imx6logic.c
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/*
* Copyright (C) 2017 Logic PD, Inc.
*
* Author: Adam Ford <aford173@gmail.com>
*
* Based on SabreSD by Fabio Estevam <fabio.estevam@nxp.com>
* and updates by Jagan Teki <jagan@amarulasolutions.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <miiphy.h>
#include <input.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <linux/sizes.h>
#include <asm/arch/clock.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mxc_hdmi.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/mach-imx/iomux-v3.h>
DECLARE_GLOBAL_DATA_PTR;
#define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define NAND_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
int dram_init(void)
{
gd->ram_size = imx_ddr_size();
return 0;
}
static iomux_v3_cfg_t const uart1_pads[] = {
MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
};
static iomux_v3_cfg_t const uart2_pads[] = {
MX6_PAD_SD4_DAT4__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_SD4_DAT5__UART2_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_SD4_DAT6__UART2_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_SD4_DAT7__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
};
static iomux_v3_cfg_t const uart3_pads[] = {
MX6_PAD_EIM_D23__UART3_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_EIM_D24__UART3_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_EIM_D25__UART3_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_EIM_EB3__UART3_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
};
static void fixup_enet_clock(void)
{
struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
struct gpio_desc nint;
struct gpio_desc reset;
int ret;
/* Set Ref Clock to 50 MHz */
enable_fec_anatop_clock(0, ENET_50MHZ);
/* Set GPIO_16 as ENET_REF_CLK_OUT */
setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
/* Request GPIO Pins to reset Ethernet with new clock */
ret = dm_gpio_lookup_name("GPIO4_7", &nint);
if (ret) {
printf("Unable to lookup GPIO4_7\n");
return;
}
ret = dm_gpio_request(&nint, "eth0_nInt");
if (ret) {
printf("Unable to request eth0_nInt\n");
return;
}
/* Ensure nINT is input or PHY won't startup */
dm_gpio_set_dir_flags(&nint, GPIOD_IS_IN);
ret = dm_gpio_lookup_name("GPIO4_9", &reset);
if (ret) {
printf("Unable to lookup GPIO4_9\n");
return;
}
ret = dm_gpio_request(&reset, "eth0_reset");
if (ret) {
printf("Unable to request eth0_reset\n");
return;
}
/* Reset LAN8710A PHY */
dm_gpio_set_dir_flags(&reset, GPIOD_IS_OUT);
dm_gpio_set_value(&reset, 0);
udelay(150);
dm_gpio_set_value(&reset, 1);
mdelay(50);
}
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
imx_iomux_v3_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads));
}
static iomux_v3_cfg_t const nand_pads[] = {
MX6_PAD_NANDF_CS0__NAND_CE0_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_ALE__NAND_ALE | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_CLE__NAND_CLE | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_WP_B__NAND_WP_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_RB0__NAND_READY_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_D0__NAND_DATA00 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_D1__NAND_DATA01 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_D2__NAND_DATA02 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_D3__NAND_DATA03 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_D4__NAND_DATA04 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_D5__NAND_DATA05 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_D6__NAND_DATA06 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_NANDF_D7__NAND_DATA07 | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_SD4_CLK__NAND_WE_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
MX6_PAD_SD4_CMD__NAND_RE_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
};
static void setup_nand_pins(void)
{
imx_iomux_v3_setup_multiple_pads(nand_pads, ARRAY_SIZE(nand_pads));
}
int board_phy_config(struct phy_device *phydev)
{
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
/*
* Do not overwrite the console
* Use always serial for U-Boot console
*/
int overwrite_console(void)
{
return 1;
}
int board_early_init_f(void)
{
fixup_enet_clock();
setup_iomux_uart();
setup_nand_pins();
return 0;
}
int board_init(void)
{
/* address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
return 0;
}
int board_late_init(void)
{
env_set("board_name", "imx6logic");
if (is_mx6dq()) {
env_set("board_rev", "MX6DQ");
env_set("fdt_file", "imx6q-logicpd.dtb");
}
return 0;
}