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Message-ID: <20240924-haiku-drudge-79e5824d4b6f@spud>
Date: Tue, 24 Sep 2024 17:02:53 +0100
From: Conor Dooley <conor@...nel.org>
To: Macpaul Lin <macpaul.lin@...iatek.com>
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Yong Wu <yong.wu@...iatek.com>,
	Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	Alexandre Mergnat <amergnat@...libre.com>,
	Bear Wang <bear.wang@...iatek.com>,
	Pablo Sun <pablo.sun@...iatek.com>, Macpaul Lin <macpaul@...il.com>,
	Sen Chu <sen.chu@...iatek.com>,
	Chris-qj chen <chris-qj.chen@...iatek.com>,
	MediaTek Chromebook Upstream <Project_Global_Chrome_Upstream_Group@...iatek.com>,
	Chen-Yu Tsai <wenst@...omium.org>
Subject: Re: [PATCH 2/6] dt-bindings: iommu: mediatek: Fix interrupt count
 constraint for new SoCs

On Tue, Sep 24, 2024 at 06:31:52PM +0800, Macpaul Lin wrote:
> The infra-iommu node in mt8195.dtsi was triggering a CHECK_DTBS error due
> to an excessively long 'interrupts' property. The error message was:
> 
>   infra-iommu@...15000: interrupts: [[0, 795, 4, 0], [0, 796, 4, 0],
>                      [0, 797, 4, 0], [0, 798, 4, 0], [0, 799, 4, 0]]
>                      is too long
> 
> To address this issue, add "minItems: 1" and "maxItems: 5" constraints to
> the 'interrupts' property in the DT binding schema. This change allows for
> flexibility in the number of interrupts for new SoCs
> 
> Fixes: bca28426805d ("dt-bindings: iommu: mediatek: Convert IOMMU to DT schema")
> 

This space should be removed.

> Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
> ---
>  Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> index ea6b0f5f24de..a00f1f0045b1 100644
> --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> @@ -96,7 +96,8 @@ properties:
>      maxItems: 1
>  
>    interrupts:
> -    maxItems: 1
> +    minItems: 1
> +    maxItems: 5

You need to add an items list here, and probably some per compatible
constraints. What are each of the itnerrupts for?

>  
>    clocks:
>      items:
> -- 
> 2.45.2
> 

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