linux-kernel - [PATCH 5.15 066/167] arm64: dts: broadcom: bcm4908: Fix cpu node for smp boot

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Date:   Tue, 19 Jul 2022 13:53:18 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, William Zhang <william.zhang@...adcom.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 066/167] arm64: dts: broadcom: bcm4908: Fix cpu node for smp boot

From: William Zhang <william.zhang@...adcom.com>

[ Upstream commit 8bd582ae9a71d7f14c4e0c735b2eacaf7516d626 ]

Add spin-table enable-method and cpu-release-addr properties for
cpu0 node. This is required by all ARMv8 SoC. Otherwise some
bootloader like u-boot can not update cpu-release-addr and linux
fails to start up secondary cpus.

Fixes: 2961f69f151c ("arm64: dts: broadcom: add BCM4908 and Asus GT-AC5300 early DTS files")
Signed-off-by: William Zhang <william.zhang@...adcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi b/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi
index e8907d3fe2d1..e510a6961cf9 100644
--- a/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi
@@ -29,6 +29,8 @@ cpu0: cpu@0 {
 			device_type = "cpu";
 			compatible = "brcm,brahma-b53";
 			reg = <0x0>;
+			enable-method = "spin-table";
+			cpu-release-addr = <0x0 0xfff8>;
 			next-level-cache = <&l2>;
 		};
 
-- 
2.35.1