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authorJarkko Nikula <jhnikula@gmail.com>2011-05-31 11:27:00 +0300
committerTony Lindgren <tony@atomide.com>2011-06-01 02:25:05 -0700
commit2827411e25d7da7913463474606fe624404b2339 (patch)
tree57c08cb5fa5ab4f1a37ba61cf4305a6e2eed8fdc /arch/arm
parentb1c1df7a7d50bf94de89704e963467bc94b1fef9 (diff)
omap: rx51: Set regulator V28_A always on
The V28_A domain in Nokia N900 that supplies VDD voltages to TLV320AIC34 and TPA6130A2 should not be shutdown. This is because otherwise there will be leak from VIO to VDD in TLV320AIC34 and this leak consumes more battery current that is saved from keeping V28_A off. With this patch the battery current consumption is approximately 1.5 mA lower. Thanks to Kalle Jokiniemi <kalle.jokiniemi@nokia.com> for noticing the issue. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Cc: Kalle Jokiniemi <kalle.jokiniemi@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-omap2/board-rx51-peripherals.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index f6247e71a19..02a65875cfb 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -488,6 +488,7 @@ static struct regulator_init_data rx51_vmmc2 = {
.name = "V28_A",
.min_uV = 2800000,
.max_uV = 3000000,
+ .always_on = true, /* due VIO leak to AIC34 VDDs */
.apply_uV = true,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,