linux-kernel - Re: PTP clock driver for FSL DPAA

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Date:   Tue, 22 May 2018 07:37:15 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     "Y.b. Lu" <yangbo.lu@....com>
Cc:     Madalin-cristian Bucur <madalin.bucur@....com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Xiaobo Xie <xiaobo.xie@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: PTP clock driver for FSL DPAA

On Tue, May 22, 2018 at 10:07:20AM +0000, Y.b. Lu wrote:
> I'm going to make a PTP clock driver patch for FSL DPAA ethernet controller. (drivers/net/ethernet/freescale/dpaa/)
> Actually the 1588 timer module on FSL DPAA is same with the one on FSL eTSEC in hardware.(whose PTP clock driver is drivers/net/ethernet/freescale/gianfar_ptp.c)
> 
> So there are two options for me I think.
> Option #1, just make a dpaa_ptp.c driver which will be almost same with gianfar_ptp.c.
> Option #2, try to reuse gianfar_ptp.c driver by reworking it as a common driver, renaming it, and putting it to a common place (drivers/ptp/ or still drivers/net/ethernet/freescale/).

If you can make it work, #2 sounds like the best solution.

Thanks,
Richard