netdev - Re: [PATCH net-next] net: stmmac: dwc-qos: calibrate tegra with mdio bus idle

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Message-ID: <ohg5yigr3ubfzpa7aoyx2leburdkspjqft5zg5dwbmqoxmy7t4@r6lw5m6bk2bw>
Date: Wed, 23 Apr 2025 11:14:03 +0200
From: Thierry Reding <treding@...dia.com>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>, 
	Alexandre Torgue <alexandre.torgue@...s.st.com>, Andrew Lunn <andrew+netdev@...n.ch>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Jon Hunter <jonathanh@...dia.com>, 
	linux-arm-kernel@...ts.infradead.org, linux-stm32@...md-mailman.stormreply.com, 
	Maxime Coquelin <mcoquelin.stm32@...il.com>, netdev@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH net-next] net: stmmac: dwc-qos: calibrate tegra with mdio
 bus idle

On Tue, Apr 22, 2025 at 03:24:55PM +0100, Russell King (Oracle) wrote:
> Thierry states that there are prerequists for Tegra's calibration
> that should be met before starting calibration - both the RGMII and
> MDIO interfaces should be idle.
> 
> This commit adds the necessary MII bus locking to ensure that the MDIO
> interface is idle during calibration.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> ---
>  .../net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c  | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)

Acked-by: Thierry Reding <treding@...dia.com>

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