Support and General Use > Hardware
Sansа Clip Zip - Improve battery life
Mihail Zenkov:
No. We should remove special define for fuze v2 and leave only #define AS3525_DRAM_FREQ 96000000.
About rolo: if we move reseting CVDD1 to system-as3525.c we cannot boot old stable firmware as they don't (re)set CVDD1.
nick_p:
Would this patch also be effective on a Sansa e200v2?
saratoga:
--- Quote from: nick_p on December 10, 2014, 12:05:07 AM ---Would this patch also be effective on a Sansa e200v2?
--- End quote ---
No, different AMS (v1 not v2) processor. Although frequency scaling was never quite worked out on that chip either, so a similar approach might work.
Edit: See http://www.rockbox.org/tracker/task/11765
Edit2: SD has been improved some since those days. It might not be too hard to work out frequency scaling on the AMSv1 devices if anyone is interested.
404_user_not_found:
--- Quote from: saratoga on December 06, 2014, 05:31:25 PM ---If anyone wants to try the above patch (I enabled it for the clip+ as well). Tested and working on my devices, but I'm curious if they're good for everyone else.
--- End quote ---
I tried the latest version of patch (misprint) patch on my sansa clip+. Works without an any crashes after some hours of listening FLAC (CD Audio quality) with disabled DSP but I don't noticed any changes of remaining time (before 10 hours and after 10 hours) and I don't remember how quickly without a patch player drains a battery. I fully sure that I successfully applied a patch because I noticed a new menu (System>Debug>CPU Frequency) that absent in stable 3.13 version. So, to be fully sure I will try a battery test.
Mihail Zenkov:
You try old patch - look at date, try patch from this topic or gerrit: http://gerrit.rockbox.org/r/#/c/1062/
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