From 58904a8a95f09bf26e7290993e1797207cda1937 Mon Sep 17 00:00:00 2001
From: Brad Griffis <bgriffis@nvidia.com>
Date: Fri, 13 Dec 2024 23:56:02 +0000
Subject: [PATCH] arm64: tegra: Fix Tegra234 PCIe interrupt-map
commit b615fbd70fce8582d92b3bdbbf3c9b80cadcfb55 upstream.
For interrupt-map entries, the DTS specification requires
that #address-cells is defined for both the child node and the
interrupt parent. For the PCIe interrupt-map entries, the parent
node ("gic") has not specified #address-cells. The existing layout
of the PCIe interrupt-map entries indicates that it assumes
that #address-cells is zero for this node.
Explicitly set #address-cells to zero for "gic" so that it complies
with the device tree specification.
NVIDIA EDK2 works around this issue by assuming #address-cells
is zero in this scenario, but that workaround is being removed and so
this update is needed or else NVIDIA EDK2 cannot successfully parse the
device tree and the board cannot boot.
Fixes: ec142c44b026 ("arm64: tegra: Add P2U and PCIe controller nodes to Tegra234 DT")
Signed-off-by: Brad Griffis <bgriffis@nvidia.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20241213235602.452303-1-bgriffis@nvidia.com
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/boot/dts/nvidia/tegra234.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
index 6598e9ac52b81..9429ed118e600 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -1574,6 +1574,8 @@ gic: interrupt-controller@f400000 {
#redistributor-regions = <1>;
#interrupt-cells = <3>;
interrupt-controller;
+
+ #address-cells = <0>;
};
smmu_iso: iommu@10000000{
--
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