linux-kernel - Re: [PATCH 2/2] arm64: allwinner: a64: Add Oceanic A64-5inMFD initial support

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Date:   Fri, 1 Mar 2019 15:57:24 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ryan Pannell <ryan@...kl.com>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-amarula@...rulasolutions.com
Subject: Re: [PATCH 2/2] arm64: allwinner: a64: Add Oceanic A64-5inMFD
 initial support

On Wed, Feb 27, 2019 at 09:49:23PM +0530, Jagan Teki wrote:
> On Wed, Feb 27, 2019 at 9:03 PM Maxime Ripard <maxime.ripard@...tlin.com> wrote:
> >
> > Hi,
> >
> > On Tue, Feb 26, 2019 at 11:32:40AM +0530, Jagan Teki wrote:
> > > Oceanic A64-5inMFD is a 5 inch Multi function display baseboard
> > > designed to mount SoPine SOM.
> > >
> > > Key features:
> > > - Allwinner A64 Cortex-A53
> > > - Mali-400MP2 GPU
> > > - AXP803 PMIC
> > > - 2GB DDR3 RAM
> > > - SD Slot
> > > - SPI-NOR flash
> > > - EMAC, RTL8211E
> > > - MCP2515 CAN
> > > - MIPI-DSI
> > > - Goodix 911 CTP
> > > - USB Host
> > > - 12V DC power supply
> > >
> > > Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> > > ---
> > >  arch/arm64/boot/dts/allwinner/Makefile        |  1 +
> > >  .../allwinner/sun50i-a64-oceanic-5inmfd.dts   | 46 +++++++++++++++++++
> > >  2 files changed, 47 insertions(+)
> > >  create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5inmfd.dts
> > >
> > > diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
> > > index a5fb1eaa8acf..ec39fe856117 100644
> > > --- a/arch/arm64/boot/dts/allwinner/Makefile
> > > +++ b/arch/arm64/boot/dts/allwinner/Makefile
> > > @@ -2,6 +2,7 @@
> > >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-amarula-relic.dtb
> > >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-bananapi-m64.dtb sun50i-a64-bananapi-m64-icn6211.dtb
> > >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-nanopi-a64.dtb
> > > +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-oceanic-5inmfd.dtb
> > >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-olinuxino.dtb
> > >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-orangepi-win.dtb
> > >  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pine64-lts.dtb
> > > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5inmfd.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5inmfd.dts
> > > new file mode 100644
> > > index 000000000000..d73d1f55acb9
> > > --- /dev/null
> > > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5inmfd.dts
> > > @@ -0,0 +1,46 @@
> > > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> > > +/*
> > > + * Copyright (C) 2019 Oceanic Systems (UK) Ltd.
> > > + * Copyright (C) 2019 Amarula Solutions B.V.
> > > + * Author: Jagan Teki <jagan@...rulasolutions.com>
> > > + */
> > > +
> > > +/dts-v1/;
> > > +
> > > +#include "sun50i-a64-sopine.dtsi"
> > > +
> > > +/ {
> > > +     model = "Oceanic A64-5inMFD";
> > > +     compatible = "oceanic,a64-5inmfd", "allwinner,sun50i-a64";
> >
> > The name of the DT is Oceanic 5inMFD, while you call the board
> > A64-5inMFD here, which name is the actual name?
> 
> Yes, this is something that we discussed during "Amarula A64-Relic"
> naming convention.
> 
> Since these boards are not famous like teres-i we agreed to add vendor
> name after sun50i-a64- followed by real board name.
> 
> Here A64 already covered during sun50i-a64- so the dts name simply the
> <vendor_name>-<real_board_name>

For the DT name, yeah, we want that pattern.

For the compatible and model, we want to use the model name.

> >
> > > +
> > > +     aliases {
> > > +             serial0 = &uart0;
> > > +     };
> > > +
> > > +     chosen {
> > > +             stdout-path = "serial0:115200n8";
> > > +     };
> > > +};
> > > +
> > > +&ehci0 {
> > > +     status = "okay";
> > > +};
> > > +
> > > +&ohci0 {
> > > +     status = "okay";
> > > +};
> > > +
> > > +&uart0 {
> > > +     pinctrl-names = "default";
> > > +     pinctrl-0 = <&uart0_pb_pins>;
> > > +     status = "okay";
> > > +};
> > > +
> > > +&usb_otg {
> > > +     dr_mode = "host";
> > > +     status = "okay";
> > > +};
> > > +
> > > +&usbphy {
> > > +     status = "okay";
> > > +};
> >
> > Is the OTG controller really is only capable of running in host mode?
> 
> Yes, USB on baseboard is similar like sopine-baseboard

Ok

Maxime

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

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