board/freescale/mx6qsabrelite/mx6qsabrelite.c

/*
 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mx6x_pins.h>
#include <asm/arch/iomux-v3.h>
#include <asm/errno.h>
#include <asm/gpio.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <miiphy.h>
#include <netdev.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 USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |            \
       PAD_CTL_PUS_47K_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)

int dram_init(void)
{
       gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);

       return 0;
}

iomux_v3_cfg_t uart1_pads[] = {
	MX6Q_PAD_SD3_DAT6__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6Q_PAD_SD3_DAT7__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
};

iomux_v3_cfg_t uart2_pads[] = {
       MX6Q_PAD_EIM_D26__UART2_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
       MX6Q_PAD_EIM_D27__UART2_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
};

iomux_v3_cfg_t usdhc3_pads[] = {
       MX6Q_PAD_SD3_CLK__USDHC3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD3_CMD__USDHC3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD3_DAT5__GPIO_7_0    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};

iomux_v3_cfg_t usdhc4_pads[] = {
       MX6Q_PAD_SD4_CLK__USDHC4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD4_CMD__USDHC4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD4_DAT0__USDHC4_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD4_DAT1__USDHC4_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD4_DAT2__USDHC4_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_SD4_DAT3__USDHC4_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
       MX6Q_PAD_NANDF_D6__GPIO_2_6    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};

iomux_v3_cfg_t enet_pads1[] = {
	MX6Q_PAD_ENET_MDIO__ENET_MDIO		| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_ENET_MDC__ENET_MDC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_TXC__ENET_RGMII_TXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_TD0__ENET_RGMII_TD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_TD1__ENET_RGMII_TD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_TD2__ENET_RGMII_TD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_TD3__ENET_RGMII_TD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_TX_CTL__RGMII_TX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_ENET_REF_CLK__ENET_TX_CLK	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	/* pin 35 - 1 (PHY_AD2) on reset */
	MX6Q_PAD_RGMII_RXC__GPIO_6_30		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 32 - 1 - (MODE0) all */
	MX6Q_PAD_RGMII_RD0__GPIO_6_25		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 31 - 1 - (MODE1) all */
	MX6Q_PAD_RGMII_RD1__GPIO_6_27		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 28 - 1 - (MODE2) all */
	MX6Q_PAD_RGMII_RD2__GPIO_6_28		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 27 - 1 - (MODE3) all */
	MX6Q_PAD_RGMII_RD3__GPIO_6_29		| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
	MX6Q_PAD_RGMII_RX_CTL__GPIO_6_24	| MUX_PAD_CTRL(NO_PAD_CTRL),
	/* pin 42 PHY nRST */
	MX6Q_PAD_EIM_D23__GPIO_3_23		| MUX_PAD_CTRL(NO_PAD_CTRL),
};

iomux_v3_cfg_t enet_pads2[] = {
	MX6Q_PAD_RGMII_RXC__ENET_RGMII_RXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_RD0__ENET_RGMII_RD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_RD1__ENET_RGMII_RD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_RD2__ENET_RGMII_RD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_RD3__ENET_RGMII_RD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6Q_PAD_RGMII_RX_CTL__RGMII_RX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
};

static void setup_iomux_enet(void)
{
	gpio_direction_output(87, 0);  /* GPIO 3-23 */
	gpio_direction_output(190, 1); /* GPIO 6-30 */
	gpio_direction_output(185, 1); /* GPIO 6-25 */
	gpio_direction_output(187, 1); /* GPIO 6-27 */
	gpio_direction_output(188, 1); /* GPIO 6-28*/
	gpio_direction_output(189, 1); /* GPIO 6-29 */
	imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
	gpio_direction_output(184, 1); /* GPIO 6-24 */

	/* Need delay 10ms according to KSZ9021 spec */
	udelay(1000 * 10);
	gpio_direction_output(87, 1);  /* GPIO 3-23 */

	imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
}

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));
}

#ifdef CONFIG_FSL_ESDHC
struct fsl_esdhc_cfg usdhc_cfg[2] = {
       {USDHC3_BASE_ADDR, 1},
       {USDHC4_BASE_ADDR, 1},
};

int board_mmc_getcd(struct mmc *mmc)
{
       struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
       int ret;

       if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
               gpio_direction_input(192); /*GPIO7_0*/
               ret = !gpio_get_value(192);
       } else {
               gpio_direction_input(38); /*GPIO2_6*/
               ret = !gpio_get_value(38);
       }

       return ret;
}

int board_mmc_init(bd_t *bis)
{
       s32 status = 0;
       u32 index = 0;

       for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
               switch (index) {
               case 0:
                       imx_iomux_v3_setup_multiple_pads(
                               usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
                       break;
               case 1:
                       imx_iomux_v3_setup_multiple_pads(
                               usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
                       break;
               default:
                       printf("Warning: you configured more USDHC controllers"
                               "(%d) then supported by the board (%d)\n",
                               index + 1, CONFIG_SYS_FSL_USDHC_NUM);
                       return status;
               }

               status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
       }

       return status;
}
#endif

#define MII_1000BASET_CTRL		0x9
#define MII_EXTENDED_CTRL		0xb
#define MII_EXTENDED_DATAW		0xc

int fecmxc_mii_postcall(int phy)
{
	/* prefer master mode */
	miiphy_write("FEC", phy, MII_1000BASET_CTRL, 0x0f00);

	/* min rx data delay */
	miiphy_write("FEC", phy, MII_EXTENDED_CTRL, 0x8105);
	miiphy_write("FEC", phy, MII_EXTENDED_DATAW, 0x0000);

	/* max rx/tx clock delay, min rx/tx control delay */
	miiphy_write("FEC", phy, MII_EXTENDED_CTRL, 0x8104);
	miiphy_write("FEC", phy, MII_EXTENDED_DATAW, 0xf0f0);
	miiphy_write("FEC", phy, MII_EXTENDED_CTRL, 0x104);

	return 0;
}

int board_eth_init(bd_t *bis)
{
	struct eth_device *dev;
	int ret;

	setup_iomux_enet();

	ret = cpu_eth_init(bis);
	if (ret) {
		printf("FEC MXC: %s:failed\n", __func__);
		return ret;
	}

	dev = eth_get_dev_by_name("FEC");
	if (!dev) {
		printf("FEC MXC: Unable to get FEC device entry\n");
		return -EINVAL;
	}

	ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
	if (ret) {
		printf("FEC MXC: Unable to register FEC mii postcall\n");
		return ret;
	}

	return 0;
}

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;

       return 0;
}

int checkboard(void)
{
       puts("Board: MX6Q-Sabre Lite\n");

       return 0;
}