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| author | Grazvydas Ignotas <notasas@gmail.com> | 2010-06-08 17:19:22 -0400 |
|---|---|---|
| committer | Sandeep Paulraj <s-paulraj@ti.com> | 2010-06-08 17:19:22 -0400 |
| commit | 5246d01edd8935e04cdf79a5b9a03874509a31b1 (patch) | |
| tree | 98312de0662f38bc64275dff8f24ae9fd44bef28 /board | |
| parent | 23911740486c59851df57521c49bfd81ce1865ec (diff) | |
| download | u-boot-imx-5246d01edd8935e04cdf79a5b9a03874509a31b1.zip u-boot-imx-5246d01edd8935e04cdf79a5b9a03874509a31b1.tar.gz u-boot-imx-5246d01edd8935e04cdf79a5b9a03874509a31b1.tar.bz2 | |
OMAP3: pandora: enable battery backup capacitor
Pandora has a capacitor connected as backup battery, which allows
retaining RTC for some time while main battery is removed. Enable backup
battery charge function to charge that capacitor.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/pandora/pandora.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/board/pandora/pandora.c b/board/pandora/pandora.c index 75e4330..355e9ea 100644 --- a/board/pandora/pandora.c +++ b/board/pandora/pandora.c @@ -37,6 +37,10 @@ #include <asm/mach-types.h> #include "pandora.h" +#define TWL4030_BB_CFG_BBCHEN (1 << 4) +#define TWL4030_BB_CFG_BBSEL_3200MV (3 << 2) +#define TWL4030_BB_CFG_BBISEL_500UA 2 + /* * Routine: board_init * Description: Early hardware init. @@ -78,6 +82,11 @@ int misc_init_r(void) writel(GPIO28, &gpio5_base->setdataout); writel(GPIO4, &gpio6_base->setdataout); + /* Enable battery backup capacitor (3.2V, 0.5mA charge current) */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, + TWL4030_BB_CFG_BBCHEN | TWL4030_BB_CFG_BBSEL_3200MV | + TWL4030_BB_CFG_BBISEL_500UA, TWL4030_PM_RECEIVER_BB_CFG); + dieid_num_r(); return 0; |