linux-kernel - [PATCH] Revert "ARM: dts: exynos: Remove 'opp-shared' from Exynos4412 bus OPP-tables"

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Message-Id: <20210222095405.3109-1-m.reichl@fivetechno.de>
Date:   Mon, 22 Feb 2021 10:54:03 +0100
From:   Markus Reichl <m.reichl@...etechno.de>
To:     m.szyprowski@...sung.com, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Markus Reichl <m.reichl@...etechno.de>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH]  Revert "ARM: dts: exynos: Remove 'opp-shared' from Exynos4412 bus OPP-tables"

This reverts commit a23beead41a18c3be3ca409cb52f35bc02e601b9.

I'm running an Odroid-X2 as headless 24/7 server.
With plain stable 5.10.1 I had 54 up days without problems.
With opp-shared removed on kernels before and now on 5.11
my system freezes after some days on disk activity to eMMC
(rsync, apt upgrade).

The spontaneous hangs are not easy to reproduce but testing this
for several months now I am quite confident that there is something
wrong with this patch.

Signed-off-by: Markus Reichl <m.reichl@...etechno.de>
---
 arch/arm/boot/dts/exynos4412.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi
index a142fe84010b..6246df278431 100644
--- a/arch/arm/boot/dts/exynos4412.dtsi
+++ b/arch/arm/boot/dts/exynos4412.dtsi
@@ -405,6 +405,7 @@
 
 		bus_dmc_opp_table: opp-table1 {
 			compatible = "operating-points-v2";
+			opp-shared;
 
 			opp-100000000 {
 				opp-hz = /bits/ 64 <100000000>;
@@ -431,6 +432,7 @@
 
 		bus_acp_opp_table: opp-table2 {
 			compatible = "operating-points-v2";
+			opp-shared;
 
 			opp-100000000 {
 				opp-hz = /bits/ 64 <100000000>;
@@ -500,6 +502,7 @@
 
 		bus_leftbus_opp_table: opp-table3 {
 			compatible = "operating-points-v2";
+			opp-shared;
 
 			opp-100000000 {
 				opp-hz = /bits/ 64 <100000000>;
@@ -522,6 +525,7 @@
 
 		bus_display_opp_table: opp-table4 {
 			compatible = "operating-points-v2";
+			opp-shared;
 
 			opp-160000000 {
 				opp-hz = /bits/ 64 <160000000>;
@@ -533,6 +537,7 @@
 
 		bus_fsys_opp_table: opp-table5 {
 			compatible = "operating-points-v2";
+			opp-shared;
 
 			opp-100000000 {
 				opp-hz = /bits/ 64 <100000000>;
@@ -544,6 +549,7 @@
 
 		bus_peri_opp_table: opp-table6 {
 			compatible = "operating-points-v2";
+			opp-shared;
 
 			opp-50000000 {
 				opp-hz = /bits/ 64 <50000000>;
-- 
2.20.1