From: "Markus Stockhausen" <markus.stockhausen@gmx.de>
To: "'Andrew Lunn'" <andrew@lunn.ch>
Cc: <hkallweit1@gmail.com>, <linux@armlinux.org.uk>,
<davem@davemloft.net>, <edumazet@google.com>, <kuba@kernel.org>,
<pabeni@redhat.com>, <netdev@vger.kernel.org>,
<chris.packham@alliedtelesis.co.nz>, <daniel@makrotopia.org>,
<robh@kernel.org>, <krzk+dt@kernel.org>, <conor+dt@kernel.org>,
<devicetree@vger.kernel.org>
Subject: AW: [PATCH net-next v2 2/8] net: mdio: realtek-rtl9300: Add page tracking
Date: Mon, 29 Jun 2026 19:25:52 +0200 [thread overview]
Message-ID: <004201dd07ec$585a6ba0$090f42e0$@gmx.de> (raw)
In-Reply-To: <f3b0ddab-372a-49c5-977e-59c7a104d0a8@lunn.ch>
> Von: Andrew Lunn <andrew@lunn.ch>
> Gesendet: Montag, 29. Juni 2026 18:29
> An: Markus Stockhausen <markus.stockhausen@gmx.de>
> Betreff: Re: [PATCH net-next v2 2/8] net: mdio: realtek-rtl9300: Add page
tracking
> ...
> > Intercept access to register 31 and store the desired value for each
port
> > in the driver. When issuing access to other registers add the saved
page.
> > This given, the hardware will run two consecutive c22 commands that are
> > not interrupted by polling.
> >
> > ... hardware poll ...
> > phy_write(phy, 31, page)
> > phy_write(phy, reg, value)
> > ... hardware poll ...
>
> How do you guarantee the polling will not get between?
The page is part of a single command towards the controller.
If a page is given the hardware will make the above two MDIO
commands out of this without any polling in between.
I will clarify this in the next version.
Markus
next prev parent reply other threads:[~2026-06-29 17:26 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-29 15:23 [PATCH net-next v2 0/8] net: mdio: realtek-rtl9300: Add RTL83xx support Markus Stockhausen
2026-06-29 15:23 ` [PATCH net-next v2 1/8] net: mdio: realtek-rtl9300: Add polling documentation Markus Stockhausen
2026-06-29 16:21 ` Andrew Lunn
2026-06-29 15:23 ` [PATCH net-next v2 2/8] net: mdio: realtek-rtl9300: Add page tracking Markus Stockhausen
2026-06-29 16:28 ` Andrew Lunn
2026-06-29 17:25 ` Markus Stockhausen [this message]
2026-06-29 15:23 ` [PATCH net-next v2 3/8] net: phy: add (*notify_phy_attach/detach)() hooks to struct mii_bus Markus Stockhausen
2026-06-29 15:23 ` [PATCH net-next v2 4/8] net: mdio: realtek-rtl9300: Configure hardware polling during probing Markus Stockhausen
2026-06-29 16:38 ` Andrew Lunn
2026-06-29 15:23 ` [PATCH net-next v2 5/8] net: mdio: realtek-rtl9300: Add c45 over c22 mitigation Markus Stockhausen
2026-06-29 16:40 ` Andrew Lunn
2026-06-29 17:29 ` AW: " Markus Stockhausen
2026-06-29 15:23 ` [PATCH net-next v2 6/8] net: mdio: realtek-rtl9300: Increase MDIO timeout Markus Stockhausen
2026-06-29 15:23 ` [PATCH net-next v2 7/8] net: mdio: realtek-rtl9300: Add support for RTL838x Markus Stockhausen
2026-06-29 15:23 ` [PATCH net-next v2 8/8] net: mdio: realtek-rtl9300: Add support for RTL839x Markus Stockhausen
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