linux-kernel - [PATCH v3 4/5] arm64: dts: rockchip: Add verisilicon IOMMU node on RK3588

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Message-ID: <20250619131232.69208-5-benjamin.gaignard@collabora.com>
Date: Thu, 19 Jun 2025 15:12:25 +0200
From: Benjamin Gaignard <benjamin.gaignard@...labora.com>
To: joro@...tes.org,
	will@...nel.org,
	robin.murphy@....com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	heiko@...ech.de,
	nicolas.dufresne@...labora.com,
	jgg@...pe.ca
Cc: iommu@...ts.linux.dev,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	kernel@...labora.com,
	Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v3 4/5] arm64: dts: rockchip: Add verisilicon IOMMU node on RK3588

Add the device tree node for the Verisilicon IOMMU present
in the RK3588 SoC.
This IOMMU handles address translation for the VPU hardware blocks.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
---
changes in version 3:
- Update DT to use "rockchip,rk3588-iommu-1.2" compatible

 arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
index 70f03e68ba55..ab97f06eea74 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
@@ -1263,6 +1263,17 @@ av1d: video-codec@...70000 {
 		clock-names = "aclk", "hclk";
 		power-domains = <&power RK3588_PD_AV1>;
 		resets = <&cru SRST_A_AV1>, <&cru SRST_P_AV1>, <&cru SRST_A_AV1_BIU>, <&cru SRST_P_AV1_BIU>;
+		iommus = <&av1d_mmu>;
+	};
+
+	av1d_mmu: iommu@...a0000 {
+		compatible = "verisilicon,iommu","rockchip,rk3588-iommu-1.2";
+		reg = <0x0 0xfdca0000 0x0 0x600>;
+		interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH 0>;
+		clocks = <&cru ACLK_AV1>, <&cru PCLK_AV1>;
+		clock-names = "core", "iface";
+		#iommu-cells = <0>;
+		power-domains = <&power RK3588_PD_AV1>;
 	};
 
 	vop: vop@...90000 {
-- 
2.43.0