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Message-Id: <20220504152929.901844093@linuxfoundation.org>
Date: Wed, 4 May 2022 18:44:11 +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,
Christian Hewitt <christianshewitt@...il.com>,
Neil Armstrong <narmstrong@...libre.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 30/84] arm64: dts: meson: remove CPU opps below 1GHz for G12B boards
From: Christian Hewitt <christianshewitt@...il.com>
[ Upstream commit 6c4d636bc00dc17c63ffb2a73a0da850240e26e3 ]
Amlogic G12B devices experience CPU stalls and random board wedges when
the system idles and CPU cores clock down to lower opp points. Recent
vendor kernels include a change to remove 100-250MHz and other distro
sources also remove the 500/667MHz points. Unless all 100-667Mhz opps
are removed or the CPU governor forced to performance stalls are still
observed, so let's remove them to improve stability and uptime.
Fixes: b96d4e92709b ("arm64: dts: meson-g12b: support a311d and s922x cpu operating points")
Signed-off-by: Christian Hewitt <christianshewitt@...il.com>
Reviewed-by: Neil Armstrong <narmstrong@...libre.com>
Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
Link: https://lore.kernel.org/r/20220210100638.19130-2-christianshewitt@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
.../boot/dts/amlogic/meson-g12b-a311d.dtsi | 40 -------------------
.../boot/dts/amlogic/meson-g12b-s922x.dtsi | 40 -------------------
2 files changed, 80 deletions(-)
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi
index d61f43052a34..8e9ad1e51d66 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi
@@ -11,26 +11,6 @@ cpu_opp_table_0: opp-table-0 {
compatible = "operating-points-v2";
opp-shared;
- opp-100000000 {
- opp-hz = /bits/ 64 <100000000>;
- opp-microvolt = <731000>;
- };
-
- opp-250000000 {
- opp-hz = /bits/ 64 <250000000>;
- opp-microvolt = <731000>;
- };
-
- opp-500000000 {
- opp-hz = /bits/ 64 <500000000>;
- opp-microvolt = <731000>;
- };
-
- opp-667000000 {
- opp-hz = /bits/ 64 <667000000>;
- opp-microvolt = <731000>;
- };
-
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <761000>;
@@ -71,26 +51,6 @@ cpub_opp_table_1: opp-table-1 {
compatible = "operating-points-v2";
opp-shared;
- opp-100000000 {
- opp-hz = /bits/ 64 <100000000>;
- opp-microvolt = <731000>;
- };
-
- opp-250000000 {
- opp-hz = /bits/ 64 <250000000>;
- opp-microvolt = <731000>;
- };
-
- opp-500000000 {
- opp-hz = /bits/ 64 <500000000>;
- opp-microvolt = <731000>;
- };
-
- opp-667000000 {
- opp-hz = /bits/ 64 <667000000>;
- opp-microvolt = <731000>;
- };
-
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <731000>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
index 046cc332d07f..f2543da63c39 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
@@ -11,26 +11,6 @@ cpu_opp_table_0: opp-table-0 {
compatible = "operating-points-v2";
opp-shared;
- opp-100000000 {
- opp-hz = /bits/ 64 <100000000>;
- opp-microvolt = <731000>;
- };
-
- opp-250000000 {
- opp-hz = /bits/ 64 <250000000>;
- opp-microvolt = <731000>;
- };
-
- opp-500000000 {
- opp-hz = /bits/ 64 <500000000>;
- opp-microvolt = <731000>;
- };
-
- opp-667000000 {
- opp-hz = /bits/ 64 <667000000>;
- opp-microvolt = <731000>;
- };
-
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <731000>;
@@ -71,26 +51,6 @@ cpub_opp_table_1: opp-table-1 {
compatible = "operating-points-v2";
opp-shared;
- opp-100000000 {
- opp-hz = /bits/ 64 <100000000>;
- opp-microvolt = <751000>;
- };
-
- opp-250000000 {
- opp-hz = /bits/ 64 <250000000>;
- opp-microvolt = <751000>;
- };
-
- opp-500000000 {
- opp-hz = /bits/ 64 <500000000>;
- opp-microvolt = <751000>;
- };
-
- opp-667000000 {
- opp-hz = /bits/ 64 <667000000>;
- opp-microvolt = <751000>;
- };
-
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <771000>;
--
2.35.1
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