linux-kernel - Re: [PATCH 0/7] ARM: dts: Broadcom: Fix W=1 DTC warnings

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Message-ID: <070047b5-a101-e7b3-9ef3-7afc765921d9@gmx.net>
Date:   Thu, 30 May 2019 12:12:42 +0200
From:   Stefan Wahren <wahrenst@....net>
To:     Florian Fainelli <f.fainelli@...il.com>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Mark Rutland <mark.rutland@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Scott Branden <sbranden@...adcom.com>,
        Ray Jui <rjui@...adcom.com>,
        Rafał Miłecki <zajec5@...il.com>,
        open list <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        "maintainer:BROADCOM IPROC ARM ARCHITECTURE" 
        <bcm-kernel-feedback-list@...adcom.com>,
        Gregory Fong <gregory.0xf0@...il.com>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Brian Norris <computersforpeace@...il.com>
Subject: Re: [PATCH 0/7] ARM: dts: Broadcom: Fix W=1 DTC warnings

Hi Florian,

Am 29.05.19 um 01:01 schrieb Florian Fainelli:
> Hi all,
>
> This patch series attempts to fix the most obvious W=1 DTC warnings for
> Broadcom SoCs DTS files. Stefan, if you could do the same for all
> bcm283* that would be fantastic.

we tried to fix as much as possible in the past. So there are only those
left, which i don't know how to fix it properly (and without breaking
things):

arch/arm/boot/dts/bcm283x.dtsi:54.6-651.4: Warning
(unit_address_vs_reg): /soc: node has a reg or ranges property, but no
unit name

This from the SoC specific dtsi files which add values for the ranges /
dma-ranges.

soc {
        ranges = <0x7e000000 0x20000000 0x02000000>;
        dma-ranges = <0x40000000 0x00000000 0x20000000>;
};

arch/arm/boot/dts/bcm283x.dtsi:648.12-650.5: Warning (simple_bus_reg):
/soc/gpu: missing or empty reg/ranges property

This comes from the following simple bus child node:

vc4: gpu {
            compatible = "brcm,bcm2835-vc4";
};

This issue should also exists in bcm-cygnus.dtsi. From the hardware side
the GPU is part of the SoC, but maybe we should move this node out of
the SoC simple bus?

Stefan