Hi Allen, actually there's one other thing, please see below. On Fri, Feb 18, 2022 at 05:16:25PM +0800, Allen-KH Cheng wrote: > + iommu0: m4u@1401d000 { > + compatible = "mediatek,mt8192-m4u"; > + reg = <0 0x1401d000 0 0x1000>; > + mediatek,larbs = <&larb0 &larb1 &larb2 > + &larb4 &larb5 &larb7 > + &larb9 &larb11 &larb13 > + &larb14 &larb16 &larb17 > + &larb18 &larb19 &larb20>; I just sent a patch [1] fixing the formatting of the mediatek,larbs properties on other Mediatek Devicetrees. So please do the same here so we can avoid introducing a new warning in dtbs_check. Thanks, Nícolas [1] https://lore.kernel.org/all/20220225225315.80220-1-nfraprado@xxxxxxxxxxxxx/