From: Jon Hunter <jonathanh@nvidia.com>
Date: Tue, 28 Mar 2017 11:48:38 +0000 (+0100)
Subject: arm64: tegra: Add CPU and PSCI nodes for NVIDIA Tegra210 platforms
X-Git-Tag: archive/raspbian/4.15.11-1+rpi1^2~1
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=29ebc91443b9c4fa4682e75cec0ef8cee54c6f44;p=linux.git

arm64: tegra: Add CPU and PSCI nodes for NVIDIA Tegra210 platforms

Add the CPU and PSCI nodes for the NVIDIA Tegra210 platforms so that
all CPUs can be enabled on boot. This assumes that the PSCI firmware
has been loaded during the initial bootstrap on the device before the
kernel starts (which is typically the case for these platforms). The
PSCI firmware version is set to v0.2 which aligns with the current
shipping version for Tegra.

Reported-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Tested-By: Vagrant Cascadian <vagrant@debian.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Gbp-Pq: Topic features/arm64/tegra210-smp
Gbp-Pq: Name 0001-arm64-tegra-Add-CPU-and-PSCI-nodes-for-NVIDIA-Tegra2.patch
---

diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
index d10d4430537..212e6634c9b 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
@@ -297,6 +297,29 @@
 		};
 	};
 
+	cpus {
+		cpu@0 {
+			enable-method = "psci";
+		};
+
+		cpu@1 {
+			enable-method = "psci";
+		};
+
+		cpu@2 {
+			enable-method = "psci";
+		};
+
+		cpu@3 {
+			enable-method = "psci";
+		};
+	};
+
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
+
 	regulators {
 		vdd_gpu: regulator@100 {
 			compatible = "pwm-regulator";
diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi
index be6066ff97c..d0dc0392372 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi
@@ -52,4 +52,27 @@
 			clock-frequency = <32768>;
 		};
 	};
+
+	cpus {
+		cpu@0 {
+			enable-method = "psci";
+		};
+
+		cpu@1 {
+			enable-method = "psci";
+		};
+
+		cpu@2 {
+			enable-method = "psci";
+		};
+
+		cpu@3 {
+			enable-method = "psci";
+		};
+	};
+
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
 };