[U-Boot] [PATCH 1/2] power: pmic: Add support for MAX77696 PMIC
From: Fabio Estevam fabio.estevam@freescale.com
Add support for MAX77696 PMIC.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- drivers/power/pmic/Makefile | 1 + drivers/power/pmic/pmic_max77696.c | 32 ++++++++++++++++++++ include/power/max77696_pmic.h | 60 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 93 insertions(+) create mode 100644 drivers/power/pmic/pmic_max77696.c create mode 100644 include/power/max77696_pmic.h
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index ae86f04..4ad6df3 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_DM_PMIC) += pmic-uclass.o obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o +obj-$(CONFIG_POWER_MAX77696) += pmic_max77696.o obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o obj-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o diff --git a/drivers/power/pmic/pmic_max77696.c b/drivers/power/pmic/pmic_max77696.c new file mode 100644 index 0000000..93d92f5 --- /dev/null +++ b/drivers/power/pmic/pmic_max77696.c @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2015 Freescale Semiconductor, Inc. + * Fabio Estevam fabio.estevam@freescale.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <i2c.h> +#include <power/pmic.h> +#include <power/max77696_pmic.h> + +int power_max77696_init(unsigned char bus) +{ + static const char name[] = "MAX77696"; + struct pmic *p = pmic_alloc(); + + if (!p) { + printf("%s: POWER allocation error!\n", __func__); + return -ENOMEM; + } + + p->name = name; + p->interface = PMIC_I2C; + p->number_of_regs = PMIC_NUM_OF_REGS; + p->hw.i2c.addr = CONFIG_POWER_MAX77696_I2C_ADDR; + p->hw.i2c.tx_num = 1; + p->bus = bus; + + return 0; +} diff --git a/include/power/max77696_pmic.h b/include/power/max77696_pmic.h new file mode 100644 index 0000000..71cdf88 --- /dev/null +++ b/include/power/max77696_pmic.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2015 Freescale Semiconductor, Inc. + * Fabio Estevam fabio.estevam@freescale.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __MAX77696_PMIC_H__ +#define __MAX77696_PMIC_H__ + +#define CONFIG_POWER_MAX77696_I2C_ADDR 0x3C + +enum { + L01_CNFG1 = 0x43, + L01_CNFG2, + L02_CNFG1, + L02_CNFG2, + L03_CNFG1, + L03_CNFG2, + L04_CNFG1, + L04_CNFG2, + L05_CNFG1, + L05_CNFG2, + L06_CNFG1, + L06_CNFG2, + L07_CNFG1, + L07_CNFG2, + L08_CNFG1, + L08_CNFG2, + L09_CNFG1, + L09_CNFG2, + L10_CNFG1, + L10_CNFG2, + LDO_INT1, + LDO_INT2, + LDO_INT1M, + LDO_INT2M, + LDO_CNFG3, + SW1_CNTRL, + SW2_CNTRL, + SW3_CNTRL, + SW4_CNTRL, + EPDCNFG, + EPDINTS, + EPDINT, + EPDINTM, + EPDVCOM, + EPDVEE, + EPDVNEG, + EPDVPOS, + EPDVDDH, + EPDSEQ, + EPDOKINTS, + CID = 0x9c, + PMIC_NUM_OF_REGS, +}; + +int power_max77696_init(unsigned char bus); + +#endif
From: Fabio Estevam fabio.estevam@freescale.com
Warp has a MAX77696 PMIC connected via I2C1 bus.
Add support for it.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- board/warp/warp.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/configs/warp.h | 11 +++++++++++ 2 files changed, 61 insertions(+)
diff --git a/board/warp/warp.c b/board/warp/warp.c index 21ac5e7..49dfdb6 100644 --- a/board/warp/warp.c +++ b/board/warp/warp.c @@ -15,13 +15,17 @@ #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 <linux/sizes.h> #include <common.h> #include <watchdog.h> #include <fsl_esdhc.h> +#include <i2c.h> #include <mmc.h> #include <usb.h> +#include <power/pmic.h> +#include <power/max77696_pmic.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -35,6 +39,11 @@ DECLARE_GLOBAL_DATA_PTR; PAD_CTL_SRE_FAST | PAD_CTL_HYS | \ PAD_CTL_LVE)
+#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) + int dram_init(void) { gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); @@ -88,6 +97,45 @@ int board_usb_phy_mode(int port) return USB_INIT_DEVICE; }
+/* I2C1 for PMIC */ +#define I2C_PMIC 0 +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) +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; + int ret; + unsigned int reg; + + ret = power_max77696_init(I2C_PMIC); + if (ret) + return ret; + + p = pmic_get("MAX77696"); + if (!p) + return -EINVAL; + + ret = pmic_reg_read(p, CID, ®); + if (ret) + return ret; + + printf("PMIC: MAX77696 detected, rev=0x%x\n", reg); + + return pmic_probe(p); +} + int board_early_init_f(void) { setup_iomux_uart(); @@ -99,6 +147,8 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+ setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); + return 0; }
diff --git a/include/configs/warp.h b/include/configs/warp.h index 48e2058..f38f781 100644 --- a/include/configs/warp.h +++ b/include/configs/warp.h @@ -98,6 +98,17 @@ #define CONFIG_CMD_FUSE #define CONFIG_MXC_OCOTP
+/* 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_MAX77696 + #define CONFIG_EXTRA_ENV_SETTINGS \ "script=boot.scr\0" \ "image=zImage\0" \
participants (1)
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Fabio Estevam