FYI, The arm device x15 running stable rc 4.19.112-rc1, 5.4.27-rc1 and 5.5.11-rc2 kernel pops up the following messages on console log, Is this a problem ? [ 0.000000] Linux version 4.19.112-rc1 (oe-user@oe-host) (gcc version 7.3.0 (GCC)) #1 SMP Thu Mar 19 12:55:45 UTC 2020 [ 15.737765] mmc1: unspecified timeout for CMD6 - use generic [ 16.754248] mmc1: unspecified timeout for CMD6 - use generic [ 16.842071] mmc1: unspecified timeout for CMD6 - use generic ... [ 20.580541] mmc1: unspecified timeout for CMD6 - use generic [ 20.588216] mmc1: unspecified timeout for CMD6 - use generic [ 20.604011] mmc1: unspecified timeout for CMD6 - use generic ref: https://lkft.validation.linaro.org/scheduler/job/1298207#L4037 https://lkft.validation.linaro.org/scheduler/job/1298945#L4132 https://lkft.validation.linaro.org/scheduler/job/1299973#L4232 - Naresh