udoo_neo: Add PFUZE300 PMIC support

UDOO Neo boards has a PFUZE300 connected to I2C1 bus.

Tested on a UDOO Neo Full with "pmic PFUZE3000 dump" command.

Signed-off-by: Breno Lima <breno.lima@nxp.com>

board/udoo/neo/neo.c

@@ -19,10 +19,14 @@
 #include <fsl_esdhc.h>
 #include <asm/arch/crm_regs.h>
 #include <asm/io.h>
+#include <asm/imx-common/mxc_i2c.h>
 #include <asm/arch/sys_proto.h>
 #include <spl.h>
 #include <linux/sizes.h>
 #include <common.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/pfuze3000_pmic.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -41,6 +45,11 @@ enum {
 	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 WDOG_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_PKE | PAD_CTL_SPEED_MED |	\
 	PAD_CTL_DSE_40ohm)
 
@@ -56,6 +65,136 @@ int dram_init(void)
 	return 0;
 }
 
+#ifdef CONFIG_SYS_I2C_MXC
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+/* I2C1 for PMIC */
+static struct i2c_pads_info i2c_pad_info1 = {
+	.scl = {
+		.i2c_mode = MX6_PAD_GPIO1_IO00__I2C1_SCL | PC,
+		.gpio_mode = MX6_PAD_GPIO1_IO00__GPIO1_IO_0 | PC,
+		.gp = IMX_GPIO_NR(1, 0),
+	},
+	.sda = {
+		.i2c_mode = MX6_PAD_GPIO1_IO01__I2C1_SDA | PC,
+		.gpio_mode = MX6_PAD_GPIO1_IO01__GPIO1_IO_1 | PC,
+		.gp = IMX_GPIO_NR(1, 1),
+	},
+};
+#endif
+
+#ifdef CONFIG_POWER
+int power_init_board(void)
+{
+	struct pmic *p;
+	int ret;
+	unsigned int reg, rev_id;
+
+	ret = power_pfuze3000_init(PFUZE3000_I2C_BUS);
+	if (ret)
+		return ret;
+
+	p = pmic_get("PFUZE3000");
+	ret = pmic_probe(p);
+	if (ret)
+		return ret;
+
+	pmic_reg_read(p, PFUZE3000_DEVICEID, &reg);
+	pmic_reg_read(p, 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(p, PFUZE3000_LDOGCTL, &reg);
+	reg |= 0x1;
+	ret = pmic_reg_write(p, PFUZE3000_LDOGCTL, reg);
+	if (ret)
+		return ret;
+
+	ret = pmic_reg_write(p, PFUZE3000_SW1AMODE, 0xc);
+	if (ret)
+		return ret;
+
+	ret = pmic_reg_write(p, PFUZE3000_SW1BMODE, 0xc);
+	if (ret)
+		return ret;
+
+	ret = pmic_reg_write(p, PFUZE3000_SW2MODE, 0xc);
+	if (ret)
+		return ret;
+
+	ret = pmic_reg_write(p, PFUZE3000_SW3MODE, 0xc);
+	if (ret)
+		return ret;
+
+	/* set SW1A standby voltage 0.975V */
+	pmic_reg_read(p, PFUZE3000_SW1ASTBY, &reg);
+	reg &= ~0x3f;
+	reg |= PFUZE3000_SW1AB_SETP(9750);
+	ret = pmic_reg_write(p, PFUZE3000_SW1ASTBY, reg);
+	if (ret)
+		return ret;
+
+	/* set SW1B standby voltage 0.975V */
+	pmic_reg_read(p, PFUZE3000_SW1BSTBY, &reg);
+	reg &= ~0x3f;
+	reg |= PFUZE3000_SW1AB_SETP(9750);
+	ret = pmic_reg_write(p, PFUZE3000_SW1BSTBY, reg);
+	if (ret)
+		return ret;
+
+	/* set SW1A/VDD_ARM_IN step ramp up time from 16us to 4us/25mV */
+	pmic_reg_read(p, PFUZE3000_SW1ACONF, &reg);
+	reg &= ~0xc0;
+	reg |= 0x40;
+	ret = pmic_reg_write(p, PFUZE3000_SW1ACONF, reg);
+	if (ret)
+		return ret;
+
+	/* set SW1B/VDD_SOC_IN step ramp up time from 16us to 4us/25mV */
+	pmic_reg_read(p, PFUZE3000_SW1BCONF, &reg);
+	reg &= ~0xc0;
+	reg |= 0x40;
+	ret = pmic_reg_write(p, PFUZE3000_SW1BCONF, reg);
+	if (ret)
+		return ret;
+
+	/* set VDD_ARM_IN to 1.350V */
+	pmic_reg_read(p, PFUZE3000_SW1AVOLT, &reg);
+	reg &= ~0x3f;
+	reg |= PFUZE3000_SW1AB_SETP(13500);
+	ret = pmic_reg_write(p, PFUZE3000_SW1AVOLT, reg);
+	if (ret)
+		return ret;
+
+	/* set VDD_SOC_IN to 1.350V */
+	pmic_reg_read(p, PFUZE3000_SW1BVOLT, &reg);
+	reg &= ~0x3f;
+	reg |= PFUZE3000_SW1AB_SETP(13500);
+	ret = pmic_reg_write(p, PFUZE3000_SW1BVOLT, reg);
+	if (ret)
+		return ret;
+
+	/* set DDR_1_5V to 1.350V */
+	pmic_reg_read(p, PFUZE3000_SW3VOLT, &reg);
+	reg &= ~0x0f;
+	reg |= PFUZE3000_SW3_SETP(13500);
+	ret = pmic_reg_write(p, PFUZE3000_SW3VOLT, reg);
+	if (ret)
+		return ret;
+
+	/* set VGEN2_1V5 to 1.5V */
+	pmic_reg_read(p, PFUZE3000_VLDO2CTL, &reg);
+	reg &= ~0x0f;
+	reg |= PFUZE3000_VLDO_SETP(15000);
+	/*  enable  */
+	reg |= 0x10;
+	ret = pmic_reg_write(p, PFUZE3000_VLDO2CTL, reg);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+#endif
+
 static iomux_v3_cfg_t const uart1_pads[] = {
 	MX6_PAD_GPIO1_IO04__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
 	MX6_PAD_GPIO1_IO05__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
@@ -115,6 +254,10 @@ int board_init(void)
 	/* Active high for ncp692 */
 	gpio_direction_output(IMX_GPIO_NR(4, 16) , 1);
 
+	#ifdef CONFIG_SYS_I2C_MXC
+	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+	#endif
+
 	return 0;
 }
 

include/configs/udoo_neo.h

@@ -90,4 +90,17 @@
 
 #define CONFIG_IMX_THERMAL
 
+/* 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
+#define PFUZE3000_I2C_BUS	0
+
 #endif				/* __CONFIG_H */