linux-kernel - [PATCH v2 09/10] arm64: dts: mediatek: add iommu support for mt8365 SoC

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Date:   Wed, 05 Apr 2023 10:06:51 +0200
From:   Alexandre Mergnat <amergnat@...libre.com>
To:     Yong Wu <yong.wu@...iatek.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Alexandre Mergnat <amergnat@...libre.com>
Subject: [PATCH v2 09/10] arm64: dts: mediatek: add iommu support for
 mt8365 SoC

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

Reviewed-by: Yong Wu <yong.wu@...iatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
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 07a7267f338e..6260744f4be5 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>;

-- 
2.25.1