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| author | Lily Zhang <r58066@freescale.com> | 2012-03-02 18:33:05 +0800 |
|---|---|---|
| committer | Lily Zhang <r58066@freescale.com> | 2012-03-02 19:09:27 +0800 |
| commit | 2706397c1c0da569ee74dbb3d16189ef7702e471 (patch) | |
| tree | be4a8e660466818e60d1a15924f6048fce0417ae /board | |
| parent | 6d9c499ea010283d67727fc5bb84d1e59798e9cc (diff) | |
| download | u-boot-imx-2706397c1c0da569ee74dbb3d16189ef7702e471.zip u-boot-imx-2706397c1c0da569ee74dbb3d16189ef7702e471.tar.gz u-boot-imx-2706397c1c0da569ee74dbb3d16189ef7702e471.tar.bz2 | |
ENGR00175981-1 mx53 smd: add CPU 1.2GHz configuration
CONFIG_CPU_1_2G is used to enable 1.2GHz@1.3V. To enable
1.2GHz by default, enable CONFIG_CPU_1_2G into config file.
For example, uncomment CONFIG_CPU_1_2G in mx53_smd.h or
mx53_smd_android.h.
Signed-off-by: Lily Zhang <r58066@freescale.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/mx53_smd/mx53_smd.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/board/freescale/mx53_smd/mx53_smd.c b/board/freescale/mx53_smd/mx53_smd.c index e493ea5..240b596 100644 --- a/board/freescale/mx53_smd/mx53_smd.c +++ b/board/freescale/mx53_smd/mx53_smd.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. + * Copyright (C) 2010-2012 Freescale Semiconductor, Inc. * * See file CREDITS for list of people who contributed to this * project. @@ -827,8 +827,14 @@ void setup_pmic_voltages(void) i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); da9053_i2c_startup_reset(); + +#ifdef CONFIG_CPU_1_2G + /* Increase VDDGP as 1.3V for 1.2GHz */ + value = 0x60; +#else /* increase VDDGP as 1.25V for 1GHZ */ value = 0x5e; +#endif do { if (0 != i2c_write_da9053(0x48, 0x2e, 1, &value, 1)) { printf("da9052_i2c_is_connected - i2c write failed.....\n"); @@ -1425,9 +1431,14 @@ int board_late_init(void) i2c_bus_recovery(); /* Increase VDDGP voltage */ setup_pmic_voltages(); +#ifdef CONFIG_CPU_1_2G + /* Switch to 1.2GHz */ + clk_config(CONFIG_REF_CLK_FREQ, 1200, CPU_CLK); +#else /* Switch to 1GHZ */ clk_config(CONFIG_REF_CLK_FREQ, 1000, CPU_CLK); #endif +#endif return 0; } |