pico-imx6ul: Add PMIC support

Add PMIC support. Tested by command "pmic PFUZE3000 dump".

Signed-off-by: Vanessa Maegima <vanessa.maegima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>

diff --git a/board/technexion/pico-imx6ul/pico-imx6ul.c b/board/technexion/pico-imx6ul/pico-imx6ul.c
index b0b8f05..5cbf803 100644 (file)
--- a/board/technexion/pico-imx6ul/pico-imx6ul.c
+++ b/board/technexion/pico-imx6ul/pico-imx6ul.c
@@ -14,13 +14,18 @@
 #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/io.h>
 #include <common.h>
 #include <miiphy.h>
 #include <netdev.h>
 #include <fsl_esdhc.h>
+#include <i2c.h>
 #include <linux/sizes.h>
 #include <usb.h>
+#include <power/pmic.h>
+#include <power/pfuze3000_pmic.h>
+#include "../../freescale/common/pfuze.h"
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -32,6 +37,11 @@ DECLARE_GLOBAL_DATA_PTR;
        PAD_CTL_PUS_22K_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)
+
 #define OTG_ID_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |           \
        PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_LOW |               \
        PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
@@ -47,6 +57,23 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define RMII_PHY_RESET IMX_GPIO_NR(1, 28)
 
+#ifdef CONFIG_SYS_I2C_MXC
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+/* I2C2 for PMIC */
+struct i2c_pads_info i2c_pad_info1 = {
+       .scl = {
+               .i2c_mode =  MX6_PAD_GPIO1_IO02__I2C1_SCL | PC,
+               .gpio_mode = MX6_PAD_GPIO1_IO02__GPIO1_IO02 | PC,
+               .gp = IMX_GPIO_NR(1, 2),
+       },
+       .sda = {
+               .i2c_mode = MX6_PAD_GPIO1_IO03__I2C1_SDA | PC,
+               .gpio_mode = MX6_PAD_GPIO1_IO03__GPIO1_IO03 | PC,
+               .gp = IMX_GPIO_NR(1, 3),
+       },
+};
+#endif
+
 static iomux_v3_cfg_t const fec_pads[] = {
        MX6_PAD_ENET1_TX_EN__ENET2_MDC          | MUX_PAD_CTRL(MDIO_PAD_CTRL),
        MX6_PAD_ENET1_TX_DATA1__ENET2_MDIO      | MUX_PAD_CTRL(MDIO_PAD_CTRL),
@@ -182,6 +209,45 @@ int board_early_init_f(void)
        return 0;
 }
 
+#ifdef CONFIG_POWER
+#define I2C_PMIC       0
+static struct pmic *pfuze;
+int power_init_board(void)
+{
+       int ret;
+       unsigned int reg, rev_id;
+
+       ret = power_pfuze3000_init(I2C_PMIC);
+       if (ret)
+               return ret;
+
+       pfuze = pmic_get("PFUZE3000");
+       ret = pmic_probe(pfuze);
+       if (ret)
+               return ret;
+
+       pmic_reg_read(pfuze, PFUZE3000_DEVICEID, &reg);
+       pmic_reg_read(pfuze, PFUZE3000_REVID, &rev_id);
+       printf("PMIC: PFUZE3000 DEV_ID=0x%x REV_ID=0x%x\n", reg, rev_id);
+
+       /* disable Low Power Mode during standby mode */
+       pmic_reg_read(pfuze, PFUZE3000_LDOGCTL, &reg);
+       reg |= 0x1;
+       pmic_reg_write(pfuze, PFUZE3000_LDOGCTL, reg);
+
+       /* SW1B step ramp up time from 2us to 4us/25mV */
+       pmic_reg_write(pfuze, PFUZE3000_SW1BCONF, 0x40);
+
+       /* SW1B mode to APS/PFM */
+       pmic_reg_write(pfuze, PFUZE3000_SW1BMODE, 0xc);
+
+       /* SW1B standby voltage set to 0.975V */
+       pmic_reg_write(pfuze, PFUZE3000_SW1BSTBY, 0xb);
+
+       return 0;
+}
+#endif
+
 int board_usb_phy_mode(int port)
 {
        if (port == 1)
@@ -211,6 +277,10 @@ 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
+
        setup_fec();
        setup_usb();
 

diff --git a/include/configs/pico-imx6ul.h b/include/configs/pico-imx6ul.h
index f9fc263..a1e5f01 100644 (file)
--- a/include/configs/pico-imx6ul.h
+++ b/include/configs/pico-imx6ul.h
@@ -158,6 +158,18 @@
 #define CONFIG_SYS_INIT_SP_ADDR \
        (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
 
+/* I2C configs */
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_I2C_MXC_I2C1
+#define CONFIG_SYS_I2C_SPEED           100000
+
+/* PMIC */
+#define CONFIG_POWER
+#define CONFIG_POWER_I2C
+#define CONFIG_POWER_PFUZE3000
+#define CONFIG_POWER_PFUZE3000_I2C_ADDR        0x08
+
 /* FLASH and environment organization */
 #define CONFIG_SYS_NO_FLASH