From: Vladimir Oltean <olteanv@gmail.com>
To: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: "David S. Miller" <davem@davemloft.net>,
Andrew Lunn <andrew@lunn.ch>, Eric Dumazet <edumazet@google.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Woojung Huh <woojung.huh@microchip.com>,
Arun Ramadoss <arun.ramadoss@microchip.com>,
Lucas Stach <l.stach@pengutronix.de>,
kernel@pengutronix.de, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, UNGLinuxDriver@microchip.com
Subject: Re: [PATCH net-next v1 2/3] net: dsa: microchip: lan937x: force RGMII interface into PHY mode
Date: Fri, 28 Jun 2024 01:25:43 +0300 [thread overview]
Message-ID: <20240627222543.rcx3i5o43toopwcm@skbuf> (raw)
In-Reply-To: <20240627123911.227480-3-o.rempel@pengutronix.de>
On Thu, Jun 27, 2024 at 02:39:10PM +0200, Oleksij Rempel wrote:
> From: Lucas Stach <l.stach@pengutronix.de>
>
> The register manual and datasheet documentation for the LAN937x series
> disagree about the polarity of the MII mode strap. As a consequence
> there are hardware designs that have the RGMII interface strapped into
> MAC mode, which is a invalid configuration and will prevent the internal
> clock from being fed into the port TX interface.
>
> Force the MII mode to PHY for RGMII interfaces where this is the only
> valid mode, to override the inproper strapping.
>
> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> ---
What's the difference between MAC mode and PHY mode with RGMII for this switch?
next prev parent reply other threads:[~2024-06-27 22:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-27 12:39 [PATCH net-next v1 1/1] net: dsa: microchip: add regmap_range for KSZ9563 chip Oleksij Rempel
2024-06-27 12:39 ` [PATCH net-next v1 1/3] net: dsa: microchip: lan9372: add 100BaseTX PHY support Oleksij Rempel
2024-06-28 2:31 ` Arun.Ramadoss
2024-06-27 12:39 ` [PATCH net-next v1 2/3] net: dsa: microchip: lan937x: force RGMII interface into PHY mode Oleksij Rempel
2024-06-27 15:15 ` Andrew Lunn
2024-06-27 22:25 ` Vladimir Oltean [this message]
2024-06-28 7:10 ` Oleksij Rempel
2024-06-28 14:02 ` Andrew Lunn
2024-06-27 12:39 ` [PATCH net-next v1 3/3] net: dsa: microchip: lan937x: disable VPHY output Oleksij Rempel
2024-06-27 22:38 ` Vladimir Oltean
2024-06-28 5:27 ` Oleksij Rempel
2024-06-28 8:45 ` Lucas Stach
2024-06-27 12:43 ` [PATCH net-next v1 1/1] net: dsa: microchip: add regmap_range for KSZ9563 chip Oleksij Rempel
2024-06-27 22:00 ` Jakub Kicinski
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