From: Nicolai Buchwitz <nb@tipi-net.de>
To: Florian Fainelli <florian.fainelli@broadcom.com>
Cc: "Andrew Lunn" <andrew@lunn.ch>, "James Clark" <jjc@jclark.com>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@kernel.org>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Andrew Lunn" <andrew+netdev@lunn.ch>,
"Heiner Kallweit" <hkallweit1@gmail.com>,
"Richard Cochran" <richardcochran@gmail.com>,
"Doug Berger" <opendmb@gmail.com>,
"Théo Lebrun" <theo.lebrun@bootlin.com>,
"Russell King" <linux@armlinux.org.uk>,
"Conor Dooley" <conor.dooley@microchip.com>,
"Broadcom internal kernel review list"
<bcm-kernel-feedback-list@broadcom.com>,
"Thomas Gleixner" <tglx@kernel.org>,
"Miroslav Lichvar" <mlichvar@redhat.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next 5/5] net: mdio: bcm-unimac: implement timestamped MDIO writes
Date: Tue, 20 Oct 2026 16:51:42 +0200 [thread overview]
Message-ID: <d2bf2454e4c1d815db5a745efc017060@tipi-net.de> (raw)
In-Reply-To: <2279ba71-009f-429b-a27e-dc72ab11cfbc@broadcom.com>
Hi Florian
On 16.10.2026 00:12, Florian Fainelli wrote:
> [...]
>>>> I've put together 3 patches, which do the clock plumbing:
>>>> https://github.com/nbuchwitz/linux/commits/devel/bcm2711-gisb-clk/
>>>
>>> It would be nice to extend this and set the divider based on this to
>>> give 2.5Mhz, as required by 802.3, as the default. Allow boards to
>>> override this using the clock-frequency property.
>
> Regarding the choice of the GISB clock to feed it into the MDIO clock
> input, that's something for Raspberry Pi to comment on because I
> vividly remember we did something different for 7211 and used a 250MHz
> clock in the interest of being identical to the other STB chips. Your
> changes do look correct however.
I received feedback from RPi today regarding the GISB clock, and they
confirmed my theory. I’ll therefore send the clock patches soon.
> [...]
Cheers
Nicolai
next prev parent reply other threads:[~2026-10-20 14:51 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-09 14:35 [PATCH net-next 0/5] net: mdio: add timestamped MDIO writes for PHY gettimex64 James Clark
2026-10-09 14:35 ` [PATCH net-next 1/5] net: mdio: add timestamped write operation James Clark
2026-10-10 15:10 ` netdev-bot+sashiko
2026-10-11 14:03 ` Andrew Lunn
2026-10-11 14:33 ` James Clark
2026-10-09 14:35 ` [PATCH net-next 2/5] net: phy: broadcom: use timestamped MDIO writes in gettimex64 James Clark
2026-10-10 15:10 ` netdev-bot+sashiko
2026-10-09 14:35 ` [PATCH net-next 3/5] ptp: add functions to adjust system timestamps James Clark
2026-10-10 15:10 ` netdev-bot+sashiko
2026-10-09 14:35 ` [PATCH net-next 4/5] net: macb: implement timestamped MDIO writes James Clark
2026-10-10 15:10 ` netdev-bot+sashiko
2026-10-11 9:23 ` Théo Lebrun
2026-10-11 10:02 ` Théo Lebrun
2026-10-11 13:01 ` James Clark
2026-10-15 15:52 ` Théo Lebrun
2026-10-15 16:02 ` Andrew Lunn
2026-10-16 4:36 ` James Clark
2026-10-16 17:51 ` Théo Lebrun
2026-10-11 21:10 ` Andrew Lunn
2026-10-09 14:35 ` [PATCH net-next 5/5] net: mdio: bcm-unimac: " James Clark
2026-10-09 16:04 ` Florian Fainelli
2026-10-10 1:25 ` James Clark
2026-10-10 15:18 ` Nicolai Buchwitz
2026-10-11 7:20 ` James Clark
2026-10-11 13:22 ` Nicolai Buchwitz
2026-10-12 0:54 ` James Clark
2026-10-12 13:18 ` Nicolai Buchwitz
2026-10-12 11:51 ` Andrew Lunn
2026-10-12 13:21 ` Nicolai Buchwitz
2026-10-15 22:12 ` Florian Fainelli
2026-10-20 14:51 ` Nicolai Buchwitz [this message]
2026-10-10 15:11 ` netdev-bot+sashiko
2026-10-12 12:03 ` Andrew Lunn
2026-10-10 4:55 ` [PATCH net-next 0/5] net: mdio: add timestamped MDIO writes for PHY gettimex64 James Clark
2026-10-11 13:50 ` Andrew Lunn
2026-10-11 14:00 ` James Clark
2026-10-11 18:07 ` Nicolai Buchwitz
2026-10-12 13:18 ` Andrew Lunn
2026-10-12 13:20 ` Nicolai Buchwitz
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