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/*
* Copyright (C) 2013-2014 Freescale Semiconductor, Inc.
*
* Author: Fabio Estevam <fabio.estevam@freescale.com>
*
* 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/imx-common/iomux-v3.h>
#include <asm/io.h>
#include <linux/sizes.h>
#include <common.h>
#include <fsl_esdhc.h>
#include <mmc.h>
#include <netdev.h>
#ifdef CONFIG_SYS_I2C_MXC
#include <i2c.h>
#include <asm/imx-common/mxc_i2c.h>
#endif
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)
#define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP | \
PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define ENET_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
#define ETH_PHY_RESET IMX_GPIO_NR(4, 21)
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
return 0;
}
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),
};
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_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),
};
static iomux_v3_cfg_t const fec_pads[] = {
MX6_PAD_FEC_MDC__FEC_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_MDIO__FEC_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_CRS_DV__FEC_RX_DV | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_RXD0__FEC_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_RXD1__FEC_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_TX_EN__FEC_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_TXD0__FEC_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_TXD1__FEC_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_REF_CLK__FEC_REF_OUT | MUX_PAD_CTRL(ENET_PAD_CTRL),
MX6_PAD_FEC_RX_ER__GPIO_4_19 | MUX_PAD_CTRL(NO_PAD_CTRL),
MX6_PAD_FEC_TX_CLK__GPIO_4_21 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
static void setup_iomux_fec(void)
{
imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
/* Reset LAN8720 PHY */
gpio_direction_output(ETH_PHY_RESET , 0);
udelay(1000);
gpio_set_value(ETH_PHY_RESET, 1);
}
static struct fsl_esdhc_cfg usdhc_cfg[1] = {
{USDHC2_BASE_ADDR},
};
int board_mmc_getcd(struct mmc *mmc)
{
return 1; /* Assume boot SD always present */
}
int board_mmc_init(bd_t *bis)
{
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]);
}
#ifdef CONFIG_FEC_MXC
int board_eth_init(bd_t *bis)
{
setup_iomux_fec();
return cpu_eth_init(bis);
}
static int setup_fec(void)
{
struct iomuxc_base_regs *iomuxc_regs =
(struct iomuxc_base_regs *)IOMUXC_BASE_ADDR;
int ret;
/* clear gpr1[14], gpr1[18:17] to select anatop clock */
clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC_MASK, 0);
ret = enable_fec_anatop_clock(ENET_50MHz);
if (ret)
return ret;
return 0;
}
#endif
#ifdef CONFIG_LDO_BYPASS_CHECK
void ldo_mode_set(int ldo_bypass)
{
unsigned char value;
/* swith to ldo_bypass mode */
if (ldo_bypass) {
/* decrease VDDARM to 1.15V */
if (i2c_read(0x8, 0x20, 1, &value, 1)) {
printf("Read SW1AB error!\n");
return;
}
value &= ~0x3f;
value |= 0x22;
if (i2c_write(0x8, 0x20, 1, &value, 1)) {
printf("Set SW1AB error!\n");
return;
}
/* increase VDDSOC to 1.15V */
if (i2c_read(0x8, 0x2e, 1, &value, 1)) {
printf("Read SW1C error!\n");
return;
}
value &= ~0x3f;
value |= 0x22;
if (i2c_write(0x8, 0x2e, 1, &value, 1)) {
printf("Set SW1C error!\n");
return;
}
set_anatop_bypass();
printf("switch to ldo_bypass mode!\n");
}
}
#endif
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;
#ifdef CONFIG_FEC_MXC
setup_fec();
#endif
return 0;
}
u32 get_board_rev(void)
{
return get_cpu_rev();
}
#ifdef CONFIG_IMX_UDC
iomux_v3_cfg_t const otg_udc_pads[] = {
(MX6_PAD_EPDC_PWRCOM__ANATOP_USBOTG1_ID | MUX_PAD_CTRL(NO_PAD_CTRL)),
};
void udc_pins_setting(void)
{
imx_iomux_v3_setup_multiple_pads(otg_udc_pads,
ARRAY_SIZE(otg_udc_pads));
}
#endif /*CONFIG_IMX_UDC*/
int checkboard(void)
{
puts("Board: MX6SLEVK\n");
return 0;
}
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