imx:mx6slevk implement power init board

Implement power_init_board and related I2C interface configuration.

After adding this, uboot can successfully detect and configure pmic.

"
U-Boot 2015.01-00281-ge29eddf (Feb 12 2015 - 09:24:01)

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>

diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
index 838ea6c0f0d7713c70e626c2a9bb833b2ac5ede3..c65f72bb158eaad0bbcdacbdb5249c86f19f7058 100644 (file)
--- 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 +231,34 @@ 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;
+
+       p = pfuze_common_init(I2C_PMIC);
+       if (!p)
+               return -ENODEV;
+
+       return pfuze_mode_init(p, APS_PFM);
+}
+#endif
+
 #ifdef CONFIG_FEC_MXC
 int board_eth_init(bd_t *bis)
 {
@@ -297,6 +335,10 @@ 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