Re: [PATCH v4] arm64: errata: Add NXP iMX8QM workaround for A53 cache coherency issue

[Peng Fan]

Hi All,

On Mon, Aug 24, 2026 at 12:02:04PM +0800, Peng Fan (OSS) wrote:
>From: Peng Fan <peng.fan@xxxxxxx>
>
>According to NXP errata document IMX8_1N94W[1], the i.MX8QuadMax SoC
>suffers from a cache coherency issue (ERR050104). The upper bits, above
>bit 35, of the ARADDR and ACADDR buses within the Arm A53 subsystem
>have been incorrectly connected. This causes some TLBI and IC
>maintenance operations exchanged between the A53 and A72 core clusters
>to be corrupted.
>

Any comments?

Thanks,
Peng