linux-kernel - [PATCH 3/3] arm64: dts: meson-g12b: specify suspend OPP

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Date:   Tue, 27 Aug 2019 12:03:07 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     khilman@...libre.com
Cc:     linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Neil Armstrong <narmstrong@...libre.com>
Subject: [PATCH 3/3] arm64: dts: meson-g12b: specify suspend OPP

Tag the 1,2GHz OPPs as suspend OPP to be set before going in suspend mode.

It has been reported that using various OPPs can lead to error or
resume with a different OPP from the ROM, thus use this safe OPP as
it is the default OPP used by the BL2 boot firmware on the 2 clusters.

Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
 arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi | 2 ++
 arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi
index d61f43052a34..00ea181bc018 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi
@@ -39,6 +39,7 @@
 		opp-1200000000 {
 			opp-hz = /bits/ 64 <1200000000>;
 			opp-microvolt = <781000>;
+			opp-suspend;
 		};
 
 		opp-1398000000 {
@@ -99,6 +100,7 @@
 		opp-1200000000 {
 			opp-hz = /bits/ 64 <1200000000>;
 			opp-microvolt = <751000>;
+			opp-suspend;
 		};
 
 		opp-1398000000 {
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
index 046cc332d07f..d68323c6c780 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
@@ -39,6 +39,7 @@
 		opp-1200000000 {
 			opp-hz = /bits/ 64 <1200000000>;
 			opp-microvolt = <731000>;
+			opp-suspend;
 		};
 
 		opp-1398000000 {
@@ -99,6 +100,7 @@
 		opp-1200000000 {
 			opp-hz = /bits/ 64 <1200000000>;
 			opp-microvolt = <771000>;
+			opp-suspend;
 		};
 
 		opp-1398000000 {
-- 
2.22.0