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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.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25699 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2010-04-23 15:32:50 +00:00
parent 6cee7579db
commit 11cca264ff
20 changed files with 1311 additions and 125 deletions
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8
firmware/target/arm/imx31/gigabeat-s/power-gigabeat-s.c
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@ -28,6 +28,7 @@
#include "backlight-target.h"
#include "avic-imx31.h"
#include "mc13783.h"
#include "dvfs_dptc-imx31.h"
#if CONFIG_TUNER
#include "fmradio_i2c.h"
#endif
@ -121,6 +122,9 @@ bool tuner_powered(void)
void power_off(void)
{
/* Turn off voltage and frequency scaling */
dvfs_dptc_stop();
/* Cut backlight */
_backlight_off();
@ -131,9 +135,7 @@ void power_off(void)
mc13783_set(MC13783_POWER_CONTROL0, MC13783_USEROFFSPI);
/* Wait for power cut */
disable_interrupt(IRQ_FIQ_STATUS);
while (1);
system_halt();
}
void power_init(void)