linux-kernel - Re: [PATCH] ARM64: dts: allwinner: Add devicetree for pine H64 modelA evaluation board

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Message-ID: <20190814131741.GB24324@Red>
Date:   Wed, 14 Aug 2019 15:17:41 +0200
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     Maxime Ripard <mripard@...nel.org>
Cc:     mark.rutland@....com, robh+dt@...nel.org, wens@...e.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH] ARM64: dts: allwinner: Add devicetree for pine H64
 modelA evaluation board

On Mon, Aug 12, 2019 at 11:40:00AM +0200, Maxime Ripard wrote:
> On Thu, Aug 08, 2019 at 10:42:53AM +0200, Corentin Labbe wrote:
> > This patch adds the evaluation variant of the model A of the PineH64.
> > The model A has the same size of the pine64 and has a PCIE slot.
> >
> > The only devicetree difference with current pineH64, is the PHY
> > regulator.
> >
> > Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
> > ---
> >  arch/arm64/boot/dts/allwinner/Makefile        |  1 +
> >  .../sun50i-h6-pine-h64-modelA-eval.dts        | 26 +++++++++++++++++++
> >  2 files changed, 27 insertions(+)
> >  create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64-modelA-eval.dts
> >
> > diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
> > index f6db0611cb85..9a02166cbf72 100644
> > --- a/arch/arm64/boot/dts/allwinner/Makefile
> > +++ b/arch/arm64/boot/dts/allwinner/Makefile
> > @@ -25,3 +25,4 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-orangepi-3.dtb
> >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-orangepi-lite2.dtb
> >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-orangepi-one-plus.dtb
> >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-pine-h64.dtb
> > +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-pine-h64-modelA-eval.dtb
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64-modelA-eval.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64-modelA-eval.dts
> > new file mode 100644
> > index 000000000000..d8ff02747efe
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64-modelA-eval.dts
> > @@ -0,0 +1,26 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> > +/*
> > + * Copyright (C) 2019 Corentin Labbe <clabbe.montjoie@...il.com>
> > + */
> > +
> > +#include "sun50i-h6-pine-h64.dts"
> > +
> > +/ {
> > +	model = "Pine H64 model A evaluation board";
> > +	compatible = "pine64,pine-h64-modelA-eval", "allwinner,sun50i-h6";
> > +
> > +	reg_gmac_3v3: gmac-3v3 {
> > +		compatible = "regulator-fixed";
> > +		regulator-name = "vcc-gmac-3v3";
> > +		regulator-min-microvolt = <3300000>;
> > +		regulator-max-microvolt = <3300000>;
> > +		startup-delay-us = <100000>;
> > +		gpio = <&pio 2 16 GPIO_ACTIVE_HIGH>;
> > +		enable-active-high;
> > +	};
> > +
> > +};
> > +
> > +&emac {
> > +	phy-supply = <&reg_gmac_3v3>;
> > +};
> 
> I might be missing some context here, but I'm pretty sure that the
> initial intent of the pine h64 DTS was to support the model A all
> along.
> 

The regulator changed between modelA and B.
See this old patchset (supporting modelA) https://patchwork.kernel.org/patch/10539149/ for example.