[U-Boot] [PATCH 2/2] mx6sxsabresd: Add PFUZE100 PMIC support

Fabio Estevam
2014-07-09T19:13:30Z

From: Fabio Estevam <fabio.estevam@freescale.com>

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
board/freescale/mx6sxsabresd/mx6sxsabresd.c | 84 +++++++++++++++++++++++++++++
include/configs/mx6sxsabresd.h | 13 +++++
2 files changed, 97 insertions(+)

diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index ff4c88f..24d6a51 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -14,10 +14,14 @@
#include <asm/gpio.h>
#include <asm/imx-common/iomux-v3.h>
#include <asm/io.h>
+#include <asm/imx-common/mxc_i2c.h>
#include <linux/sizes.h>
#include <common.h>
#include <fsl_esdhc.h>
#include <mmc.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/pfuze100_pmic.h>

DECLARE_GLOBAL_DATA_PTR;

@@ -29,6 +33,11 @@ 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)
+
int dram_init(void)
{
gd->ram_size = PHYS_SDRAM_SIZE;
@@ -56,9 +65,77 @@ static void setup_iomux_uart(void)
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}

+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+/* I2C1 for PMIC */
+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),
+ },
+};
+
+static int pfuze_init(void)
+{
+ struct pmic *p;
+ int ret;
+ unsigned int reg;
+
+ ret = power_pfuze100_init(I2C_PMIC);
+ if (ret)
+ return ret;
+
+ p = pmic_get("PFUZE100_PMIC");
+ ret = pmic_probe(p);
+ if (ret)
+ return ret;
+
+ pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
+ printf("PMIC: PFUZE100 ID=0x%02x\n", reg);
+
+ /* Set SW1AB standby voltage to 0.975V */
+ pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
+ reg &= ~0x3f;
+ reg |= 0x1b;
+ pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
+
+ /* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
+ pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
+ reg &= ~0xc0;
+ reg |= 0x40;
+ pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
+
+ /* Set SW1C standby voltage to 0.975V */
+ pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
+ reg &= ~0x3f;
+ reg |= 0x1b;
+ pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
+
+ /* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
+ pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
+ reg &= ~0xc0;
+ reg |= 0x40;
+ pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
+
+ /* Enable power of VGEN5 3V3, needed for SD3 */
+ pmic_reg_read(p, PFUZE100_VGEN5VOL, &reg);
+ reg &= ~0x1F;
+ reg |= 0x1F;
+ pmic_reg_write(p, PFUZE100_VGEN5VOL, reg);
+
+ return 0;
+}
+
int board_early_init_f(void)
{
setup_iomux_uart();
+ setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+
return 0;
}

@@ -87,6 +164,13 @@ int board_init(void)
return 0;
}

+int board_late_init(void)
+{
+ pfuze_init();
+
+ return 0;
+}
+
int checkboard(void)
{
puts("Board: MX6SX SABRE SDB\n");
diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h
index 390286b..7967b5d 100644
--- a/include/configs/mx6sxsabresd.h
+++ b/include/configs/mx6sxsabresd.h
@@ -28,6 +28,7 @@
#define CONFIG_SYS_MALLOC_LEN (3 * SZ_1M)

#define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_BOARD_LATE_INIT
#define CONFIG_MXC_GPIO

#define CONFIG_MXC_UART
@@ -168,6 +169,18 @@
#define CONFIG_CMD_FAT
#define CONFIG_DOS_PARTITION

+/* 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_PFUZE100
+#define CONFIG_POWER_PFUZE100_I2C_ADDR 0x08
+
/* FLASH and environment organization */
#define CONFIG_SYS_NO_FLASH

--
1.8.3.2