Sansа Clip Zip - Improve battery life

[Mihail Zenkov]

http://pastebin.com/tTXpLSsj

Patch with cleaned up USB.

You can also remove  frequency_lock.

[saratoga]

One other strange thing I noticed, on the clipv2, the player was not able to read button presses with this patch (but scaling still disabled).  Will look into that as well.

Edit:  rebuilding seems to have fixed it, maybe just a bad binary. 

Edit2:  http://gerrit.rockbox.org/r/#/c/1062/

[Mihail Zenkov]

Good.

[saratoga]

Test builds:

http://mit.edu/mgg6/www/rockbox-clipzip.zip
http://mit.edu/mgg6/www/rockbox-clipplus.zip
http://mit.edu/mgg6/www/rockbox-clipv2.zip

[saratoga]

Does this patch set the PCLK correctly on the Fuze v2?  The ifdef in clock-target.h is a little confusing to me (isn't the base PCLK 19.2 MHz?)

[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]

Would this patch also be effective on a Sansa e200v2?

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]

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.

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/

[404_user_not_found]

You try old patch - look at date, try patch from this topic or gerrit: http://gerrit.rockbox.org/r/#/c/1062/

Misprint. Of course I used that patch (Patch set 5) from gerrit, not from abandoned rockbox tracker. That old patch just don't compatible with ASMv2 it's for AMSv1. Fixed previous post.

[Mihail Zenkov]

Strange - patch look good, but probably we have problem with boost/unboost in some another place. You can try my last patch in this topic - it have slightingly different way for boost/unboost for usb. And in any case check frequency in System>Debug>CPU Frequency as saratoga mention (http://www.anythingbutipod.com/forum/showpost.php?p=650941&postcount=635).

[404_user_not_found]

Strange - patch look good

I think my sansa clip+ just wrongly shows a remaining time. After 8 hours charge drops to 50%, remaining time is around 8:00 hours. Sometimes remaining time jumps to random values.

[saratoga]

We haven't updated the time remaining calculation show it won't change.

[404_user_not_found]

Looks strange, but "improve_battery_life.patch" improves sometimes decode time and lowers MHZ needed for decoding (look for example vorbis_500.ogg). I can't understand, why player decodes sometimes faster with energy saving patch.

Sansa Clip+, Untouched rockbox version 3.13 without "improve_battery_life.patch"

Code: [Select]

a52_stereo_192.ac3
176325 of 176000
Decode time - 13.85s
File duration - 176.00s
1270.75% realtime
18.88MHz needed for realtime

ape_c1000.ape
175906 of 175906
Decode time - 35.94s
File duration - 175.90s
489.42% realtime
49.03MHz needed for realtime

ape_c2000.ape
175906 of 175906
Decode time - 48.55s
File duration - 175.90s
362.30% realtime
66.24MHz needed for realtime

ape_c3000.ape
175906 of 175906
Decode time - 69.65s
File duration - 175.90s
252.54% realtime
95.03MHz needed for realtime

ape_c4000.ape
175906 of 175906
Decode time - 169.07s
File duration - 175.90s
104.03% realtime
230.70MHz needed for realtime

ape_c5000.ape
175906 of 175906
Decode time - 694.27s
File duration - 175.90s
25.33% realtime
947.49MHz needed for realtime

applelossless.m4a
175906 of 175906
Decode time - 26.95s
File duration - 175.90s
652.69% realtime
36.77MHz needed for realtime

atrac3_lp2_132.oma
174294 of 176360
Decode time - 26.16s
File duration - 176.36s
674.15% realtime
35.60MHz needed for realtime

cook_mono_32.ra
177449 of 175904
Decode time - 12.30s
File duration - 175.90s
1430.08% realtime
16.78MHz needed for realtime

cook_mono_64.ra
176431 of 175904
Decode time - 13.63s
File duration - 175.90s
1290.53% realtime
18.59MHz needed for realtime

cook_stereo_32.ra
176431 of 175904
Decode time - 12.07s
File duration - 175.90s
1457.33% realtime
16.46MHz needed for realtime

cook_stereo_64.ra
176431 of 175906
Decode time - 27.10s
File duration - 175.90s
649.07% realtime
36.97MHz needed for realtime

cook_stereo_96.ra
176431 of 175906
Decode time - 27.88s
File duration - 175.90s
630.91% realtime
38.04MHz needed for realtime

flac_5.flac
175906 of 175906
Decode time - 6.47s
File duration - 175.90s
2718.70% realtime
8.82MHz needed for realtime

flac_8.flac
175906 of 175906
Decode time - 6.92s
File duration - 175.90s
2541.90% realtime
9.44MHz needed for realtime

lame_096.mp3
175951 of 175968
Decode time - 17.40s
File duration - 175.96s
1011.26% realtime
23.73MHz needed for realtime

lame_128.mp3
175909 of 175960
Decode time - 22.68s
File duration - 175.96s
775.83% realtime
30.93MHz needed for realtime

lame_192.mp3
175909 of 175960
Decode time - 23.78s
File duration - 175.96s
739.94% realtime
32.43MHz needed for realtime

lame_256.mp3
175909 of 175960
Decode time - 24.07s
File duration - 175.96s
731.03% realtime
32.83MHz needed for realtime

lame_320.mp3
175909 of 175960
Decode time - 25.02s
File duration - 175.96s
703.27% realtime
34.12MHz needed for realtime

mpc_096.mpc
175906 of 175906
Decode time - 16.94s
File duration - 175.90s
1038.37% realtime
23.11MHz needed for realtime

mpc_128.mpc
175906 of 175906
Decode time - 17.91s
File duration - 175.90s
982.13% realtime
24.43MHz needed for realtime

mpc_170.mpc
175906 of 175906
Decode time - 18.40s
File duration - 175.90s
955.97% realtime
25.10MHz needed for realtime

mpc_224.mpc
175906 of 175906
Decode time - 18.80s
File duration - 175.90s
935.63% realtime
25.65MHz needed for realtime

mpc_300.mpc
175906 of 175906
Decode time - 19.06s
File duration - 175.90s
922.87% realtime
26.00MHz needed for realtime

mpc_350.mpc
175906 of 175906
Decode time - 19.38s
File duration - 175.90s
907.63% realtime
26.44MHz needed for realtime

nero_096.m4a
175906 of 175966
Decode time - 31.36s
File duration - 175.96s
561.09% realtime
42.77MHz needed for realtime

nero_128.m4a
175906 of 175966
Decode time - 32.43s
File duration - 175.96s
542.58% realtime
44.23MHz needed for realtime

nero_192.m4a
175906 of 175966
Decode time - 33.87s
File duration - 175.96s
519.51% realtime
46.19MHz needed for realtime

nero_256.m4a
175906 of 175966
Decode time - 35.22s
File duration - 175.96s
499.60% realtime
48.03MHz needed for realtime

nero_320.m4a
175906 of 175966
Decode time - 36.56s
File duration - 175.96s
481.29% realtime
49.86MHz needed for realtime

nero_400.m4a
175906 of 175966
Decode time - 37.53s
File duration - 175.96s
468.85% realtime
51.18MHz needed for realtime

nero_he_64.m4a
175906 of 176017
Decode time - 106.71s
File duration - 176.01s
164.94% realtime
145.50MHz needed for realtime

nero_hev2_64.m4a
175906 of 176034
Decode time - 129.92s
File duration - 176.03s
135.49% realtime
177.13MHz needed for realtime

opus_128k.opus
176786 of 175914
Decode time - 54.45s
File duration - 175.91s
323.06% realtime
74.28MHz needed for realtime

opus_192k.opus
176786 of 175914
Decode time - 60.93s
File duration - 175.91s
288.70% realtime
83.13MHz needed for realtime

opus_256k.opus
176786 of 175914
Decode time - 66.69s
File duration - 175.91s
263.77% realtime
90.98MHz needed for realtime

opus_32k.opus
176786 of 175914
Decode time - 40.33s
File duration - 175.91s
436.17% realtime
55.02MHz needed for realtime

opus_64k_5ms.opus
176811 of 175910
Decode time - 74.68s
File duration - 175.91s
235.55% realtime
101.88MHz needed for realtime

opus_64k_20ms.opus
176786 of 175914
Decode time - 46.99s
File duration - 175.91s
374.35% realtime
64.11MHz needed for realtime

pegase_l1_192.mp1
175908 of 175908
Decode time - 15.06s
File duration - 175.90s
1167.99% realtime
20.54MHz needed for realtime

pegase_l2_128.mp2
175897 of 175908
Decode time - 15.09s
File duration - 175.90s
1165.67% realtime
20.58MHz needed for realtime

pegase_l1_256.mp1
175908 of 175908
Decode time - 16.31s
File duration - 175.90s
1078.47% realtime
22.25MHz needed for realtime

pegase_l2_192.mp2
175897 of 175908
Decode time - 17.49s
File duration - 175.90s
1005.71% realtime
23.86MHz needed for realtime

pegase_l1_352.mp1
175908 of 175908
Decode time - 16.88s
File duration - 175.90s
1042.06% realtime
23.03MHz needed for realtime

pegase_l2_256.mp2
175897 of 175908
Decode time - 17.72s
File duration - 175.90s
992.66% realtime
24.17MHz needed for realtime

pegase_l1_448.mp1
175908 of 175908
Decode time - 17.17s
File duration - 175.90s
1024.46% realtime
23.42MHz needed for realtime

pegase_l2_384.mp2
175897 of 175908
Decode time - 17.42s
File duration - 175.90s
1009.75% realtime
23.76MHz needed for realtime

true_audio.tta
175000 of 175000
Decode time - 26.85s
File duration - 175.00s
651.76% realtime
36.82MHz needed for realtime

vorbis_500.ogg
175906 of 175906
Decode time - 54.09s
File duration - 175.90s
325.19% realtime
73.80MHz needed for realtime

vorbis_350.ogg
175906 of 175906
Decode time - 48.30s
File duration - 175.90s
364.18% realtime
65.90MHz needed for realtime

vorbis_096.ogg
175906 of 175906
Decode time - 36.59s
File duration - 175.90s
480.73% realtime
49.92MHz needed for realtime

vorbis_128.ogg
175906 of 175906
Decode time - 37.78s
File duration - 175.90s
465.59% realtime
51.54MHz needed for realtime

vorbis_192.ogg
175906 of 175906
Decode time - 41.19s
File duration - 175.90s
427.04% realtime
56.20MHz needed for realtime

vorbis_256.ogg
175906 of 175906
Decode time - 44.43s
File duration - 175.90s
395.90% realtime
60.62MHz needed for realtime

wmapro_271k.wma
174248 of 178941
Decode time - 25.56s
File duration - 178.94s
700.07% realtime
34.28MHz needed for realtime

wmapro_55k.wma
174248 of 178941
Decode time - 21.77s
File duration - 178.94s
821.95% realtime
29.19MHz needed for realtime

wmapro_80k.wma
174248 of 178941
Decode time - 22.59s
File duration - 178.94s
792.12% realtime
30.29MHz needed for realtime

wmapro_141k.wma
174248 of 178941
Decode time - 23.71s
File duration - 178.94s
754.70% realtime
31.80MHz needed for realtime

wmapro_173k.wma
174248 of 178941
Decode time - 24.23s
File duration - 178.94s
738.50% realtime
32.49MHz needed for realtime

wma_128.wma
174294 of 177504
Decode time - 23.89s
File duration - 177.50s
742.98% realtime
32.30MHz needed for realtime

wma_192.wma
174294 of 177504
Decode time - 24.39s
File duration - 177.50s
727.75% realtime
32.97MHz needed for realtime

wma_256.wma
174294 of 177504
Decode time - 24.95s
File duration - 177.50s
711.42% realtime
33.73MHz needed for realtime

wma_320.wma
174294 of 177504
Decode time - 25.47s
File duration - 177.50s
696.89% realtime
34.43MHz needed for realtime

wma_96.wma
174294 of 177504
Decode time - 23.67s
File duration - 177.50s
749.89% realtime
32.00MHz needed for realtime

wv_fastx3.wv
175900 of 175906
Decode time - 18.31s
File duration - 175.90s
960.67% realtime
24.98MHz needed for realtime

wv_normx4.wv
175900 of 175906
Decode time - 21.78s
File duration - 175.90s
807.62% realtime
29.71MHz needed for realtime

Sansa Clip+, Rockbox version 3.13 with "improve_battery_life.patch" (Patch set 5)

Code: [Select]

a52_stereo_192.ac3
176325 of 176000
Decode time - 15.65s
File duration - 176.00s
1124.60% realtime
17.07MHz needed for realtime

ape_c1000.ape
175906 of 175906
Decode time - 44.23s
File duration - 175.90s
397.69% realtime
48.27MHz needed for realtime

ape_c2000.ape
175906 of 175906
Decode time - 59.83s
File duration - 175.90s
293.99% realtime
65.30MHz needed for realtime

ape_c3000.ape
175906 of 175906
Decode time - 86.02s
File duration - 175.90s
204.48% realtime
93.89MHz needed for realtime

ape_c4000.ape
175906 of 175906
Decode time - 209.06s
File duration - 175.90s
84.13% realtime
228.21MHz needed for realtime

ape_c5000.ape
175906 of 175906
Decode time - 860.23s
File duration - 175.90s
20.44% realtime
939.33MHz needed for realtime

applelossless.m4a
175906 of 175906
Decode time - 31.99s
File duration - 175.90s
549.85% realtime
34.91MHz needed for realtime

atrac3_lp2_132.oma
174294 of 176360
Decode time - 23.98s
File duration - 176.36s
735.44% realtime
26.10MHz needed for realtime

cook_mono_32.ra
177449 of 175904
Decode time - 10.17s
File duration - 175.90s
1729.59% realtime
11.10MHz needed for realtime

cook_mono_64.ra
176431 of 175904
Decode time - 11.57s
File duration - 175.90s
1520.31% realtime
12.62MHz needed for realtime

cook_stereo_32.ra
176431 of 175904
Decode time - 10.18s
File duration - 175.90s
1727.89% realtime
11.11MHz needed for realtime

cook_stereo_64.ra
176431 of 175906
Decode time - 21.88s
File duration - 175.90s
803.93% realtime
23.88MHz needed for realtime

cook_stereo_96.ra
176431 of 175906
Decode time - 22.75s
File duration - 175.90s
773.18% realtime
24.83MHz needed for realtime

flac_5.flac
175906 of 175906
Decode time - 6.58s
File duration - 175.90s
2673.25% realtime
7.18MHz needed for realtime

flac_8.flac
175906 of 175906
Decode time - 7.12s
File duration - 175.90s
2470.50% realtime
7.77MHz needed for realtime

lame_096.mp3
175951 of 175968
Decode time - 18.15s
File duration - 175.96s
969.47% realtime
19.80MHz needed for realtime

lame_128.mp3
175909 of 175960
Decode time - 23.35s
File duration - 175.96s
753.57% realtime
25.47MHz needed for realtime

lame_192.mp3
175909 of 175960
Decode time - 24.43s
File duration - 175.96s
720.26% realtime
26.65MHz needed for realtime

lame_256.mp3
175909 of 175960
Decode time - 24.78s
File duration - 175.96s
710.08% realtime
27.03MHz needed for realtime

lame_320.mp3
175909 of 175960
Decode time - 25.87s
File duration - 175.96s
680.17% realtime
28.22MHz needed for realtime

mpc_096.mpc
175906 of 175906
Decode time - 14.59s
File duration - 175.90s
1205.62% realtime
15.92MHz needed for realtime

mpc_128.mpc
175906 of 175906
Decode time - 15.57s
File duration - 175.90s
1129.73% realtime
16.99MHz needed for realtime

mpc_170.mpc
175906 of 175906
Decode time - 15.95s
File duration - 175.90s
1102.82% realtime
17.40MHz needed for realtime

mpc_224.mpc
175906 of 175906
Decode time - 16.30s
File duration - 175.90s
1079.14% realtime
17.79MHz needed for realtime

mpc_300.mpc
175906 of 175906
Decode time - 16.58s
File duration - 175.90s
1060.91% realtime
18.09MHz needed for realtime

mpc_350.mpc
175906 of 175906
Decode time - 16.92s
File duration - 175.90s
1039.59% realtime
18.46MHz needed for realtime

nero_096.m4a
175906 of 175966
Decode time - 21.41s
File duration - 175.96s
821.85% realtime
23.36MHz needed for realtime

nero_128.m4a
175906 of 175966
Decode time - 22.57s
File duration - 175.96s
779.61% realtime
24.62MHz needed for realtime

nero_192.m4a
175906 of 175966
Decode time - 24.23s
File duration - 175.96s
726.20% realtime
26.43MHz needed for realtime

nero_256.m4a
175906 of 175966
Decode time - 25.80s
File duration - 175.96s
682.01% realtime
28.15MHz needed for realtime

nero_320.m4a
175906 of 175966
Decode time - 27.47s
File duration - 175.96s
640.55% realtime
29.97MHz needed for realtime

nero_400.m4a
175906 of 175966
Decode time - 28.79s
File duration - 175.96s
611.18% realtime
31.41MHz needed for realtime

nero_he_64.m4a
175906 of 176017
Decode time - 66.34s
File duration - 176.01s
265.31% realtime
72.36MHz needed for realtime

nero_hev2_64.m4a
175906 of 176034
Decode time - 83.76s
File duration - 176.03s
210.15% realtime
91.36MHz needed for realtime

opus_128k.opus
176786 of 175914
Decode time - 49.59s
File duration - 175.91s
354.72% realtime
54.12MHz needed for realtime

opus_192k.opus
176786 of 175914
Decode time - 57.25s
File duration - 175.91s
307.26% realtime
62.48MHz needed for realtime

opus_256k.opus
176786 of 175914
Decode time - 63.91s
File duration - 175.91s
275.24% realtime
69.75MHz needed for realtime

opus_32k.opus
176786 of 175914
Decode time - 33.42s
File duration - 175.91s
526.36% realtime
36.47MHz needed for realtime

opus_64k_5ms.opus
176811 of 175910
Decode time - 55.54s
File duration - 175.91s
316.72% realtime
60.62MHz needed for realtime

opus_64k_20ms.opus
176786 of 175914
Decode time - 41.08s
File duration - 175.91s
428.21% realtime
44.83MHz needed for realtime

pegase_l1_192.mp1
175908 of 175908
Decode time - 18.09s
File duration - 175.90s
972.36% realtime
19.74MHz needed for realtime

pegase_l2_128.mp2
175897 of 175908
Decode time - 17.95s
File duration - 175.90s
979.94% realtime
19.59MHz needed for realtime

pegase_l1_256.mp1
175908 of 175908
Decode time - 19.59s
File duration - 175.90s
897.90% realtime
21.38MHz needed for realtime

pegase_l2_192.mp2
175897 of 175908
Decode time - 20.88s
File duration - 175.90s
842.43% realtime
22.79MHz needed for realtime

pegase_l1_352.mp1
175908 of 175908
Decode time - 20.24s
File duration - 175.90s
869.07% realtime
22.09MHz needed for realtime

pegase_l2_256.mp2
175897 of 175908
Decode time - 21.07s
File duration - 175.90s
834.83% realtime
22.99MHz needed for realtime

pegase_l1_448.mp1
175908 of 175908
Decode time - 20.53s
File duration - 175.90s
856.79% realtime
22.40MHz needed for realtime

pegase_l2_384.mp2
175897 of 175908
Decode time - 20.57s
File duration - 175.90s
855.12% realtime
22.45MHz needed for realtime

true_audio.tta
175000 of 175000
Decode time - 32.59s
File duration - 175.00s
536.97% realtime
35.75MHz needed for realtime

vorbis_500.ogg
175906 of 175906
Decode time - 29.16s
File duration - 175.90s
603.22% realtime
31.82MHz needed for realtime

vorbis_350.ogg
175906 of 175906
Decode time - 25.20s
File duration - 175.90s
698.01% realtime
27.50MHz needed for realtime

vorbis_096.ogg
175906 of 175906
Decode time - 18.22s
File duration - 175.90s
965.42% realtime
19.88MHz needed for realtime

vorbis_128.ogg
175906 of 175906
Decode time - 18.70s
File duration - 175.90s
940.64% realtime
20.41MHz needed for realtime

vorbis_192.ogg
175906 of 175906
Decode time - 20.51s
File duration - 175.90s
857.63% realtime
22.38MHz needed for realtime

vorbis_256.ogg
175906 of 175906
Decode time - 22.71s
File duration - 175.90s
774.54% realtime
24.78MHz needed for realtime

wmapro_271k.wma
174248 of 178941
Decode time - 23.57s
File duration - 178.94s
759.18% realtime
25.29MHz needed for realtime

wmapro_55k.wma
174248 of 178941
Decode time - 19.01s
File duration - 178.94s
941.29% realtime
20.39MHz needed for realtime

wmapro_80k.wma
174248 of 178941
Decode time - 19.84s
File duration - 178.94s
901.91% realtime
21.28MHz needed for realtime

wmapro_141k.wma
174248 of 178941
Decode time - 21.19s
File duration - 178.94s
844.45% realtime
22.73MHz needed for realtime

wmapro_173k.wma
174248 of 178941
Decode time - 21.83s
File duration - 178.94s
819.69% realtime
23.42MHz needed for realtime

wma_128.wma
174294 of 177504
Decode time - 16.36s
File duration - 177.50s
1084.96% realtime
17.69MHz needed for realtime

wma_192.wma
174294 of 177504
Decode time - 17.05s
File duration - 177.50s
1041.05% realtime
18.44MHz needed for realtime

wma_256.wma
174294 of 177504
Decode time - 17.70s
File duration - 177.50s
1002.82% realtime
19.14MHz needed for realtime

wma_320.wma
174294 of 177504
Decode time - 18.29s
File duration - 177.50s
970.47% realtime
19.78MHz needed for realtime

wma_96.wma
174294 of 177504
Decode time - 16.00s
File duration - 177.50s
1109.37% realtime
17.30MHz needed for realtime

wv_fastx3.wv
175900 of 175906
Decode time - 21.09s
File duration - 175.90s
834.04% realtime
23.02MHz needed for realtime

wv_normx4.wv
175900 of 175906
Decode time - 25.29s
File duration - 175.90s
695.53% realtime
27.60MHz needed for realtime