From: Fabio Estevam fabio.estevam@freescale.com
Warp has a MAX77696 PMIC connected via I2C1 bus.
Add support for it.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- board/warp/warp.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/configs/warp.h | 11 +++++++++++ 2 files changed, 61 insertions(+)
diff --git a/board/warp/warp.c b/board/warp/warp.c index 21ac5e7..49dfdb6 100644 --- a/board/warp/warp.c +++ b/board/warp/warp.c @@ -15,13 +15,17 @@ #include <asm/arch/sys_proto.h> #include <asm/gpio.h> #include <asm/imx-common/iomux-v3.h> +#include <asm/imx-common/mxc_i2c.h> #include <asm/io.h> #include <linux/sizes.h> #include <common.h> #include <watchdog.h> #include <fsl_esdhc.h> +#include <i2c.h> #include <mmc.h> #include <usb.h> +#include <power/pmic.h> +#include <power/max77696_pmic.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -35,6 +39,11 @@ DECLARE_GLOBAL_DATA_PTR; PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ PAD_CTL_LVE)
+#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) + int dram_init(void) { gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); @@ -88,6 +97,45 @@ int board_usb_phy_mode(int port) return USB_INIT_DEVICE; }
+/* I2C1 for PMIC */ +#define I2C_PMIC 0 +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) +struct i2c_pads_info i2c_pad_info1 = { + .sda = { + .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), + }, + .scl = { + .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), + }, +}; + +int power_init_board(void) +{ + struct pmic *p; + int ret; + unsigned int reg; + + ret = power_max77696_init(I2C_PMIC); + if (ret) + return ret; + + p = pmic_get("MAX77696"); + if (!p) + return -EINVAL; + + ret = pmic_reg_read(p, CID, ®); + if (ret) + return ret; + + printf("PMIC: MAX77696 detected, rev=0x%x\n", reg); + + return pmic_probe(p); +} + int board_early_init_f(void) { setup_iomux_uart(); @@ -99,6 +147,8 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+ setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); + return 0; }
diff --git a/include/configs/warp.h b/include/configs/warp.h index 48e2058..f38f781 100644 --- a/include/configs/warp.h +++ b/include/configs/warp.h @@ -98,6 +98,17 @@ #define CONFIG_CMD_FUSE #define CONFIG_MXC_OCOTP
+/* I2C Configs */ +#define CONFIG_CMD_I2C +#define CONFIG_SYS_I2C +#define CONFIG_SYS_I2C_MXC +#define CONFIG_SYS_I2C_SPEED 100000 + +/* PMIC */ +#define CONFIG_POWER +#define CONFIG_POWER_I2C +#define CONFIG_POWER_MAX77696 + #define CONFIG_EXTRA_ENV_SETTINGS \ "script=boot.scr\0" \ "image=zImage\0" \