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| author | Lily Zhang <r58066@freescale.com> | 2010-11-16 14:58:20 +0800 |
|---|---|---|
| committer | Lily Zhang <r58066@freescale.com> | 2010-11-17 10:54:17 +0800 |
| commit | 5c13c889739565b7a0409048ef4ac3eaedf3ff09 (patch) | |
| tree | 73ede06e4bc131a5a15f4118e1b50d70fde532c4 /board/freescale | |
| parent | a649f3032601d263899a97150c1e7f4fa09b2d19 (diff) | |
| download | u-boot-imx-5c13c889739565b7a0409048ef4ac3eaedf3ff09.zip u-boot-imx-5c13c889739565b7a0409048ef4ac3eaedf3ff09.tar.gz u-boot-imx-5c13c889739565b7a0409048ef4ac3eaedf3ff09.tar.bz2 | |
ENGR00133689 MX51: set MC13892 charge output voltage as 4.2V
This patch is to set MC13892 charge regulator output voltage
as 4.2V. It fixes a typo error for chip check and makes TO3
VCC and VDDA voltages keep sync with the spec.
Signed-off-by: Lily Zhang <r58066@freescale.com>
Diffstat (limited to 'board/freescale')
| -rw-r--r-- | board/freescale/mx51_bbg/mx51_bbg.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/board/freescale/mx51_bbg/mx51_bbg.c b/board/freescale/mx51_bbg/mx51_bbg.c index e0fe6bd..8cc5ee7 100644 --- a/board/freescale/mx51_bbg/mx51_bbg.c +++ b/board/freescale/mx51_bbg/mx51_bbg.c @@ -153,6 +153,11 @@ inline int is_soc_rev(int rev) return (system_rev & 0xFF) - rev; } +static int is_board_rev(int rev) +{ + return (((system_rev & 0x0F00) >> 8) == rev) ? 1 : 0; +} + #ifdef CONFIG_ARCH_MMU void board_mmu_init(void) { @@ -588,13 +593,25 @@ static void setup_core_voltage_spi(void) val &= ~0x10000; pmic_reg(slave, 34, val, 1); - /* Write needed to update Charger 0 */ - pmic_reg(slave, 48, 0x0023807f, 1); + /* For BBG2.5 and BBG3.0, set SPI register 48 = 0x21807B + * and disable the PLIM. + * MC13892 has an inside charge timer which expires in 120 minutes. + * If ICHRG and CHGAUTOB are not set properly, this timer expiration + * will get system power recycled. + * Since BBG has no Li-Ion battery on board, sets + * ICHRG in externally powered mode and sets CHGAUTOB bit to avoid + * automatic charging, so that system will not get reset by this + * timer expiration. + * Set the charge regulator output voltage as 4.2V by default + * according to MC13892 spec + */ + if (is_board_rev(BOARD_REV_2_0)) + pmic_reg(slave, 48, 0x0023807B, 1); /* power up the system first */ pmic_reg(slave, 34, 0x00200000, 1); - if (is_soc_rev(CHIP_REV_2_0) >= 0) { + if (is_soc_rev(CHIP_REV_2_0) <= 0) { /* Set core voltage to 1.1V */ val = pmic_reg(slave, 24, 0, 0); val = (val & (~0x1f)) | 0x14; |