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warp: Add MAX77696 support

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Warp has a MAX77696 PMIC connected via I2C1 bus.

Add support for it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
This commit is contained in:
Fabio Estevam 2015-07-21 19:48:41 -03:00 committed by Stefano Babic
parent a643acd44c
commit 44f98f9c8e
2 changed files with 61 additions and 0 deletions
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50
board/warp/warp.c
View File

@ -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, &reg);
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;
}

11
include/configs/warp.h
View File

@ -94,6 +94,17 @@
#define CONFIG_SYS_DFU_DATA_BUF_SIZE SZ_16M
#define DFU_DEFAULT_POLL_TIMEOUT 300
/* 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" \