diff options
author | Otavio Salvador <otavio@ossystems.com.br> | 2015-07-23 11:02:28 -0300 |
---|---|---|
committer | Stefano Babic <sbabic@denx.de> | 2015-07-26 12:29:13 +0200 |
commit | 4c9929d63a51596db51c77620390b7b85feb8ecd (patch) | |
tree | 64ee2c09f8f0f9f70b1fc4ce81dcb3eb0b026db4 /board | |
parent | 862187b7cd7b9f7477d41532bc907b792455eb0d (diff) |
cgtqmx6eval: Add PMIC support
cgtqmx6eval has a PFUZE100 FSL PMIC connected to I2C2.
Add support for it.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Diffstat (limited to 'board')
-rw-r--r-- | board/congatec/cgtqmx6eval/cgtqmx6eval.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/board/congatec/cgtqmx6eval/cgtqmx6eval.c b/board/congatec/cgtqmx6eval/cgtqmx6eval.c index e05060c4b78..b0ca69baf17 100644 --- a/board/congatec/cgtqmx6eval/cgtqmx6eval.c +++ b/board/congatec/cgtqmx6eval/cgtqmx6eval.c @@ -16,8 +16,12 @@ #include <asm/gpio.h> #include <asm/imx-common/iomux-v3.h> #include <asm/imx-common/boot_mode.h> +#include <asm/imx-common/mxc_i2c.h> #include <mmc.h> #include <fsl_esdhc.h> +#include <i2c.h> +#include <power/pmic.h> +#include <power/pfuze100_pmic.h> DECLARE_GLOBAL_DATA_PTR; @@ -27,6 +31,13 @@ DECLARE_GLOBAL_DATA_PTR; #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW |\ PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | 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 MX6Q_QMX6_PFUZE_MUX IMX_GPIO_NR(6, 9) + int dram_init(void) { gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); @@ -77,6 +88,78 @@ static iomux_v3_cfg_t const usdhc4_pads[] = { MX6_PAD_NANDF_D6__GPIO2_IO06 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */ }; +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) +struct i2c_pads_info i2c_pad_info1 = { + .scl = { + .i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC, + .gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC, + .gp = IMX_GPIO_NR(4, 12) + }, + .sda = { + .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC, + .gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC, + .gp = IMX_GPIO_NR(4, 13) + } +}; + +#define I2C_PMIC 1 /* I2C2 port is used to connect to the PMIC */ + +struct interface_level { + char *name; + uchar value; +}; + +static struct interface_level mipi_levels[] = { + {"0V0", 0x00}, + {"2V5", 0x17}, +}; + +/* setup board specific PMIC */ +int power_init_board(void) +{ + struct pmic *p; + u32 id1, id2, i; + int ret; + char const *lv_mipi; + + /* configure I2C multiplexer */ + gpio_direction_output(MX6Q_QMX6_PFUZE_MUX, 1); + + power_pfuze100_init(I2C_PMIC); + p = pmic_get("PFUZE100"); + if (!p) + return -EINVAL; + + ret = pmic_probe(p); + if (ret) + return ret; + + pmic_reg_read(p, PFUZE100_DEVICEID, &id1); + pmic_reg_read(p, PFUZE100_REVID, &id2); + printf("PFUZE100 Rev. [%02x/%02x] detected\n", id1, id2); + + if (id2 >= 0x20) + return 0; + + /* set level of MIPI if specified */ + lv_mipi = getenv("lv_mipi"); + if (lv_mipi) + return 0; + + for (i = 0; i < ARRAY_SIZE(mipi_levels); i++) { + if (!strcmp(mipi_levels[i].name, lv_mipi)) { + printf("set MIPI level %s\n", + mipi_levels[i].name); + ret = pmic_reg_write(p, PFUZE100_VGEN4VOL, + mipi_levels[i].value); + if (ret) + return ret; + } + } + + return 0; +} + static void setup_iomux_uart(void) { imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads)); @@ -148,6 +231,8 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); + return 0; } |