warp.c
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/*
* Copyright (C) 2014, 2015 O.S. Systems Software LTDA.
* Copyright (C) 2014 Kynetics LLC.
* Copyright (C) 2014 Revolution Robotics, Inc.
*
* Author: Otavio Salvador <otavio@ossystems.com.br>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/arch/clock.h>
#include <asm/arch/iomux.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/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;
#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS | \
PAD_CTL_LVE)
#define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP | \
PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
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 = imx_ddr_size();
return 0;
}
static void setup_iomux_uart(void)
{
static iomux_v3_cfg_t const uart1_pads[] = {
MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
};
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
static struct fsl_esdhc_cfg usdhc_cfg[1] = {
{USDHC2_BASE_ADDR, 0, 0, 0, 1},
};
int board_mmc_getcd(struct mmc *mmc)
{
return 1; /* Assume boot SD always present */
}
int board_mmc_init(bd_t *bis)
{
static iomux_v3_cfg_t const usdhc2_pads[] = {
MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_RST__USDHC2_RST | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT4__USDHC2_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT5__USDHC2_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT6__USDHC2_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD2_DAT7__USDHC2_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
};
imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
}
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();
return 0;
}
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;
}
int board_late_init(void)
{
#ifdef CONFIG_HW_WATCHDOG
hw_watchdog_init();
#endif
return 0;
}
int checkboard(void)
{
puts("Board: WaRP Board\n");
return 0;
}