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Sansа Clip Zip - Improve battery life

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Mihail Zenkov:
Yes, very strange. Can you try  0x80 | 47 + attached patch?

EDIT: wrong patch, reattached.

rbert:

--- Quote from: Mihail Zenkov on February 09, 2015, 11:17:38 AM ---Yes, very strange. Can you try  0x80 | 47 + attached patch?

--- End quote ---
Thank you very much, it works.
Now I can test lower voltages.

EDIT:
no problems with 0x80 | 20
I can now confirm, that my fuzev2 variant0 works like a charm with
- Patch Set 7 471ced2d0f1df1f6e53824197c93e52563fdac3a
- rockbox-restore_irq.patch.txt
- the same changes in firmware/export/config/sansafuzev2.h as in the other config files

EDIT2:
for anyone else to test:
http://gregory.bplaced.net/rockbox/rockbox-fuzev2-1.7z

saratoga:

--- Quote from: Mihail Zenkov on February 09, 2015, 11:17:38 AM ---Yes, very strange. Can you try  0x80 | 47 + attached patch?

EDIT: wrong patch, reattached.

--- End quote ---

That looks like an interesting race condition indeed. 

Edit:  Does it make sense to also protect the ascodec_read_pmu call from an IRQ?  Seems like both could be corrupted.

Mihail Zenkov:
I read IRC and I agree with jhMikeS - we should try fix it deeper.  But it to hard for me :(

Zip also have problem with ascodec_write_pmu - I do this changes in patch V4, but I could not reproduce this behavior again and revert in V5.

jhMikeS:
Okiedokie: http://gerrit.rockbox.org/1145/

Whatever the case if it's hard to reproduce, the driver has a problem that this fixes.

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