linux-kernel - Re: [PATCH 2/3] ARM: dts: rockchip: add missing @0 to memory nodenames

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Date:   Thu, 05 Mar 2020 22:31:59 +0100
From:   Heiko Stuebner <heiko@...ech.de>
To:     Johan Jonker <jbx6244@...il.com>, robh+dt@...nel.org
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] ARM: dts: rockchip: add missing @0 to memory nodenames

Hi Johan,

Am Mittwoch, 4. März 2020, 08:40:50 CET schrieb Johan Jonker:
> A test with the command below gives for example this error:
> 
> arch/arm/boot/dts/rk3288-tinker.dt.yaml: /: memory:
> False schema does not allow
> {'device_type': ['memory'], 'reg': [[0, 0, 0, 2147483648]]}
> 
> The memory nodes all have a reg property that requires '@' in
> the nodename. Fix this error by adding the missing '@0' to
> the involved memory nodenames.
> 
> make ARCH=arm dtbs_check
> DT_SCHEMA_FILES=~/.local/lib/python3.5/site-packages/dtschema/
> schemas/root-node.yaml

changes to memory nodes you sadly cannot do in such an automated fashion.
If you read the comment in rk3288-veyron.dtsi you'll see that a previous
similar iteration broke all of those machines as their coreboot doesn't
copy with memory@0 and would insert another memory node without @0

In the past iteration the consensus then was that memory without @0
is also ok (as it isn't changeable anyway).

As I don't really want to repeat that, I'd like actual hardware tests
before touching memory nodes.

Heiko