diff options
| -rw-r--r-- | arch/arm/include/asm/arch-mx6/mx6sl_pins.h | 5 | ||||
| -rw-r--r-- | board/freescale/mx6slevk/mx6slevk.c | 101 |
2 files changed, 106 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h index 4964d69..70507d8 100644 --- a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h +++ b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h @@ -53,6 +53,11 @@ enum { MX6_PAD_FEC_RX_ER__GPIO_4_19 = IOMUX_PAD(0x0428, 0x0138, 5, 0x0000, 0, 0), MX6_PAD_FEC_TX_CLK__GPIO_4_21 = IOMUX_PAD(0x0434, 0x0144, 5, 0x0000, 0, 0), + MX6_PAD_I2C1_SDA__I2C1_SDA = IOMUX_PAD(0x0450, 0x0160, 0x10, 0x0720, 2, 0), + MX6_PAD_I2C1_SDA__GPIO_3_13 = IOMUX_PAD(0x0450, 0x0160, 5, 0x0000, 0, 0), + MX6_PAD_I2C1_SCL__I2C1_SCL = IOMUX_PAD(0x044C, 0x015C, 0x10, 0x071C, 2, 0), + MX6_PAD_I2C1_SCL__GPIO_3_12 = IOMUX_PAD(0x044C, 0x015C, 5, 0x0000, 0, 0), + MX6_PAD_EPDC_PWRSTAT__GPIO_2_13 = IOMUX_PAD(0x03E8, 0x00F8, 5, 0x0000, 0, 0), MX6_PAD_EPDC_VCOM0__GPIO_2_3 = IOMUX_PAD(0x0410, 0x0120, 5, 0x0000, 0, 0), MX6_PAD_EPDC_PWRWAKEUP__GPIO_2_14 = IOMUX_PAD(0x03EC, 0x00FC, 5, 0x0000, 0, 0), diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c index 7ddd553..ac0b1f3 100644 --- a/board/freescale/mx6slevk/mx6slevk.c +++ b/board/freescale/mx6slevk/mx6slevk.c @@ -42,11 +42,33 @@ DECLARE_GLOBAL_DATA_PTR; PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ PAD_CTL_DSE_40ohm | PAD_CTL_HYS) +#define I2C_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ + PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \ + PAD_CTL_ODE | PAD_CTL_SRE_FAST) + #define EPDC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_SPEED_MED | \ PAD_CTL_DSE_40ohm | PAD_CTL_HYS) #define ETH_PHY_RESET IMX_GPIO_NR(4, 21) +#ifdef CONFIG_SYS_I2C_MXC +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) +/* I2C1 for PMIC */ +struct i2c_pads_info i2c_pad_info0 = { + .scl = { + .i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC, + .gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC, + .gp = IMX_GPIO_NR(3, 13), + }, + .sda = { + .i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC, + .gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC, + .gp = IMX_GPIO_NR(3, 12), + }, +}; +#endif + int dram_init(void) { gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); @@ -563,6 +585,75 @@ static int setup_fec(void) } #endif +#ifdef CONFIG_SYS_I2C_MXC +static int setup_pmic_voltages(void) +{ + unsigned char value, rev_id = 0; + + i2c_set_bus_num(0); + if (!i2c_probe(0x8)) { + if (i2c_read(0x8, 0, 1, &value, 1)) { + printf("Read device ID error!\n"); + return -1; + } + if (i2c_read(0x8, 3, 1, &rev_id, 1)) { + printf("Read Rev ID error!\n"); + return -1; + } + printf("Found PFUZE100! deviceid=%x,revid=%x\n", value, rev_id); + + /* set SW1AB staby volatage 0.975V */ + if (i2c_read(0x8, 0x21, 1, &value, 1)) { + printf("Read SW1ABSTBY error!\n"); + return -1; + } + value &= ~0x3f; + value |= 0x1b; + if (i2c_write(0x8, 0x21, 1, &value, 1)) { + printf("Set SW1ABSTBY error!\n"); + return -1; + } + + /* set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */ + if (i2c_read(0x8, 0x24, 1, &value, 1)) { + printf("Read SW1ABCONFIG error!\n"); + return -1; + } + value &= ~0xc0; + value |= 0x40; + if (i2c_write(0x8, 0x24, 1, &value, 1)) { + printf("Set SW1ABCONFIG error!\n"); + return -1; + } + + /* set SW1C staby volatage 0.975V */ + if (i2c_read(0x8, 0x2f, 1, &value, 1)) { + printf("Read SW1CSTBY error!\n"); + return -1; + } + value &= ~0x3f; + value |= 0x1b; + if (i2c_write(0x8, 0x2f, 1, &value, 1)) { + printf("Set SW1CSTBY error!\n"); + return -1; + } + + /* set SW1C/VDDSOC step ramp up time to from 16us to 4us/25mV */ + if (i2c_read(0x8, 0x32, 1, &value, 1)) { + printf("Read SW1CCONFIG error!\n"); + return -1; + } + value &= ~0xc0; + value |= 0x40; + if (i2c_write(0x8, 0x32, 1, &value, 1)) { + printf("Set SW1CCONFIG error!\n"); + return -1; + } + } + + return 0; +} + #ifdef CONFIG_LDO_BYPASS_CHECK void ldo_mode_set(int ldo_bypass) { @@ -598,6 +689,7 @@ void ldo_mode_set(int ldo_bypass) } #endif +#endif int board_early_init_f(void) { @@ -622,6 +714,15 @@ int board_init(void) int board_late_init(void) { + int ret = 0; + +#ifdef CONFIG_SYS_I2C_MXC + setup_i2c(0, CONFIG_SYS_I2C_SPEED, + CONFIG_SYS_I2C_SLAVE, &i2c_pad_info0); + ret = setup_pmic_voltages(); + if (ret) + return -1; +#endif #ifdef CONFIG_ENV_IS_IN_MMC board_late_mmc_env_init(); |