Michael Sevakis
0a7d941fb9
i.MX31: Remove long udelay from DVFS interrupt handler
...
Split the ISR into two parts and alllow quick return from first half.
Introduces a uevent() API to have a callback happen in a specified
number of microseconds. Right now only one event is supported.
Change-Id: Ib1666165be2f6082e5275d64961f083cab104f9f
2013-05-11 21:09:01 -04:00
Michael Sevakis
480c663e5b
i.MX31: Now that it matters because there's a debug screeen that allows changing things while running, some DVFS/DPTC stuff has to be done more carefully. Trim out some stuff and group functions better as well.
...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29122 a1c6a512-1295-4272-9138-f99709370657
2011-01-23 20:21:35 +00:00
Michael Sevakis
0a98e8af9d
i.MX31: Allow interrupts in thread context, not just ISR context, during the lengthy DVFS voltage ramp-up delay. Also, explicitly enable them just before mc13783_init since that does anyway because of the PMIC write inside it.
...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29116 a1c6a512-1295-4272-9138-f99709370657
2011-01-22 21:04:25 +00:00
Michael Sevakis
9d97ee1b54
Gigabeat S/i.MX31: Take care of an interrupt priority inversion that can happen during PCM callback lockout when DVFS switches frequecies during the lockout, preventing a thread from unlocking the callback until DVFS finishes, causing an SSI FIFO underrun. Hadn't thought of an acceptable way to deal with it before.
...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28996 a1c6a512-1295-4272-9138-f99709370657
2011-01-07 20:40:36 +00:00
Michael Sevakis
60f843bf18
Configure Gigabeat S with EABI compiler by default. Implement the INIT section that this enables (due to selective need for long calls). Remove pcm_postinit from INIT section since it's asynchronous. Disable strict aliasing on SPC codec for now just to shut it up.
...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26779 a1c6a512-1295-4272-9138-f99709370657
2010-06-11 14:39:35 +00:00
Michael Sevakis
992b7e10b8
Gigabeat S: There's no compelling reason to start automatic scaling in the bootloader only stop it milliseconds later. Do init to default frequency and working point, however.
...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25839 a1c6a512-1295-4272-9138-f99709370657
2010-05-06 04:17:34 +00:00
Michael Sevakis
11cca264ff
i.MX31/Gigabeat S: Implement frequency and voltage scaling-- 1.6V for 528MHz, and 1.35V for 264MHz and 132MHz. Keep DPTC overdrive ( > 400MHz) voltage scaling off for now because of uncertainties. Simplify the (working) mess later.
...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25699 a1c6a512-1295-4272-9138-f99709370657
2010-04-23 15:32:50 +00:00
Michael Sevakis
7abf2b53a4
Gigabeat S/i.MX31: Sort files in the /target tree into things that are SoC-generic (into /imx31) and player-specific (into /gigabeat-s, based upon current appearances). Move i2s clock init into the appropriate file. Housekeeping only-- no functional changes.
...
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25547 a1c6a512-1295-4272-9138-f99709370657
2010-04-09 01:21:53 +00:00
