linux-kernel - [PATCH AUTOSEL 5.1 08/39] arm64: dts: ls1028a: Fix CPU idle fail.

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Date:   Tue,  2 Jul 2019 22:14:43 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Ran Wang <ran.wang_1@....com>, Shawn Guo <shawnguo@...nel.org>,
        Sasha Levin <sashal@...nel.org>, devicetree@...r.kernel.org
Subject: [PATCH AUTOSEL 5.1 08/39] arm64: dts: ls1028a: Fix CPU idle fail.

From: Ran Wang <ran.wang_1@....com>

[ Upstream commit 53f2ac9d3aa881ed419054076042898b77c27ee4 ]

PSCI spec define 1st parameter's bit 16 of function CPU_SUSPEND to
indicate CPU State Type: 0 for standby, 1 for power down. In this
case, we want to select standby for CPU idle feature. But current
setting wrongly select power down and cause CPU SUSPEND fail every
time. Need this fix.

Fixes: 8897f3255c9c ("arm64: dts: Add support for NXP LS1028A SoC")
Signed-off-by: Ran Wang <ran.wang_1@....com>
Signed-off-by: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
index 2896bbcfa3bb..228872549f01 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
@@ -28,7 +28,7 @@
 			enable-method = "psci";
 			clocks = <&clockgen 1 0>;
 			next-level-cache = <&l2>;
-			cpu-idle-states = <&CPU_PH20>;
+			cpu-idle-states = <&CPU_PW20>;
 		};
 
 		cpu1: cpu@1 {
@@ -38,7 +38,7 @@
 			enable-method = "psci";
 			clocks = <&clockgen 1 0>;
 			next-level-cache = <&l2>;
-			cpu-idle-states = <&CPU_PH20>;
+			cpu-idle-states = <&CPU_PW20>;
 		};
 
 		l2: l2-cache {
@@ -53,13 +53,13 @@
 		 */
 		entry-method = "arm,psci";
 
-		CPU_PH20: cpu-ph20 {
-			compatible = "arm,idle-state";
-			idle-state-name = "PH20";
-			arm,psci-suspend-param = <0x00010000>;
-			entry-latency-us = <1000>;
-			exit-latency-us = <1000>;
-			min-residency-us = <3000>;
+		CPU_PW20: cpu-pw20 {
+			  compatible = "arm,idle-state";
+			  idle-state-name = "PW20";
+			  arm,psci-suspend-param = <0x0>;
+			  entry-latency-us = <2000>;
+			  exit-latency-us = <2000>;
+			  min-residency-us = <6000>;
 		};
 	};
 
-- 
2.20.1