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Am Donnerstag, 22. Oktober 2026, 03:50:02 Mitteleurop=C3=A4ische Sommerzeit= schrieb Peng Fan (OSS): > From: Peng Fan >=20 > The ERR050104 cache coherency workaround for i.MX8QM/8QP has been > merged upstream (d44e08dab27d). 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. >=20 > Previously the A72 CPUs (cpu@100, cpu@101) and cpu-map were removed > from the TQMa8QM DTSI with an explicit comment "Due to missing > workaround for ERR050104". With the software workaround is in place, > remove the workaround-comment block and restore the full SMP topology. >=20 > Signed-off-by: Peng Fan > --- > arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi | 7 ------- > 1 file changed, 7 deletions(-) >=20 > diff --git a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi b/arch/arm= 64/boot/dts/freescale/imx8qm-tqma8qm.dtsi > index f0e398eb2aad7..8cd6e75eb87a9 100644 > --- a/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8qm-tqma8qm.dtsi > @@ -15,13 +15,6 @@ / { > model =3D "TQ-Systems i.MX8QM TQMa8QM"; > compatible =3D "tq,imx8qm-tqma8qm", "fsl,imx8qm"; > =20 > - /* Due to missing workaround for ERR050104 */ > - cpus { > - /delete-node/ cpu-map; > - /delete-node/ cpu@100; > - /delete-node/ cpu@101; > - }; > - While the patch itself is correct, it is not sufficient. Instead please revert commit 5d20f1ccb3393 ("arm64: dts: imx8qm-tqma8qm-mba8x: Disable Cortex-A72 cluster"). This will restore the thermal zone for cpu1-cluster. This commit was created with the intention to be reverted, once the errata has been dealt with. With the revert: Reviewed-by: Alexander Stein Thanks and best regards, Alexander > memory@80000000 { > device_type =3D "memory"; > /* >=20 >=20 =2D-=20 TQ-Systems GmbH | M=C3=BChlstra=C3=9Fe 2, Gut Delling | 82229 Seefeld, Germ= any Amtsgericht M=C3=BCnchen, HRB 105018 Gesch=C3=A4ftsf=C3=BChrer: Detlef Schneider, R=C3=BCdiger Stahl, Stefan Sch= neider http://www.tq-group.com/