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The workaround addresses the incorrect wiring of upper address bits in the A53 subsystem that corrupts TLBI and IC maintenance operations between A53 and A72 clusters. Previously the A72 CPUs (cpu@100, cpu@101), the cpu-map, and the cpu1-thermal zone were removed from the MEK board DT to avoid incorrect cross-cluster coherency maintenance. With the software workaround in place, restore all deleted nodes and add A72_0/A72_1 to the PMIC thermal cooling-device map so both clusters are properly managed. Signed-off-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx8qm-mek.dts | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts index 9e49ac377162b..d346958965026 100644 --- a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts +++ b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts @@ -17,16 +17,6 @@ chosen { stdout-path = &lpuart0; }; - cpus { - /delete-node/ cpu-map; - /delete-node/ cpu@100; - /delete-node/ cpu@101; - }; - - thermal-zones { - /delete-node/ cpu1-thermal; - }; - memory@80000000 { device_type = "memory"; reg = <0x00000000 0x80000000 0 0x40000000>; @@ -995,7 +985,9 @@ map0 { cooling-device = <&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, <&A53_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, <&A53_2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, - <&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + <&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&A72_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&A72_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; }; }; }; -- 2.34.1