linux-kernel - Re: [PATCH] ARM: dts: Add devicetree for the Raspberry Pi 3, for arm32 (v4)

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Message-ID: <87d1c1mv6y.fsf@eliezer.anholt.net>
Date:   Mon, 24 Apr 2017 13:01:25 -0700
From:   Eric Anholt <eric@...olt.net>
To:     Olof Johansson <olof@...om.net>
Cc:     "linux-arm-kernel\@lists.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>, Lee Jones <lee@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "devicetree\@vger.kernel.org" <devicetree@...r.kernel.org>,
        linux-rpi-kernel@...ts.infradead.org,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
        Stephen Warren <swarren@...dotorg.org>,
        Stefan Wahren <stefan.wahren@...e.com>,
        Broadcom Kernel Feedback List 
        <bcm-kernel-feedback-list@...adcom.com>,
        Gerd Hoffmann <kraxel@...hat.com>
Subject: Re: [PATCH] ARM: dts: Add devicetree for the Raspberry Pi 3, for arm32 (v4)

Olof Johansson <olof@...om.net> writes:

> Hi,
>
> On Wed, Mar 29, 2017 at 5:26 PM, Eric Anholt <eric@...olt.net> wrote:
>> Raspbian and Fedora have decided to support the Pi3 in 32-bit mode for
>> now, so it's useful to be able to test that mode on an upstream
>> kernel.  It's also been useful for me to use the same board for 32-bit
>> and 64-bit development.
>>
>> Signed-off-by: Eric Anholt <eric@...olt.net>
>> ---
>>
>> v1: Gerd's patch that put the ../../../arm64/... link in the Makefile
>> v2: Michael's patch that #included from ../../../arm64/... in a new
>>     bcm2837-rpi-3-b.dts.
>> v3: Mine, using symlinks to make sure that we don't break the split DT
>>     tree.
>> v4: Rely on the new include/arm64 symlink.
>>
>> Assuming positive review feedback, I assume it would be acceptable to
>> merge the shared/dt-symlinks branch in a PR of my own for the 32-bit
>> DT branch?
>>
>>  arch/arm/boot/dts/Makefile | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index 011808490fed..27d258cb50f2 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -72,6 +72,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
>>         bcm2835-rpi-b-plus.dtb \
>>         bcm2835-rpi-a-plus.dtb \
>>         bcm2836-rpi-2-b.dtb \
>> +       include/arm64/broadcom/bcm2837-rpi-3-b.dtb \
>
> Building straight out of (and into) the include dir is a little odd here.
>
> A tiny wrapper *.dtb in this dir, that just includes a shared dts/dtsi
> would be a lot nicer.

OK, just sent a version with a #include.

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