linux-kernel - Re: [RFC-PATCH] net: stmmac: Add KR port support.

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Message-ID: <20210730151124.GH22278@shell.armlinux.org.uk>
Date:   Fri, 30 Jul 2021 16:11:25 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Daniel Walker <danielwa@...co.com>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Balamurugan Selvarajan <balamsel@...co.com>,
        xe-linux-external@...co.com,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC-PATCH] net: stmmac: Add KR port support.

On Thu, Jul 29, 2021 at 04:44:42PM -0700, Daniel Walker wrote:
> From: Balamurugan Selvarajan <balamsel@...co.com>
> 
> For KR port the mii interface is a chip-to-chip
> interface without a mechanical connector. So PHY
> inits are not applicable. In this case MAC is
> configured to operate at forced speed(1000Mbps)
> and full duplex. Modified driver to accommodate
> PHY and NON-PHY mode.

Can we clarify exactly what you are talking about here. What does
"KR port" refer to? What protocol is spoken by this port? Is it
1000BASE-KX (1000BASE-X over backplane)? Does it include 10GBASE-KR?

Thanks.

-- 
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