u-boot-brain/board/barco/platinum/platinum.c

/*
 * Copyright (C) 2014, Barco (www.barco.com)
 * Copyright (C) 2014 Stefan Roese <sr@denx.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/imx-common/iomux-v3.h>
#include <asm/imx-common/boot_mode.h>

#include "platinum.h"

DECLARE_GLOBAL_DATA_PTR;

iomux_v3_cfg_t const usdhc3_pads[] = {
	MX6_PAD_SD3_CLK__SD3_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_CMD__SD3_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT0__SD3_DATA0	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT1__SD3_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT2__SD3_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT3__SD3_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT5__GPIO7_IO00	| MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
};

iomux_v3_cfg_t nfc_pads[] = {
	MX6_PAD_NANDF_CLE__NAND_CLE		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_ALE__NAND_ALE		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_WP_B__NAND_WP_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_RB0__NAND_READY_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_CS0__NAND_CE0_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_CS1__NAND_CE1_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_CS2__NAND_CE2_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_CS3__NAND_CE3_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_SD4_CMD__NAND_RE_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_SD4_CLK__NAND_WE_B		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_D0__NAND_DATA00		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_D1__NAND_DATA01		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_D2__NAND_DATA02		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_D3__NAND_DATA03		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_D4__NAND_DATA04		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_D5__NAND_DATA05		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_D6__NAND_DATA06		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_NANDF_D7__NAND_DATA07		| MUX_PAD_CTRL(NO_PAD_CTRL),
	MX6_PAD_SD4_DAT0__NAND_DQS		| MUX_PAD_CTRL(NO_PAD_CTRL),
};

struct fsl_esdhc_cfg usdhc_cfg[] = {
	{ USDHC3_BASE_ADDR },
};

void setup_gpmi_nand(void)
{
	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;

	/* config gpmi nand iomux */
	imx_iomux_v3_setup_multiple_pads(nfc_pads, ARRAY_SIZE(nfc_pads));

	/* config gpmi and bch clock to 100 MHz */
	clrsetbits_le32(&mxc_ccm->cs2cdr,
			MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK |
			MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK |
			MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK,
			MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) |
			MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) |
			MXC_CCM_CS2CDR_ENFC_CLK_SEL(3));

	/* enable gpmi and bch clock gating */
	setbits_le32(&mxc_ccm->CCGR4,
		     MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
		     MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_OFFSET);

	/* enable apbh clock gating */
	setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK);
}

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

	return 0;
}

int board_ehci_hcd_init(int port)
{
	return 0;
}

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

	if (cfg->esdhc_base == usdhc_cfg[0].esdhc_base) {
		unsigned sd3_cd = IMX_GPIO_NR(7, 0);
		gpio_direction_input(sd3_cd);
		return !gpio_get_value(sd3_cd);
	}

	return 0;
}

int board_mmc_init(bd_t *bis)
{
	imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);

	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
}

void board_init_gpio(void)
{
	platinum_init_gpio();
}

void board_init_gpmi_nand(void)
{
	setup_gpmi_nand();
}

void board_init_i2c(void)
{
	platinum_setup_i2c();
}

void board_init_spi(void)
{
	platinum_setup_spi();
}

void board_init_uart(void)
{
	platinum_setup_uart();
}

void board_init_usb(void)
{
	platinum_init_usb();
}

void board_init_finished(void)
{
	platinum_init_finished();
}

int board_phy_config(struct phy_device *phydev)
{
	return platinum_phy_config(phydev);
}

int board_eth_init(bd_t *bis)
{
	return cpu_eth_init(bis);
}

int board_early_init_f(void)
{
	board_init_uart();

	return 0;
}

int board_init(void)
{
	/* address of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;

	board_init_spi();

	board_init_i2c();

	board_init_gpmi_nand();

	board_init_gpio();

	board_init_usb();

	board_init_finished();

	return 0;
}

int checkboard(void)
{
	puts("Board: " CONFIG_PLATINUM_BOARD "\n");
	return 0;
}

static const struct boot_mode board_boot_modes[] = {
	/* NAND */
	{ "nand", MAKE_CFGVAL(0x80, 0x02, 0x00, 0x00) },
	/* 4 bit bus width */
	{ "mmc0", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00) },
	{ "mmc1", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00) },
	{ NULL, 0 },
};

int misc_init_r(void)
{
	add_board_boot_modes(board_boot_modes);

	return 0;
}