On Tue, 22 Jan 2019 at 16:57, Carlo Caione <ccaione@xxxxxxxxxxxx> wrote: > The boot from eMMC is currently broken on the NXP i.MX8MQ EVK board. > When trying to boot from eMMC it fails with: > > ... > [ 1.271938] mmc1: Tuning failed, falling back to fixed sampling clock > [ 1.287429] print_req_error: I/O error, dev mmcblk1, sector 1 flags 0 > [ 1.306833] mmc1: Tuning failed, falling back to fixed sampling clock > [ 1.322325] print_req_error: I/O error, dev mmcblk1, sector 2 flags 0 > [ 1.329559] Buffer I/O error on dev mmcblk1, logical block 0, async page read > [ 1.336714] mmcblk1: unable to read partition table > ... > > The problem is the result of a partial misconfiguration of the pins and > the missing assigned clock rate. > > Signed-off-by: Carlo Caione <ccaione@xxxxxxxxxxxx> Tested on my i.MX8MQ-EVK. I'm still booting from the SD card, but I can confirm it resolves the indicated I/O errors during boot and I can now see and mount the partitions on the eMMC. Tested-by: Chris Spencer <christopher.spencer@xxxxxxxxx>
