linux-kernel - Re: [PATCH v2 0/4] Fix dt-validate issues on qemu dtbdumps due to dt-bindings

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Date:   Wed, 17 Aug 2022 21:07:03 +0100
From:   Conor Dooley <mail@...chuod.ie>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Anup Patel <anup@...infault.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Guo Ren <guoren@...nel.org>,
        Sagar Kadam <sagar.kadam@...ive.com>,
        Jessica Clarke <jrtc27@...c27.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org, qemu-riscv@...gnu.org
Subject: Re: [PATCH v2 0/4] Fix dt-validate issues on qemu dtbdumps due to
 dt-bindings

Please also ignore this series, I accidentally had too much in the folder.

On 17/08/2022 21:05, Conor Dooley wrote:
> From: Conor Dooley <conor.dooley@...rochip.com>
> 
> The device trees produced automatically for the virt and spike machines
> fail dt-validate on several grounds. Some of these need to be fixed in
> the linux kernel's dt-bindings, but others are caused by bugs in QEMU.
> 
> Patches been sent that fix the QEMU issues [0], but a couple of them
> need to be fixed in the kernel's dt-bindings. The first patches add
> compatibles for "riscv,{clint,plic}0" which are present in drivers and
> the auto generated QEMU dtbs. The final patch should be ignored for all
> serious purposes unless you want to wash your eyes out afterwards, but
> JIC the versioned extensions ever come up, it's there.
> 
> Thanks to Rob Herring for reporting these issues [1],
> Conor.
> 
> To reproduce the errors:
> ./build/qemu-system-riscv64 -nographic -machine virt,dumpdtb=qemu.dtb
> dt-validate -p /path/to/linux/kernel/Documentation/devicetree/bindings/processed-schema.json qemu.dtb
> (The processed schema needs to be generated first)
> 
> 0 - https://lore.kernel.org/linux-riscv/20220810184612.157317-1-mail@conchuod.ie/
> 1 - https://lore.kernel.org/linux-riscv/20220803170552.GA2250266-robh@kernel.org/
> 
> Changes since v1:
> - drop the "legacy systems" bit from the binding descriptions
> - convert to a regex for the isa string
> 
> Conor Dooley (4):
>   dt-bindings: timer: sifive,clint: add legacy riscv compatible
>   dt-bindings: interrupt-controller: sifive,plic: add legacy riscv
>     compatible
>   dt-bindings: riscv: add new riscv,isa strings for emulators
>   dt-bindings: riscv: isa string bonus content
> 
>  .../sifive,plic-1.0.0.yaml                     |  5 +++++
>  .../devicetree/bindings/riscv/cpus.yaml        |  9 ++++++---
>  .../bindings/timer/sifive,clint.yaml           | 18 ++++++++++++------
>  3 files changed, 23 insertions(+), 9 deletions(-)
> 
> 
> base-commit: 568035b01cfb107af8d2e4bd2fb9aea22cf5b868