From 54f176c2b1146615f20cb43085ab98f7924766e6 Mon Sep 17 00:00:00 2001 From: Erik Bourget Date: Mon, 9 Nov 2026 15:33:18 -0500 Subject: [PATCH] arm64: dts: apple: Restore DCP address cells for J713 IOMMU validation The DART handoff validator checks address and size cell counts for every owner in an iommu-addresses tuple, including the DCP PIODMA child. Without cell counts on its DCP parent, of_n_addr_cells() and of_n_size_cells() warn before falling back to the SoC node. This taints the kernel during boot. Restore the two-cell address and size declarations on the shared J713/J715 DCP node so the inherited IOMMU tuples have explicit parent cell counts. Signed-off-by: Erik Bourget --- arch/arm64/boot/dts/apple/t8132-j713-j715.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/apple/t8132-j713-j715.dtsi b/arch/arm64/boot/dts/apple/t8132-j713-j715.dtsi index 47c224586dffa..e11d0d556d47e 100644 --- a/arch/arm64/boot/dts/apple/t8132-j713-j715.dtsi +++ b/arch/arm64/boot/dts/apple/t8132-j713-j715.dtsi @@ -135,6 +135,8 @@ &dcp { apple,panel-width-mm = <290>; apple,panel-height-mm = <188>; + #address-cells = <2>; + #size-cells = <2>; }; /* External displays: both pipes, routed to either USB-C port. */