linux-kernel - Re: [PATCH 07/12] arm64: dts: allwinner: orange-pi-3: Enable ethernet

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Date:   Tue, 9 Apr 2019 00:26:02 +0200
From:   Ondřej Jirman <megous@...ous.com>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Arend van Spriel <arend.vanspriel@...adcom.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-Hsien Lin <chi-hsien.lin@...ress.com>,
        Wright Feng <wright.feng@...ress.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Naveen Gupta <naveen.gupta@...ress.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        brcm80211-dev-list@...ress.com, linux-gpio@...r.kernel.org
Subject: Re: [PATCH 07/12] arm64: dts: allwinner: orange-pi-3: Enable ethernet

On Mon, Apr 08, 2019 at 11:41:38AM +0530, Jagan Teki wrote:
> On Sat, Apr 6, 2019 at 5:15 AM <megous@...ous.com> wrote:
> >
> > From: Ondrej Jirman <megous@...ous.com>
> >
> > Orange Pi 3 has two regulators that power the Realtek RTL8211E.
> > According to the phy datasheet, both regulators need to be enabled
> > at the same time, but we can only specify a single phy-supply in
> > the DT.
> >
> > This can be achieved by making one regulator depedning on the
> > other via vin-supply. While it's not a technically correct
> > description of the hardware, it achieves the purpose.
> >
> > All values of RX/TX delay were tested exhaustively and a middle
> > one of the working values was chosen.
> >
> > Signed-off-by: Ondrej Jirman <megous@...ous.com>
> > ---
> >  .../dts/allwinner/sun50i-h6-orangepi-3.dts    | 44 +++++++++++++++++++
> >  1 file changed, 44 insertions(+)
> 
> This was in ML[1], I thought this change would already merged. I
> remember Chen-Yu applied and revert due to emac node not mainlined at
> that time.
> 
> [1] https://patchwork.kernel.org/patch/10558281/

The patch was not merged at the time, and bitrotted a bit. Armbian folks
were applying the bitortted patch out-of-the mainline and were experiencing
NPEs. I fixed the patch, and it is also part of this series. It's patch 5.

	o.