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From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Magnus Damm <magnus.damm@gmail.com>
Cc: Fabrizio Castro <fabrizio.castro.jz@renesas.com>,
	Chris Paterson <Chris.Paterson2@renesas.com>,
	linux-renesas-soc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH] arm64: dts: renesas: Add missing opp-suspend properties
Date: Thu, 27 May 2021 15:42:42 +0200
Message-ID: <45a061c3b0463aac7d10664f47c4afdd999da50d.1619699721.git.geert+renesas@glider.be> (raw)

Tag the highest "Power Optimized" (1.5 GHz) Cortex-A57 operating point
table entries for the RZ/G2M, R-Car M3-W and M3-W+ SoCs with the
"opp-suspend" property.  This makes sure the system will enter suspend
in the same performance state as it will be resumed by the firmware
later, avoiding state inconsistencies after resume.

Based on a patch for R-Car M3-W in the BSP by Takeshi Kihara
<takeshi.kihara.df@renesas.com>.

Fixes: 800037e815b91d8c ("arm64: dts: renesas: r8a774a1: Add operating points")
Fixes: da7e3113344fda50 ("arm64: dts: renesas: r8a7796: Add OPPs table for cpu devices")
Fixes: f51746ad7d1ff6b4 ("arm64: dts: renesas: Add Renesas R8A77961 SoC support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Somehow I failed to send this patch, which is a contextual dependency for
"[PATCH] arm64: dts: renesas: r8a7796[01]: Fix OPP table entry voltages"
https://lore.kernel.org/r/b9e9db907514790574429b83d070c823b36085ef.1619699909.git.geert+renesas@glider.be/

To be queued in renesas-devel for v5.14.

 arch/arm64/boot/dts/renesas/r8a774a1.dtsi | 1 +
 arch/arm64/boot/dts/renesas/r8a77960.dtsi | 1 +
 arch/arm64/boot/dts/renesas/r8a77961.dtsi | 1 +
 3 files changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a774a1.dtsi b/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
index c3d312af6fe95f2c..78c121a89f11b8ae 100644
--- a/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
@@ -76,6 +76,7 @@ opp-1500000000 {
 			opp-hz = /bits/ 64 <1500000000>;
 			opp-microvolt = <820000>;
 			clock-latency-ns = <300000>;
+			opp-suspend;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/renesas/r8a77960.dtsi b/arch/arm64/boot/dts/renesas/r8a77960.dtsi
index d21be2f195b3be18..63bb395a6a64499a 100644
--- a/arch/arm64/boot/dts/renesas/r8a77960.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77960.dtsi
@@ -75,6 +75,7 @@ opp-1500000000 {
 			opp-hz = /bits/ 64 <1500000000>;
 			opp-microvolt = <820000>;
 			clock-latency-ns = <300000>;
+			opp-suspend;
 		};
 		opp-1600000000 {
 			opp-hz = /bits/ 64 <1600000000>;
diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
index 941f18e5f5d29cda..c8b73108a4c8185d 100644
--- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
@@ -64,6 +64,7 @@ opp-1500000000 {
 			opp-hz = /bits/ 64 <1500000000>;
 			opp-microvolt = <820000>;
 			clock-latency-ns = <300000>;
+			opp-suspend;
 		};
 		opp-1600000000 {
 			opp-hz = /bits/ 64 <1600000000>;
-- 
2.25.1


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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-27 13:42 Geert Uytterhoeven [this message]
2021-05-28  6:33 ` Niklas Söderlund

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