FYI: head -r338341 on Pine64+ 2GB for a microsdhc boot media: mmc0: Failed to set VCCQ for card at relative address 43690
Emmanuel Vadot
manu at bidouilliste.com
Wed Aug 29 11:53:51 UTC 2018
On Tue, 28 Aug 2018 23:26:36 -0700
Mark Millard via freebsd-arm <freebsd-arm at freebsd.org> wrote:
> aw_mmc0: <Allwinner Integrated MMC/SD controller> mem 0x1c0f000-0x1c0ffff irq 8 on simplebus0
> mmc0: <MMC/SD bus> on aw_mmc0
> . . .
> mmcsd0: 32GB <SDHC SE32G 8.0 SN <REPLACED> MFG 07/2017 by 3 SD> at mmc0 50.0MHz/4bit/32768-block
> mmc0: Failed to set VCCQ for card at relative address 43690
>
> It seem to tolerate that it did-not/could-not set the value.
>
>
>
> It appears that sysutils/mmc-utils (still) just
> gets AW_MMC_INT_RESP_TIMEOUT / ioctl: Operation timed out
> for: mmc extcsd read /dev/mmcsd0 (once it is not mounted).
>
> # mmc extcsd read /dev/mmcsd0 | more
> open: Operation not permitted
>
> # df -m
> Filesystem 1M-blocks Used Avail Capacity Mounted on
> /dev/ufs/PINE642GBrootfs 29400 16901 10147 62% /
> devfs 0 0 0 100% /dev
> /dev/label/PINE642GBboot 63 0 63 0% /boot/efi
>
> Booting with / on a USB device instead and dismounting /boot/efi
> (on mmcsd0) gets:
>
> # mmc extcsd read /dev/mmcsd0 | more
> AW_MMC_INT_RESP_TIMEOUT
> ioctl: Operation timed out
> Could not read EXT_CSD from /dev/mmcsd0
>
>
> ===
> Mark Millard
> marklmi at yahoo.com
> ( dsl-only.net went
> away in early 2018-Mar)
>
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It's harmless, the mmc stack tries to set the voltage for the io
lines, since there is no regulator for it on this board the aw_mmc code
returns EOPNOTSUPP.
--
Emmanuel Vadot <manu at bidouilliste.com> <manu at freebsd.org>
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