Re: [RFC PATCH net-next 8/9] net: dsa: microchip: ksz9477: add Pulse Per Second (PPS) support

[Vladimir Oltean]

On Mon, Oct 19, 2020 at 07:24:34PM +0200, Christian Eggers wrote:
>  static int ksz9477_ptp_enable(struct ptp_clock_info *ptp, struct ptp_clock_request *req, int on)
>  {
> -	return -ENOTTY;
> +	struct ksz_device *dev = container_of(ptp, struct ksz_device, ptp_caps);
> +	int ret;
> +
> +	switch (req->type) {
> +	case PTP_CLK_REQ_PPS:
> +		mutex_lock(&dev->ptp_mutex);
> +		ret = ksz9477_ptp_enable_pps(dev, on);
> +		mutex_unlock(&dev->ptp_mutex);
> +		return ret;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	return 0;
>  }

Nope, this is not what you're looking for. Please implement
PTP_CLK_REQ_PEROUT.