linux-kernel - Re: [PATCH v4 09/10] net: eth: altera: add msgdma prefetcher

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Message-ID: <20200714085526.2bb89dc6@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Tue, 14 Jul 2020 08:55:26 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     "Ooi, Joyce" <joyce.ooi@...el.com>
Cc:     Thor Thayer <thor.thayer@...ux.intel.com>,
        "David S . Miller" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Dalon Westergreen" <dalon.westergreen@...ux.intel.com>,
        "Tan, Ley Foon" <ley.foon.tan@...el.com>,
        "See, Chin Liang" <chin.liang.see@...el.com>,
        "Nguyen, Dinh" <dinh.nguyen@...el.com>,
        "Westergreen, Dalon" <dalon.westergreen@...el.com>
Subject: Re: [PATCH v4 09/10] net: eth: altera: add msgdma prefetcher

On Tue, 14 Jul 2020 14:35:16 +0000 Ooi, Joyce wrote:
> > I'm no device tree expert but these look like config options rather than HW
> > description. They also don't appear to be documented in the next patch.  
> 
> The poll_freq are part of the msgdma prefetcher IP, whereby it
> specifies the frequency of descriptor polling operation. I can add
> the poll_freq description in the next patch.

Is the value decided at the time of synthesis or can the driver choose 
the value it wants?