diff options
Diffstat (limited to 'board/freescale/mx6sabresd/mx6sabresd.c')
| -rw-r--r-- | board/freescale/mx6sabresd/mx6sabresd.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c index d7d932e..722981e 100644 --- a/board/freescale/mx6sabresd/mx6sabresd.c +++ b/board/freescale/mx6sabresd/mx6sabresd.c @@ -24,6 +24,10 @@ #include <ipu_pixfmt.h> #include <asm/io.h> #include <asm/arch/sys_proto.h> +#ifdef CONFIG_SYS_I2C_MXC +#include <i2c.h> +#include <asm/imx-common/mxc_i2c.h> +#endif DECLARE_GLOBAL_DATA_PTR; #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ @@ -156,6 +160,68 @@ static void setup_iomux_uart(void) imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads)); } +#ifdef CONFIG_LDO_BYPASS_CHECK +void ldo_mode_set(int ldo_bypass) +{ + unsigned char value; + /* increase VDDARM/VDDSOC to support 1.2G chip */ + if (check_1_2G()) { + ldo_bypass = 0; /* ldo_enable on 1.2G chip */ + printf("1.2G chip, increase VDDARM_IN/VDDSOC_IN\n"); + /* increase VDDARM to 1.425V */ + if (i2c_read(0x8, 0x20, 1, &value, 1)) { + printf("Read SW1AB error!\n"); + return; + } + value &= ~0x3f; + value |= 0x2d; + if (i2c_write(0x8, 0x20, 1, &value, 1)) { + printf("Set SW1AB error!\n"); + return; + } + /* increase VDDSOC to 1.425V */ + if (i2c_read(0x8, 0x2e, 1, &value, 1)) { + printf("Read SW1C error!\n"); + return; + } + value &= ~0x3f; + value |= 0x2d; + if (i2c_write(0x8, 0x2e, 1, &value, 1)) { + printf("Set SW1C error!\n"); + return; + } + } + /* switch to ldo_bypass mode , boot on 800Mhz */ + if (ldo_bypass) { + /* decrease VDDARM to 1.175V */ + if (i2c_read(0x8, 0x20, 1, &value, 1)) { + printf("Read SW1AB error!\n"); + return; + } + value &= ~0x3f; + value |= 0x23; + if (i2c_write(0x8, 0x20, 1, &value, 1)) { + printf("Set SW1AB error!\n"); + return; + } + /* increase VDDSOC to 1.175V */ + if (i2c_read(0x8, 0x2e, 1, &value, 1)) { + printf("Read SW1C error!\n"); + return; + } + value &= ~0x3f; + value |= 0x23; + 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 + #ifdef CONFIG_FSL_ESDHC struct fsl_esdhc_cfg usdhc_cfg[3] = { {USDHC2_BASE_ADDR}, @@ -516,3 +582,4 @@ int checkboard(void) puts("Board: MX6-SabreSD\n"); return 0; } + |