[U-Boot] [PATCH 0/2] Improve Raspberry Pi mmc writes.

[Alex Deymo]

2017-04-06 21:53 GMT-07:00 Jaehoon Chung <jh80.chung at samsung.com>:

> On 04/02/2017 03:58 PM, Alex Deymo wrote:
> > When experimenting with fastboot from U-Boot on the Raspberry Pi 3 we
> > found that the writes to the sdcard are much more slow than when
> > accessing it from the userspace. These two patches speed up the write
> > and allow us to reliably write the sdcard from U-Boot.
>
>
> I'm not sure you can see this email.
> If you can't receive this, I will resend with my gmail account.
>
I can, I'm on the list. If you cc me directly the chances of me seeing it
are much higher.


I want to know the situation after removing the BROKEN_R1B quirks.
>

How would I test that?
Basically trying to write 100s of MB to mmc on the rpi3 was failing very
often after applying the "Speed up mmc writes" patch. Without said patch
this was not a problem because the write were sooooooo slow that we would
never send two write commands too close to each other. Do you want me
re-test applying only "Speed up mmc writes." on top of master without the
second patch (Wait for SDHCI_INT_DATA_END when transferring)? Or just
re-test the mmc speed/reliability without neither of these patches?
deymo