Implement power_init_board and related I2C interface configuration.
After adding this, uboot can successfully detect and configure pmic.
" U-Boot 2015.01-rc4-00110-g5697113-dirty (Jan 08 2015 - 21:06:44)
CPU: Freescale i.MX6SL rev1.0 at 396 MHz Reset cause: POR Board: MX6SLEVK I2C: ready DRAM: 1 GiB PMIC: PFUZE100 ID=0x10 MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 "
Signed-off-by: Peng Fan Peng.Fan@freescale.com --- board/freescale/mx6slevk/mx6slevk.c | 47 +++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+)
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c index 838ea6c..f74b237 100644 --- a/board/freescale/mx6slevk/mx6slevk.c +++ b/board/freescale/mx6slevk/mx6slevk.c @@ -13,13 +13,18 @@ #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/imx-common/spi.h> #include <asm/io.h> #include <linux/sizes.h> #include <common.h> #include <fsl_esdhc.h> +#include <i2c.h> #include <mmc.h> #include <netdev.h> +#include <power/pmic.h> +#include <power/pfuze100_pmic.h> +#include "../common/pfuze.h" #include <usb.h> #include <usb/ehci-fsl.h>
@@ -40,6 +45,11 @@ DECLARE_GLOBAL_DATA_PTR; #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \ PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
+#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 ETH_PHY_RESET IMX_GPIO_NR(4, 21)
int dram_init(void) @@ -221,6 +231,39 @@ int board_mmc_init(bd_t *bis) return 0; }
+#ifdef CONFIG_SYS_I2C_MXC +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) +/* I2C1 for PMIC */ +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; + unsigned int ret; + + p = pfuze_common_init(I2C_PMIC); + if (!p) + return -ENODEV; + + ret = pfuze_mode_init(p, APS_PFM); + if (ret < 0) + return -EIO; + + return 0; +} +#endif + #ifdef CONFIG_FEC_MXC int board_eth_init(bd_t *bis) { @@ -297,6 +340,10 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+#ifdef CONFIG_SYS_I2C_MXC + setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); +#endif + #ifdef CONFIG_FEC_MXC setup_fec(); #endif