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-rw-r--r--board/pandora/pandora.c9
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;