linux-kernel - [PATCH 6/6] arm64: dts: mediatek: add iommu support for mt8365 SoC

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Message-Id: <20230207-iommu-support-v1-6-4f0c81fd52c1@baylibre.com>
Date:   Tue, 07 Mar 2023 14:46:31 +0100
From:   Alexandre Mergnat <amergnat@...libre.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Yong Wu <yong.wu@...iatek.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        Alexandre Mergnat <amergnat@...libre.com>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org
Subject: [PATCH 6/6] arm64: dts: mediatek: add iommu support for mt8365 SoC

Add iommu support in the SoC DTS using the 4 local arbiters (LARBs)

Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
index db0b897f58bb..c713471c59dc 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
@@ -456,6 +456,14 @@ sysirq: interrupt-controller@...00a80 {
 			reg = <0 0x10200a80 0 0x20>;
 		};
 
+		iommu: iommu@...05000 {
+			compatible = "mediatek,mt8365-m4u";
+			reg = <0 0x10205000 0 0x1000>;
+			interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_LOW>;
+			mediatek,larbs = <&larb0>, <&larb1>, <&larb2>, <&larb3>;
+			#iommu-cells = <1>;
+		};
+
 		infracfg_nao: infracfg@...0e000 {
 			compatible = "mediatek,mt8365-infracfg", "syscon";
 			reg = <0 0x1020e000 0 0x1000>;

-- 
b4 0.10.1