netdev - Re: [PATCH v4] net: macb: Fix several edge cases in validate

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Message-ID: <YXg/DP2d1UM831+c@shell.armlinux.org.uk>
Date:   Tue, 26 Oct 2021 18:46:52 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Sean Anderson <sean.anderson@...o.com>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        netdev@...r.kernel.org, "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Antoine Tenart <atenart@...nel.org>
Subject: Re: [PATCH v4] net: macb: Fix several edge cases in validate

On Tue, Oct 26, 2021 at 01:28:15PM -0400, Sean Anderson wrote:
> Actually, according to the Zynq UltraScale+ Devices Register Reference
> [1], the PCS does not support 10/100. So should SGMII even fall through
> here?
> 
> [1] https://www.xilinx.com/html_docs/registers/ug1087/gem___pcs_control.html

Hmm. That brings with it fundamental question: if the PCS supports 1G
only, does it _actually_ support Cisco SGMII, or does it only support
1000base-X?

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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