netdev - Re: [PATCH v12 4/4] net: phy: bcm-phy-lib: Implement BroadR-Reach link modes

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Message-ID: <6dc73033-77fd-4218-b144-2086357f96ff@broadcom.com>
Date: Sun, 14 Jul 2024 13:13:14 -0700
From: Florian Fainelli <florian.fainelli@...adcom.com>
To: Kamil Horák (2N) <kamilh@...s.com>,
 bcm-kernel-feedback-list@...adcom.com, andrew@...n.ch, hkallweit1@...il.com,
 linux@...linux.org.uk, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, f.fainelli@...il.com, kory.maincent@...tlin.com
Cc: netdev@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v12 4/4] net: phy: bcm-phy-lib: Implement BroadR-Reach
 link modes



On 7/12/2024 8:07 AM, Kamil Horák (2N) wrote:
> Implement single-pair BroadR-Reach modes on bcm5481x PHY by Broadcom.
> Create set of functions alternative to IEEE 802.3 to handle
> configuration of these modes on compatible Broadcom PHYs.
> There is only subset of capabilities supported because of limited
> collection of hardware available for the development.
> For BroadR-Reach capable PHYs, the LRE (Long Reach Ethernet)
> alternative register set is handled. Only bcm54811 PHY is verified,
> for bcm54810, there is some support possible but untested. There
> is no auto-negotiation of the link parameters (called LDS in the
> Broadcom terminology, Long-Distance Signaling) for bcm54811.
> It should be possible to enable LDS for bcm54810.
> 
> Signed-off-by: Kamil Horák (2N) <kamilh@...s.com>

Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>
-- 
Florian

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