7/15/26 05:46, Andrew Lunn wrote:
>> +static inline int ytphy_top_write(struct phy_device *phydev, u32 regnum,
>> +				  u16 val)
>> +{
>> +	struct yt8521_priv *priv = phydev->priv;
>> +	struct mii_bus *bus = phydev->mdio.bus;
>> +
>> +	return bus->write(bus, priv->top_phy_addr, regnum, val);
>> +}
> 
> Please could you explain the architecture in detail. It seems like you
> are accessing registers of some other device on the bus.
> 
> Maybe you need to use the code in phy_package.c?

Ans: YT8824 contains top extend reg space, and the addr is fixed, for 
internal phy8824 the value is 9, and external phy8824 is (baseaddr + 4).
> 
>       Andrew