diff options
| author | Lily Zhang <r58066@freescale.com> | 2011-08-22 14:40:10 +0800 |
|---|---|---|
| committer | Justin Waters <justin.waters@timesys.com> | 2012-09-05 14:57:49 -0400 |
| commit | f1adef130e6c7ceda0baf4819f75577cd5df02b3 (patch) | |
| tree | efb26aaf21f6a97a2e4b7dc0e07cb7f1f0f8d5e8 | |
| parent | fea4a9e056bdf9dfee73274184bae4edb3dede26 (diff) | |
ENGR00151255 mx53 QS: Enable VUSB_2V5
Kernel stops at USB driver initialization if suspending,
resuming and resetting the board.
It's because VUSB_2V5 voltage is disabled after suspend.
Need to re-enable it mannually into U-boot
Signed-off-by: Lily Zhang <r58066@freescale.com>
| -rw-r--r-- | board/freescale/mx53_loco/mx53_loco.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/board/freescale/mx53_loco/mx53_loco.c b/board/freescale/mx53_loco/mx53_loco.c index c88412e9fc..7f6ded0a9a 100644 --- a/board/freescale/mx53_loco/mx53_loco.c +++ b/board/freescale/mx53_loco/mx53_loco.c @@ -702,6 +702,13 @@ int check_recovery_cmd_file(void) } #endif +/* restore VUSB 2V5 active after suspend */ +#define BUCKPERI_RESTORE_SW_STEP (0x55) +/* restore VUSB 2V5 power supply after suspend */ +#define SUPPLY_RESTORE_VPERISW_EN (0x20) +#define DA9052_ID1213_REG (35) +#define DA9052_SUPPLY_REG (60) + int board_late_init(void) { uchar value; @@ -729,6 +736,7 @@ int board_late_init(void) printf("%s:i2c_write:error\n", __func__); return -1; } + /* set up rev #1 for loco/ripley board */ setup_board_rev(1); /* Switch to 1GHZ */ @@ -747,6 +755,13 @@ int board_late_init(void) i2c_read(0x48, 60, 1, &value, 1); value |= 0x1; i2c_write(0x48, 60, 1, &value, 1); + /* restore VUSB_2V5 when reset from suspend state */ + value = BUCKPERI_RESTORE_SW_STEP; + i2c_write(0x48, DA9052_ID1213_REG, 1, &value, 1); + i2c_read(0x48, DA9052_SUPPLY_REG, 1, &value, 1); + value |= SUPPLY_RESTORE_VPERISW_EN; + i2c_write(0x48, DA9052_SUPPLY_REG, 1, &value, 1); + /* set up rev #0 for loco/da9053 board */ setup_board_rev(0); /* Switch to 1GHZ */ |