Re: [PATCH 0/6] arm64: add ethernet to orange pi 3

Mark Brown
2022-05-09T15:56:25Z

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On Mon, May 09, 2022 at 05:24:26PM +0200, LABBE Corentin wrote:
> Le Mon, May 09, 2022 at 05:19:16PM +0200, Andrew Lunn a écrit :

> > I'm trying to understand the differences between the two different
> > regulators. If you tell me what the PHY is, i might be able to find
> > the data sheet, and then understand why two regulators are needed and
> > if one needs to be controlled by the PHY driver, not the MDIO bus
> > driver.

> The schematic for the board is https://linux-sunxi.org/images/5/50/OrangePi_3_Schematics_v1.5.pdf
> Which show a RTL8211E.

Most hardware will want all the regulators for the device turned on or
off en masse (possibly in a specific sequence) - it's rare for devices
to support only having some of their supplies enabled for extended
periods, I'd be surprised if something like a PHY did that.

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