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Message-ID: <20210407165407.GA27820@linux.intel.com>
Date:   Thu, 8 Apr 2021 00:54:07 +0800
From:   Wong Vee Khee <vee.khee.wong@...ux.intel.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Voon Weifeng <weifeng.voon@...el.com>,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 1/1] net: stmmac: Add support for external
 trigger timestamping

On Wed, Apr 07, 2021 at 04:21:09PM +0200, Andrew Lunn wrote:
> On Wed, Apr 07, 2021 at 10:15:37PM +0800, Wong Vee Khee wrote:
> > From: Tan Tee Min <tee.min.tan@...el.com>
> > 
> > The Synopsis MAC controller supports auxiliary snapshot feature that
> > allows user to store a snapshot of the system time based on an external
> > event.
> > 
> > This patch add supports to the above mentioned feature. Users will be
> > able to triggered capturing the time snapshot from user-space using
> > application such as testptp or any other applications that uses the
> > PTP_EXTTS_REQUEST ioctl request.
> 
> You forgot to Cc: the PTP maintainer.
>

Will Cc Richard Cochran on v2.
 
> > @@ -159,6 +163,37 @@ static int stmmac_enable(struct ptp_clock_info *ptp,
> >  					     priv->systime_flags);
> >  		spin_unlock_irqrestore(&priv->ptp_lock, flags);
> >  		break;
> > +	case PTP_CLK_REQ_EXTTS:
> > +		priv->plat->ext_snapshot_en = on;
> > +		mutex_lock(&priv->aux_ts_lock);
> > +		acr_value = readl(ptpaddr + PTP_ACR);
> > +		acr_value &= ~PTP_ACR_MASK;
> > +		if (on) {
> > +			/* Enable External snapshot trigger */
> > +			acr_value |= priv->plat->ext_snapshot_num;
> > +			acr_value |= PTP_ACR_ATSFC;
> > +			pr_info("Auxiliary Snapshot %d enabled.\n",
> > +				priv->plat->ext_snapshot_num >>
> > +				PTP_ACR_ATSEN_SHIFT);
> 
> dev_dbg()?
> 
> > +			/* Enable Timestamp Interrupt */
> > +			intr_value = readl(ioaddr + GMAC_INT_EN);
> > +			intr_value |= GMAC_INT_TSIE;
> > +			writel(intr_value, ioaddr + GMAC_INT_EN);
> > +
> > +		} else {
> > +			pr_info("Auxiliary Snapshot %d disabled.\n",
> > +				priv->plat->ext_snapshot_num >>
> > +				PTP_ACR_ATSEN_SHIFT);
> 
> dev_dbg()?
> 
> Do you really want to spam the kernel log with this?
>

Thanks for the review.
I will switch this to netdev_dbg().
 

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