linux-kernel - [PATCH] arm64: tegra186: Add missing CPU PMUs

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Message-Id: <20201013095851.311478-1-maz@kernel.org>
Date:   Tue, 13 Oct 2020 10:58:51 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Nagarjuna Kristam <nkristam@...dia.com>,
        Sowjanya Komatineni <skomatineni@...dia.com>,
        devicetree@...r.kernel.org
Subject: [PATCH] arm64: tegra186: Add missing CPU PMUs

Add the description of CPU PMUs for both the Denver and A57 clusters,
which enables the perf subsystem.

Signed-off-by: Marc Zyngier <maz@...nel.org>
---
 arch/arm64/boot/dts/nvidia/tegra186.dtsi | 28 +++++++++++++++++++-----
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index fd44545e124d..6bb03668a8d3 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -1321,7 +1321,7 @@ cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		cpu@0 {
+		denver_0: cpu@0 {
 			compatible = "nvidia,tegra186-denver";
 			device_type = "cpu";
 			i-cache-size = <0x20000>;
@@ -1334,7 +1334,7 @@ cpu@0 {
 			reg = <0x000>;
 		};
 
-		cpu@1 {
+		denver_1: cpu@1 {
 			compatible = "nvidia,tegra186-denver";
 			device_type = "cpu";
 			i-cache-size = <0x20000>;
@@ -1347,7 +1347,7 @@ cpu@1 {
 			reg = <0x001>;
 		};
 
-		cpu@2 {
+		ca57_0: cpu@2 {
 			compatible = "arm,cortex-a57";
 			device_type = "cpu";
 			i-cache-size = <0xC000>;
@@ -1360,7 +1360,7 @@ cpu@2 {
 			reg = <0x100>;
 		};
 
-		cpu@3 {
+		ca57_1: cpu@3 {
 			compatible = "arm,cortex-a57";
 			device_type = "cpu";
 			i-cache-size = <0xC000>;
@@ -1373,7 +1373,7 @@ cpu@3 {
 			reg = <0x101>;
 		};
 
-		cpu@4 {
+		ca57_2: cpu@4 {
 			compatible = "arm,cortex-a57";
 			device_type = "cpu";
 			i-cache-size = <0xC000>;
@@ -1386,7 +1386,7 @@ cpu@4 {
 			reg = <0x102>;
 		};
 
-		cpu@5 {
+		ca57_3: cpu@5 {
 			compatible = "arm,cortex-a57";
 			device_type = "cpu";
 			i-cache-size = <0xC000>;
@@ -1418,6 +1418,22 @@ L2_A57: l2-cache1 {
 		};
 	};
 
+	pmu_denver {
+		compatible = "nvidia,denver-pmu", "arm,armv8-pmuv3";
+		interrupts = <GIC_SPI 320 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 321 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&denver_0 &denver_1>;
+	};
+
+	pmu_a57 {
+		compatible = "arm,cortex-a57-pmu", "arm,armv8-pmuv3";
+		interrupts = <GIC_SPI 296 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 297 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 298 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 299 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&ca57_0 &ca57_1 &ca57_2 &ca57_3>;
+	};
+
 	thermal-zones {
 		a57 {
 			polling-delay = <0>;
-- 
2.28.0