Re: [PATCH net-next v3 6/8] net: phy: mscc: timestamping and PHC support

[Quentin Schulz <foss@0leil.net>]

Hi Antoine,

On 2020-06-19 14:22, Antoine Tenart wrote:
[...]
> @@ -999,9 +1553,35 @@ int vsc8584_ptp_probe(struct phy_device *phydev)
>  	if (!vsc8531->ptp)
>  		return -ENOMEM;
> 
> +	mutex_init(&vsc8531->phc_lock);
>  	mutex_init(&vsc8531->ts_lock);
> 
> +	/* Retrieve the shared load/save GPIO. Request it as non exclusive as
> +	 * the same GPIO can be requested by all the PHYs of the same 
> package.
> +	 * Ths GPIO must be used with the phc_lock taken (the lock is shared

Typo + wrong lock named in the comment, instead:

	 * This GPIO must be used with the gpio_lock taken (the lock is shared

Though technically both are taken when access to the GPIO is requested 
AFAICT.

Also on another note, maybe we could actually make vsc8531->base_addr be 
a part
of vsc85xx_shared_private structure.

We would still need to compute it to pass it to devm_phy_package_join 
but it can
easily be returned by vsc8584_get_base_addr instead of the current void 
and it'd
put all the things used for all PHYs in the package at the same place.

Thanks,
Quentin