Hey all,
On 21-08-15 09:57, Hans de Goede wrote:
Hi,
On 20-08-15 15:14, Stefan Monnier wrote:
IIUC there's a general sentiments that most SD cards are crap (and
indeed mine are all old&cheap), but I find it striking that they work
"everywhere" *except* for U-boot reading a large file.
What sunxi board(s) are you using ?
I have a Mele A2000, a pair of "cheap mini-x style a10s box",
a BananaPi, an OrangePi-mini, and a Cubietruck, but in this present
round of (involuntary) tests, I used the BananaPi and the OrangePi-mini.
I've noticed this same behaviour on my Cubietruck (and I think my
lime2's) with nearly all my SD cards. On my CT I use a SSD and only have
the kernel + u-boot on the SD so used some old small (128mb) sd cards
and was surprised it wouldn't boot any more. Using some other 8 Gig UHS1
rated sd card it works as expected.
I see if I can build a new U-boot with those power changes to see if
that makes a difference.
Olliver
So both A20 devices, I did a fix recently(ish) to properly set the sample
clock phase for the mmc clock in u-boot. Are you using a recent u-boot ?
Also I see in the fex files for these boards that they are using 1.3V
instead of 1.25V for dcdc3, something else you can test is to edit
board/sunxi/board.c and then change:
power_failed |= axp209_set_dcdc3(1250);
into:
power_failed |= axp209_set_dcdc3(1300);
Built u-boot that way and see if it helps.
Regards,
Hans
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