linux-kernel - Re: [PATCH 0/9] ARM: sun9i: a80: Enable GMAC

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Date:   Wed, 6 Feb 2019 13:16:54 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [PATCH 0/9] ARM: sun9i: a80: Enable GMAC

On Wed, Feb 06, 2019 at 11:32:30AM +0800, Chen-Yu Tsai wrote:
> Hi everyone,
> 
> On the Allwinner A80, the PIO pin controller includes configuration
> registers to set the I/O voltage. These must match the actual voltage
> provided externally. A mismatch results in signals not being passed
> through.
> 
> With the new PIO pin-bank regulator supply support in place, we can
> tack on support for setting up these registers.
> 
> This in turn allows us to enable the GMAC, which runs at a reduced
> 2.5V for RGMII, instead of the standard 3.0V or 3.3V.
> 
> Please have a look.

Applied the patches 2-9, thanks!
Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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