diff options
Diffstat (limited to 'board/freescale/mx6slevk')
| -rw-r--r-- | board/freescale/mx6slevk/mx6slevk.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c index aadad32..aeb418b 100644 --- a/board/freescale/mx6slevk/mx6slevk.c +++ b/board/freescale/mx6slevk/mx6slevk.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2013 Freescale Semiconductor, Inc. + * Copyright (C) 2013-2014 Freescale Semiconductor, Inc. * * Author: Fabio Estevam <fabio.estevam@freescale.com> * @@ -19,6 +19,10 @@ #include <fsl_esdhc.h> #include <mmc.h> #include <netdev.h> +#ifdef CONFIG_SYS_I2C_MXC +#include <i2c.h> +#include <asm/imx-common/mxc_i2c.h> +#endif DECLARE_GLOBAL_DATA_PTR; @@ -128,6 +132,41 @@ static int setup_fec(void) } #endif +#ifdef CONFIG_LDO_BYPASS_CHECK +void ldo_mode_set(int ldo_bypass) +{ + unsigned char value; + /* swith to ldo_bypass mode */ + if (ldo_bypass) { + /* decrease VDDARM to 1.15V */ + if (i2c_read(0x8, 0x20, 1, &value, 1)) { + printf("Read SW1AB error!\n"); + return; + } + value &= ~0x3f; + value |= 0x22; + if (i2c_write(0x8, 0x20, 1, &value, 1)) { + printf("Set SW1AB error!\n"); + return; + } + /* increase VDDSOC to 1.15V */ + if (i2c_read(0x8, 0x2e, 1, &value, 1)) { + printf("Read SW1C error!\n"); + return; + } + value &= ~0x3f; + value |= 0x22; + if (i2c_write(0x8, 0x2e, 1, &value, 1)) { + printf("Set SW1C error!\n"); + return; + } + + set_anatop_bypass(); + printf("switch to ldo_bypass mode!\n"); + } + +} +#endif int board_early_init_f(void) { |