[PATCH] Fix Linux reboot on MT7988 using EFI and PSCI

[Adrian Ban]

From: EasyNetDev <devel at easynet.dev>

When booting Linux Kernel with U-Boot EFI -> GRUB EFI -> Linux Kernel
reboot is not possible using "system reboot".

Adding PSCI node in devicetree fixes this issue.

Signed-off-by: Adrian Ban <devel at easynet.dev>
---
 arch/arm/dts/mt7988.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/dts/mt7988.dtsi b/arch/arm/dts/mt7988.dtsi
index 2d57c6f5709..e907cf89396 100644
--- a/arch/arm/dts/mt7988.dtsi
+++ b/arch/arm/dts/mt7988.dtsi
@@ -51,6 +51,11 @@
 		};
 	};
 
+	psci {
+		compatible  = "arm,psci-0.2";
+		method      = "smc";
+	};
+
 	system_clk: dummy40m {
 		compatible = "fixed-clock";
 		clock-frequency = <40000000>;
-- 
2.51.0