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

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>

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
index 7677764..f58fd2a 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
@@ -58,26 +58,6 @@
                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>;