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author | William Wilgus <me.theuser@yahoo.com> | 2018-07-27 23:56:32 +0200 |
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committer | William Wilgus <me.theuser@yahoo.com> | 2018-07-27 23:56:32 +0200 |
commit | 6f0320a9535bc1aa81d83fa879ac14d5ee603658 (patch) | |
tree | 3b12fc361595ecd2249f391e114036cb30150105 /manual/configure_rockbox/system_options.tex | |
parent | 400603abdfb4ba7566e0cae8dbed9268f06716dc (diff) | |
download | rockbox-6f0320a9535bc1aa81d83fa879ac14d5ee603658.tar.gz rockbox-6f0320a9535bc1aa81d83fa879ac14d5ee603658.zip |
As3525 v1/v2 Add power savings menu
Allow user to select cpu undervolt
There have been quite a few issues across the SANSA AMS line related
to CPU undervolting while most players show greatly increased runtime
some crash.
Rather than constanly upping the voltage we now have a
setting with a safe value for all players and the option for lower voltages
I plan to add a few other options here later such as disk
timings and maybe some other clocks/experimental settings
Added: Disk Low speed option for AS3525v2 devices cuts
frequency to 12 MHz from 24 MHz
Added: Disk Low speed option for AS3525v1 devices cuts
frequency to 15.5 MHz from 31 MHz
Added: I2c Low Speed AS3525 devices, should be bigger improvement for v1 devices
Fixed: Debug menu for AS3525v2 No SDSLOT frequency,
Showed IDE freq though it is unused
Added: DBOP and SSP underclocking affects display on v1/v2 respectively
Fixed: debug menu now has SSP frequency, and SSP_CPSR
Update: made settings menu more generic
Update: cleaned up code
Added: Clip v1 & Fuze v1 didn't have HAVE_ADJUSTABLE_CPU_VOLTAGE.
not sure why but, waiting on testing to confirm
Added: C200v2 and E200v2 devices and HAVE_ADJUSTABLE_CPU_VOLTAGE.
Fixed: v1 devices don't like display timing set lower (dbop)
v1 devices don't have a divider set for ssp (causes divide by 0)
Fixed: ClipZip display lags with Max SSP divider changed from 0xFE to 0x32
Fixed: v1 devices didn't work properly with highspeed sd cards
Added code from http://gerrit.rockbox.org/r/#/c/1704/
Added powersave and IDE interface enable/disable
Added: V2 devices now have powersave enabled on sd interface
Update: cleaned up code, lang defines, added manual entries
Update ssp clock mechanism added calculated ssp divider to clipzip
Update turn display clock off when clip+ turns off display
Fixed: clipzip wrong register for SSP clock
Change-Id: I04137682243be92f0f8d8bf1cfa54fbb1965559b
TODO: add other players?
Diffstat (limited to 'manual/configure_rockbox/system_options.tex')
-rwxr-xr-x | manual/configure_rockbox/system_options.tex | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/manual/configure_rockbox/system_options.tex b/manual/configure_rockbox/system_options.tex index ff2967cec7..b279308e71 100755 --- a/manual/configure_rockbox/system_options.tex +++ b/manual/configure_rockbox/system_options.tex @@ -297,6 +297,30 @@ therefore result in better runtime. \end{description} } %\nopt{HAS_BUTTON_HOLD} +\opt{CONFIG_POWER_SAVING}{ + \subsection{Power Saving} + These options allow users to increase runtime by lowering performance + of select subsystems. Certain options may \emph{not} be applicable to your + \dap{} or may cause undesired operation to your particular use case. + + \emph{WARNING!} While every effort has been made to ensure the safety of these + options, due to manufacturing variance some options may cause unwanted side + effects, cause the \dap{} to crash or (while unlikely) even \emph{destroy} + your \dap{}. \emph{PROCEED WITH CAUTION} + + \begin{description} + + \item[CPU] + Allows lower voltages or cpu speed when enabled. + \item[Disk] + Allows slower disk operations when enabled. + \item[I2C] + Allows slower clocking of I2C device bus when enabled. + \item[Display] + Allows slower screen refresh rates when enabled. + + \end{description} +} %\opt{CONFIG_POWER_SAVING} \opt{usb_hid}{ \subsection{\label{ref:USB_HID}USB HID} |