Date:   Sun, 7 Apr 2019 16:32:37 +0200
From:   Ondřej Jirman <megous@...ous.com>
To:     Clément Péron <peron.clem@...il.com>
Cc:     linux-sunxi@...glegroups.com,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, 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@...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: [linux-sunxi] [PATCH 00/12] Add support for Orange Pi 3

On Sun, Apr 07, 2019 at 03:36:21PM +0200, Clément Péron wrote:
> Hi,
> 
> On Sat, 6 Apr 2019 at 01:45, megous via linux-sunxi
> <linux-sunxi@...glegroups.com> wrote:
> >
> > From: Ondrej Jirman <megous@...ous.com>
> >
> > This series implements support for Xunlong Orange Pi 3 board.
> 
> OrangePi 3 Lite2 and One Plus boards support has already been merged.
> The support is not complete but you should rebase your patches on top
> of sunxi/for-next

Hi,

OrangePi 3 is somewhat different from these two boards (mostly it has a differnt
power tree). It doesn't use the AXP regulators that are defined in the
sun50i-h6-orangepi.dtsi in the same way.

For example:

- bldo3 (is turned always on in sun50i-h6-orangepi.dtsi but unused for opi3)
- cldo2 and cldo3 are unused on opi3 and have nothing to do with WiFi
- aldo3 is not for dram
- bldo1 on the other hand is for dram on opi3
- some other regulators are used for different/more functions and thus
  named differntly
- USB id-det pin is differnt
- ...

OrangePi 3 is not a superset of what is defined in sun50i-h6-orangepi.dtsi.

So to base Orange Pi 3 dts on top of existing sun50i-h6-orangepi.dtsi I'd have
to first move some things out of the base dtsi to the OrangePi Lite2 and One
Plus board dts files, in order to have sun50i-h6-orangepi.dtsi only describe HW
that is *really* shared by these 2 boards and Orange Pi 3.

If I do that, I'd undefine all the axp805 regulator nodes and move the
configurations to each of the 3 board files. That will probably end up being
the least confusing and most maintainable. See axp81x.dtsi lines 86-144 for
what I mean.

What do you think? Is this acceptable to everyone?

regards,
  o.

> https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git/tree/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi?h=sunxi/for-next
> 
> Regards,
> Clement
> 
> >
> > Unfortunately, this board needs some small driver patches, so I have
> > split the boards DT patch into chunks that require patches for drivers
> > in various subsystems:
> >
> > - Basic DT for the board  (patch 1)
> > - HDMI support            (patches 2, 3, 4)
> > - Ethernet support        (patches 5, 6, 7)
> > - WiFi support            (patches 8, 9, 10, 11, 12)
> >
> > This patch is also needed to not get segfault on boot:
> >   https://lkml.org/lkml/2019/4/5/856
> >
> > Please take a look.
> >
> > regards,
> >   Ondrej Jirman
> >
> > Icenowy Zheng (2):
> >   net: stmmac: sun8i: add support for Allwinner H6 EMAC
> >   net: stmmac: sun8i: force select external PHY when no internal one
> >
> > Ondrej Jirman (10):
> >   arm64: dts: allwinner: h6: Add Orange Pi 3 DTS
> >   drm: sun4i: Add support for enabling DDC I2C bus to dw_hdmi glue
> >   dt-bindings: display: sun4i-drm: Add DDC power supply
> >   arm64: dts: allwinner: orange-pi-3: Enable HDMI output
> >   arm64: dts: allwinner: orange-pi-3: Enable ethernet
> >   arm64: dts: allwinner: h6: Add MMC1 pins
> >   pinctrl: sunxi: Prepare for alternative bias voltage setting methods
> >   pinctrl: sunxi: Support I/O bias voltage setting on H6
> >   brcmfmac: Loading the correct firmware for brcm43456
> >   arm64: dts: allwinner: orange-pi-3: Enable WiFi
> >
> >  .../bindings/display/sunxi/sun4i-drm.txt      |   1 +
> >  arch/arm64/boot/dts/allwinner/Makefile        |   1 +
> >  .../dts/allwinner/sun50i-h6-orangepi-3.dts    | 339 ++++++++++++++++++
> >  arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi  |   9 +
> >  drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c         |  17 +-
> >  drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h         |   1 +
> >  .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c |  22 ++
> >  .../broadcom/brcm80211/brcmfmac/sdio.c        |   4 +-
> >  drivers/pinctrl/sunxi/pinctrl-sun50i-h6.c     |   1 +
> >  drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c     |   2 +-
> >  drivers/pinctrl/sunxi/pinctrl-sunxi.c         |  50 ++-
> >  drivers/pinctrl/sunxi/pinctrl-sunxi.h         |   7 +-
> >  12 files changed, 433 insertions(+), 21 deletions(-)
> >  create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
> >
> > --
> > 2.21.0
> >
> > --
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