[U-Boot] [PATCH v4] mx6sabred: Add PFUZE100 PMIC support
Fabio Estevam
festevam at gmail.com
Fri May 9 18:15:42 CEST 2014
From: Fabio Estevam <fabio.estevam at freescale.com>
mx6sabresd boards have a PFUZE100 PMIC connected to I2C2 bus.
Add support for it
Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
Changes since v3:
- Rebase against latest u-boot.imx and call 'power_pfuze100_init'
Changes since v2:
- Remove uneeded CONFIG_BOARD_LATE_INI inside mx6sabresd.h as this is already
included in mx6sabre_common.h
Changes since v1:
- Init the PMIC inside board_late_init()
Stefano,
I tried your suggestion of calling the pmic init inside power_init_board(), but
pmic dump command fails, so I am calling the pmic init from board_late_init()
as done on other boards for now.
board/freescale/mx6sabresd/mx6sabresd.c | 84 +++++++++++++++++++++++++++++++++
include/configs/mx6sabresd.h | 12 +++++
include/power/pfuze100_pmic.h | 4 ++
3 files changed, 100 insertions(+)
diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
index 3e314da..d7c4b4f 100644
--- a/board/freescale/mx6sabresd/mx6sabresd.c
+++ b/board/freescale/mx6sabresd/mx6sabresd.c
@@ -12,6 +12,7 @@
#include <asm/arch/mx6-pins.h>
#include <asm/errno.h>
#include <asm/gpio.h>
+#include <asm/imx-common/mxc_i2c.h>
#include <asm/imx-common/iomux-v3.h>
#include <asm/imx-common/boot_mode.h>
#include <asm/imx-common/video.h>
@@ -23,6 +24,9 @@
#include <asm/arch/crm_regs.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/pfuze100_pmic.h>
DECLARE_GLOBAL_DATA_PTR;
#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
@@ -39,6 +43,14 @@ 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_PUS_100K_UP | \
+ PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
+ PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
+#define I2C_PMIC 1
+
+#define I2C_PAD MUX_PAD_CTRL(I2C_PAD_CTRL)
+
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -129,6 +141,19 @@ iomux_v3_cfg_t const ecspi1_pads[] = {
MX6_PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
+static struct i2c_pads_info i2c_pad_info1 = {
+ .scl = {
+ .i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | I2C_PAD,
+ .gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | I2C_PAD,
+ .gp = IMX_GPIO_NR(4, 12)
+ },
+ .sda = {
+ .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | I2C_PAD,
+ .gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | I2C_PAD,
+ .gp = IMX_GPIO_NR(4, 13)
+ }
+};
+
static void setup_spi(void)
{
imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
@@ -426,6 +451,64 @@ int board_init(void)
#ifdef CONFIG_MXC_SPI
setup_spi();
#endif
+ setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
+
+ return 0;
+}
+
+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, ®);
+ printf("PMIC: PFUZE100 ID=0x%02x\n", reg);
+
+ /* Increase VGEN3 from 2.5 to 2.8V */
+ pmic_reg_read(p, PFUZE100_VGEN3VOL, ®);
+ reg &= ~0xf;
+ reg |= 0xa;
+ pmic_reg_write(p, PFUZE100_VGEN3VOL, reg);
+
+ /* Increase VGEN5 from 2.8 to 3V */
+ pmic_reg_read(p, PFUZE100_VGEN5VOL, ®);
+ reg &= ~0xf;
+ reg |= 0xc;
+ pmic_reg_write(p, PFUZE100_VGEN5VOL, reg);
+
+ /* Set SW1AB stanby volage to 0.975V */
+ pmic_reg_read(p, PFUZE100_SW1ABSTBY, ®);
+ 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 &= ~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 &= ~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 &= ~0xc0;
+ reg |= 0x40;
+ pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
return 0;
}
@@ -446,6 +529,7 @@ int board_late_init(void)
#ifdef CONFIG_CMD_BMODE
add_board_boot_modes(board_boot_modes);
#endif
+ pfuze_init();
return 0;
}
diff --git a/include/configs/mx6sabresd.h b/include/configs/mx6sabresd.h
index 0fa6573..e666ebb 100644
--- a/include/configs/mx6sabresd.h
+++ b/include/configs/mx6sabresd.h
@@ -59,4 +59,16 @@
#define CONFIG_PCIE_IMX_POWER_GPIO IMX_GPIO_NR(3, 19)
#endif
+/* 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
+
#endif /* __MX6QSABRESD_CONFIG_H */
diff --git a/include/power/pfuze100_pmic.h b/include/power/pfuze100_pmic.h
index 444aba6..0002f1e 100644
--- a/include/power/pfuze100_pmic.h
+++ b/include/power/pfuze100_pmic.h
@@ -15,7 +15,11 @@ enum {
PFUZE100_FABID = 0x04,
PFUZE100_SW1ABVOL = 0x20,
+ PFUZE100_SW1ABSTBY = 0x21,
+ PUZE_100_SW1ABCONF = 0x24,
PFUZE100_SW1CVOL = 0x2e,
+ PFUZE100_SW1CSTBY = 0x2f,
+ PFUZE100_SW1CCONF = 0x32,
PFUZE100_SW2VOL = 0x35,
PFUZE100_SW3AVOL = 0x3c,
PFUZE100_SW3BVOL = 0x43,
--
1.8.3.2
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