arm64: dts: meson: remove CPU opps below 1GHz for G12A boards

[ Upstream commit 3cbd431c2b34d84605d358c8c57654193fd661fb ]

Amlogic G12A 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: b190056fa9ee ("arm64: dts: meson-g12a: add cpus OPP table")
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Link: https://lore.kernel.org/r/20230119053031.21400-1-christianshewitt@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
index fb0ab27d1f642dbe5e7100f737ea64b7a69d5eb1..6eaceb717d6172f880d011856f2684b6c1f6a335 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
@@ -57,26 +57,6 @@
                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 <666666666>;
-                       opp-microvolt = <731000>;
-               };
-
                opp-1000000000 {
                        opp-hz = /bits/ 64 <1000000000>;
                        opp-microvolt = <731000>;