linux-kernel - [PATCH] arm64: dts: broadcom: bcm4908: Fix cpu and timer node

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Date:   Thu,  7 Jul 2022 19:18:08 -0700
From:   William Zhang <william.zhang@...adcom.com>
To:     Linux ARM List <linux-arm-kernel@...ts.infradead.org>
Cc:     Broadcom Kernel List <bcm-kernel-feedback-list@...adcom.com>,
        William Zhang <william.zhang@...adcom.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rafał Miłecki <rafal@...ecki.pl>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: broadcom: bcm4908: Fix cpu and timer node

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.

Also fix the cpu mask in the interrupts property of the timer node
for dual core bcm4906 SoC.

Signed-off-by: William Zhang <william.zhang@...adcom.com>

---

 arch/arm64/boot/dts/broadcom/bcm4908/bcm4906.dtsi | 8 ++++++++
 arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm4908/bcm4906.dtsi b/arch/arm64/boot/dts/broadcom/bcm4908/bcm4906.dtsi
index 66023d553524..d084c33d5ca8 100644
--- a/arch/arm64/boot/dts/broadcom/bcm4908/bcm4906.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm4908/bcm4906.dtsi
@@ -9,6 +9,14 @@ cpus {
 		/delete-node/ cpu@3;
 	};
 
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>;
+	};
+
 	pmu {
 		compatible = "arm,cortex-a53-pmu";
 		interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
diff --git a/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi b/arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi
index a4be040a00c0..967d2cd3c3ce 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>;
 		};
 
-- 
2.34.1


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