linux-kernel - [PATCH 5/7] arm64: dts: rockchip: Add ITS GIC600 configuration for rk3588s

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Date:   Fri, 10 Mar 2023 08:05:16 +0000
From:   Lucas Tanure <lucas.tanure@...labora.com>
To:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczynski <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Qu Wenruo <wqu@...e.com>,
        Piotr Oniszczuk <piotr.oniszczuk@...il.com>,
        Peter Geis <pgwipeout@...il.com>,
        Kever Yang <kever.yang@...k-chips.com>,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org,
        Lucas Tanure <lucas.tanure@...labora.com>, kernel@...labora.com
Subject: [PATCH 5/7] arm64: dts: rockchip: Add ITS GIC600 configuration for rk3588s

Add support for Interrupts to be translated by the GIC-600
Interrupt Translation Service (ITS).
ITS provides a software mechanism for translating message-based
interrupts into Locality-specific Peripheral Interrupts (LPIs).

This is based on prior work from XiaoDong Huang and
Peter Geis fixing this issue specifically for Rockchip 356x.
Plus comments of Robin Murphy about Non-Coherent properties.

Signed-off-by: Lucas Tanure <lucas.tanure@...labora.com>
---
 arch/arm64/boot/dts/rockchip/rk3588s.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
index 24919cb5c153..695aed05eba2 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
@@ -1594,6 +1594,25 @@ gic: interrupt-controller@...00000 {
 		mbi-ranges = <424 56>;
 		msi-controller;
 		#interrupt-cells = <4>;
+		ranges;
+
+		its0: msi-controller@...40000 {
+			compatible = "arm,gic-v3-its";
+			msi-controller;
+			dma-noncoherent;
+			#msi-cells = <1>;
+			reg = <0x0 0xfe640000 0x0 0x20000>;
+			power-domains = <&power RK3588_PD_PCIE>;
+		};
+
+		its1: msi-controller@...60000 {
+			compatible = "arm,gic-v3-its";
+			msi-controller;
+			dma-noncoherent;
+			#msi-cells = <1>;
+			reg = <0x0 0xfe660000 0x0 0x20000>;
+			power-domains = <&power RK3588_PD_PCIE>;
+		};
 
 		ppi-partitions {
 			ppi_partition0: interrupt-partition-0 {
-- 
2.39.2