Comment 1 for bug 1914800

Hardware Certification have completed testing this -proposed kernel. No regressions were observed, results are available here:
Rpi2b-armhf: https://certification.canonical.com/hardware/201906-27188/submission/203366/
Rpi3b-arm64: https://certification.canonical.com/hardware/201811-26649/submission/203397/
Rpi3b-armhf: https://certification.canonical.com/hardware/201907-27197/submission/203403/
Rpi3a+-arm64: https://certification.canonical.com/hardware/201907-27199/submission/203399/
Rpi3a+-armhf: https://certification.canonical.com/hardware/201901-26785/submission/203407/
Rpi3b+-arm64: https://certification.canonical.com/hardware/201907-27198/submission/203387/
Rpi3b+-armhf: https://certification.canonical.com/hardware/201810-26542/submission/203394/
Rpi400-arm64: https://certification.canonical.com/hardware/202010-28328/submission/203406/
Rpi400-armhf: https://certification.canonical.com/hardware/202010-28328/submission/203431/
Rpi4b-1g-arm64: https://certification.canonical.com/hardware/201911-27471/submission/203386/
Rpi4b-1g-armhf: https://certification.canonical.com/hardware/201910-27407/submission/203389/
Rpi4b-2g-arm64: https://certification.canonical.com/hardware/201911-27507/submission/203390/
Rpi4b-2g-armhf: https://certification.canonical.com/hardware/201911-27506/submission/203393/
Rpi4b-4g-arm64: https://certification.canonical.com/hardware/201911-27455/submission/203538/
Rpi4b-4g-armhf: https://certification.canonical.com/hardware/201911-27455/submission/203391/
Rpi4b-8g-arm64: https://certification.canonical.com/hardware/202004-27866/submission/203396/
Rpi4b-8g-armhf: https://certification.canonical.com/hardware/202004-27866/submission/203410/
CM3-arm64: No space to upgrade kernel
CM3-armhf: https://certification.canonical.com/hardware/201711-25992/submission/203378/
CM3+-arm64: https://certification.canonical.com/hardware/201908-27277/submission/203376/
CM3+-armhf: https://certification.canonical.com/hardware/201908-27277/submission/203377/
CM4L-arm64: https://certification.canonical.com/hardware/202011-28409/submission/203426/
CM4L-armhf: https://certification.canonical.com/hardware/202011-28409/submission/203628