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Message-ID: <a7c43359-5d5a-47a9-a9b5-819e164457d4@lunn.ch>
Date: Tue, 30 Apr 2024 16:14:03 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Parthiban.Veerasooran@...rochip.com
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
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Subject: Re: [PATCH net-next v4 13/12] net: lan865x: optional hardware reset
> In the spec, external RESET pin is mentioned as "if implemented", in my
> understanding it is MAC-PHY vendors choice of implementing it where
> Microchip is implemented it. Using this reset, can be a application
> requirement/decision. It can be controlled from an external application
> where it is not needed SPI to operate.
Since it is optional, controlling the reset pin is clearly not
something for the TC6 core.
However, i doubt having an external application controlling the reset
is a good idea. You don't want to reset during operation. So to me,
this reset should be controlled by the driver. I tend to agree, that
actually performing a reset is optional, but i would expect the driver
to ensure the device is taken out of reset during probe, if the power
on default of the board is to hold it in reset.
Andrew
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