On Fri, Feb 12, 2021 at 1:02 PM Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote: > After set PROBE_PREFER_ASYNCHRONOUS flag on the mmc host drivers, > the order of /dev/mmcblkN was not fixed in some SoCs which have > multiple SDHI and/or MMCIF controllers. So, we were hard to use > such a device as rootfs by using the kernel parameter like > "root=/dev/mmcblkNpM". > > According to the discussion on a mainling list [1], we can add > mmc aliases to fix the issue. So, add such aliases into R-Car Gen2 > board dts files. Note that, since R-Car Gen2 is even more complicated > about SDHI and/or MMCIF channels variations and they share pins, > add the aliases into board dts files instead of SoC dtsi files. > > [1] > https://lore.kernel.org/linux-arm-kernel/CAPDyKFptyEQNJu8cqzMt2WRFZcwEdjDiytMBp96nkoZyprTgmA@xxxxxxxxxxxxxx/ > > Fixes: 7320915c8861 ("mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.14") > Fixes: 21b2cec61c04 ("mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.4") > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> i.e. will queue in renesas-devel for v5.13. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
