Thread (35 messages) 35 messages, 7 authors, 2015-02-25

[PATCH v4 1/3] mmc: dw_mmc: update clock after host reach a stable voltage

From: dianders@chromium.org (Doug Anderson)
Date: 2015-02-20 19:05:29
Also in: linux-mmc, lkml

Hi,

On Thu, Feb 19, 2015 at 5:04 PM, Doug Anderson [off-list ref] wrote:
Hi,

On Thu, Feb 19, 2015 at 3:49 PM, Doug Anderson [off-list ref] wrote:
quoted
I've got that coded up but I'm still testing it...  If you want to try
it too, you can find it at
<https://chromium-review.googlesource.com/251341>.

Note that without my patch I find that I _really_ need Addy's patch to
make sure that the card isn't busy in setup_bus.  With my patch Addy's
code catches the card busy less often.  I'm still trying to see if
there's a way to totally remove the need for his setup_bus and still
trying to grok all the patches flying around...
Ah, this might be the magic needed:

https://chromium-review.googlesource.com/251344


I think that together with the previous patch things are happy for me
without any of Addy's patches, though it's the end of my work day and
I haven't given this nearly as much testing as I'd like.

I'll continue testing tomorrow and then post both patches together upstream.
OK, posted three patches upstream...

A little hard to follow all the patches flying around (so I'll
probably reply a few different places with the same info), but I
believe that all of Addy's patches (with the exception of the one
intended to fix mmc_test which needs to be spun by him for a bugfix)
can be replaced with:

* mmc: dw_mmc: Don't start commands while busy
  https://patchwork.kernel.org/patch/5858221/

* mmc: dw_mmc: Make sure we only adjust the clock when power is on
  https://patchwork.kernel.org/patch/5858261/

* mmc: dw_mmc: Give a good reset after we give power
  https://patchwork.kernel.org/patch/5858281/


In order to avoid further spreading info out among several patches,
I'd request that you don't respond here but instead respond to my
posted patches.  Thanks!

-Doug
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