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44f98f9c8e
Warp has a MAX77696 PMIC connected via I2C1 bus. Add support for it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
170 lines
3.8 KiB
C
170 lines
3.8 KiB
C
/*
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* Copyright (C) 2014, 2015 O.S. Systems Software LTDA.
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* Copyright (C) 2014 Kynetics LLC.
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* Copyright (C) 2014 Revolution Robotics, Inc.
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*
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* Author: Otavio Salvador <otavio@ossystems.com.br>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <asm/arch/clock.h>
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#include <asm/arch/iomux.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/mx6-pins.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/gpio.h>
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#include <asm/imx-common/iomux-v3.h>
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#include <asm/imx-common/mxc_i2c.h>
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#include <asm/io.h>
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#include <linux/sizes.h>
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#include <common.h>
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#include <watchdog.h>
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#include <fsl_esdhc.h>
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#include <i2c.h>
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#include <mmc.h>
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#include <usb.h>
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#include <power/pmic.h>
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#include <power/max77696_pmic.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
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PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
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PAD_CTL_SRE_FAST | PAD_CTL_HYS | \
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PAD_CTL_LVE)
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#define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP | \
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PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
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PAD_CTL_SRE_FAST | PAD_CTL_HYS | \
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PAD_CTL_LVE)
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#define I2C_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
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PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
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PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
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PAD_CTL_ODE | PAD_CTL_SRE_FAST)
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int dram_init(void)
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{
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gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
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return 0;
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}
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static void setup_iomux_uart(void)
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{
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static iomux_v3_cfg_t const uart1_pads[] = {
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MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
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MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
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};
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imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
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}
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static struct fsl_esdhc_cfg usdhc_cfg[1] = {
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{USDHC2_BASE_ADDR},
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};
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int board_mmc_getcd(struct mmc *mmc)
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{
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return 1; /* Assume boot SD always present */
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}
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int board_mmc_init(bd_t *bis)
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{
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static iomux_v3_cfg_t const usdhc2_pads[] = {
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MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_RST__USDHC2_RST | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_DAT4__USDHC2_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_DAT5__USDHC2_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_DAT6__USDHC2_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD2_DAT7__USDHC2_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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};
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imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
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usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
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return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
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}
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int board_usb_phy_mode(int port)
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{
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return USB_INIT_DEVICE;
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}
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/* I2C1 for PMIC */
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#define I2C_PMIC 0
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#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
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struct i2c_pads_info i2c_pad_info1 = {
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.sda = {
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.i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC,
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.gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC,
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.gp = IMX_GPIO_NR(3, 13),
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},
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.scl = {
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.i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC,
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.gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC,
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.gp = IMX_GPIO_NR(3, 12),
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},
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};
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int power_init_board(void)
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{
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struct pmic *p;
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int ret;
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unsigned int reg;
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ret = power_max77696_init(I2C_PMIC);
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if (ret)
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return ret;
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p = pmic_get("MAX77696");
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if (!p)
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return -EINVAL;
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ret = pmic_reg_read(p, CID, ®);
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if (ret)
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return ret;
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printf("PMIC: MAX77696 detected, rev=0x%x\n", reg);
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return pmic_probe(p);
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}
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int board_early_init_f(void)
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{
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setup_iomux_uart();
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return 0;
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}
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int board_init(void)
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{
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/* address of boot parameters */
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gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
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setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
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return 0;
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}
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int board_late_init(void)
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{
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#ifdef CONFIG_HW_WATCHDOG
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hw_watchdog_init();
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#endif
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return 0;
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}
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int checkboard(void)
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{
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puts("Board: WaRP Board\n");
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return 0;
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}
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