xref: /openbmc/u-boot/board/freescale/mx6slevk/mx6slevk.c (revision 83d290c56fab2d38cd1ab4c4cc7099559c1d5046)

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2013 Freescale Semiconductor, Inc.
 *
 * Author: Fabio Estevam <fabio.estevam@freescale.com>
 */

#include <asm/arch/clock.h>
#include <asm/arch/iomux.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/mx6-ddr.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <asm/mach-imx/spi.h>
#include <asm/io.h>
#include <linux/sizes.h>
#include <common.h>
#include <fsl_esdhc.h>
#include <i2c.h>
#include <mmc.h>
#include <netdev.h>
#include <power/pmic.h>
#include <power/pfuze100_pmic.h>
#include "../common/pfuze.h"

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 SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)

#define OTGID_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |		\
			PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW |\
			PAD_CTL_DSE_80ohm | PAD_CTL_HYS |	\
			PAD_CTL_SRE_FAST)

#define ETH_PHY_POWER	IMX_GPIO_NR(4, 21)

int dram_init(void)
{
	gd->ram_size = imx_ddr_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),
};

#ifdef CONFIG_SPL_BUILD
static iomux_v3_cfg_t const usdhc1_pads[] = {
	/* 8 bit SD */
	MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT0__USDHC1_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT1__USDHC1_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT2__USDHC1_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT3__USDHC1_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT4__USDHC1_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT5__USDHC1_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT6__USDHC1_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD1_DAT7__USDHC1_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

	/*CD pin*/
	MX6_PAD_KEY_ROW7__GPIO_4_7 | MUX_PAD_CTRL(NO_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),

	/*CD pin*/
	MX6_PAD_SD2_DAT7__GPIO_5_0 | MUX_PAD_CTRL(NO_PAD_CTRL),
};

static iomux_v3_cfg_t const usdhc3_pads[] = {
	MX6_PAD_SD3_CLK__USDHC3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_CMD__USDHC3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
	MX6_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

	/*CD pin*/
	MX6_PAD_REF_CLK_32K__GPIO_3_22 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
#endif

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),
};

#ifdef CONFIG_MXC_SPI
static iomux_v3_cfg_t ecspi1_pads[] = {
	MX6_PAD_ECSPI1_MISO__ECSPI_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
	MX6_PAD_ECSPI1_MOSI__ECSPI_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
	MX6_PAD_ECSPI1_SCLK__ECSPI_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
	MX6_PAD_ECSPI1_SS0__GPIO4_IO11  | MUX_PAD_CTRL(NO_PAD_CTRL),
};

int board_spi_cs_gpio(unsigned bus, unsigned cs)
{
	return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(4, 11)) : -1;
}

static void setup_spi(void)
{
	imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
}
#endif

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));

	/* Power up LAN8720 PHY */
	gpio_request(ETH_PHY_POWER, "eth_pwr");
	gpio_direction_output(ETH_PHY_POWER , 1);
	udelay(15000);
}

int board_mmc_get_env_dev(int devno)
{
	return devno;
}

#ifdef CONFIG_DM_PMIC_PFUZE100
int power_init_board(void)
{
	struct udevice *dev;
	int ret;
	u32 dev_id, rev_id, i;
	u32 switch_num = 6;
	u32 offset = PFUZE100_SW1CMODE;

	ret = pmic_get("pfuze100", &dev);
	if (ret == -ENODEV)
		return 0;

	if (ret != 0)
		return ret;

	dev_id = pmic_reg_read(dev, PFUZE100_DEVICEID);
	rev_id = pmic_reg_read(dev, PFUZE100_REVID);
	printf("PMIC: PFUZE100! DEV_ID=0x%x REV_ID=0x%x\n", dev_id, rev_id);

	/* set SW1AB staby volatage 0.975V */
	pmic_clrsetbits(dev, PFUZE100_SW1ABSTBY, 0x3f, 0x1b);

	/* set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
	pmic_clrsetbits(dev, PFUZE100_SW1ABCONF, 0xc0, 0x40);

	/* set SW1C staby volatage 0.975V */
	pmic_clrsetbits(dev, PFUZE100_SW1CSTBY, 0x3f, 0x1b);

	/* set SW1C/VDDSOC step ramp up time to from 16us to 4us/25mV */
	pmic_clrsetbits(dev, PFUZE100_SW1CCONF, 0xc0, 0x40);

	/* Init mode to APS_PFM */
	pmic_reg_write(dev, PFUZE100_SW1ABMODE, APS_PFM);

	for (i = 0; i < switch_num - 1; i++)
		pmic_reg_write(dev, offset + i * SWITCH_SIZE, APS_PFM);

	return 0;
}
#endif

#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 *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;

	/* clear gpr1[14], gpr1[18:17] to select anatop clock */
	clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC_MASK, 0);

	return enable_fec_anatop_clock(0, ENET_50MHZ);
}
#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_MXC_SPI
	gpio_request(IMX_GPIO_NR(4, 11), "spi_cs");
	setup_spi();
#endif

#ifdef	CONFIG_FEC_MXC
	setup_fec();
#endif

	return 0;
}

int checkboard(void)
{
	puts("Board: MX6SLEVK\n");

	return 0;
}

#ifdef CONFIG_SPL_BUILD
#include <spl.h>
#include <linux/libfdt.h>

#define USDHC1_CD_GPIO	IMX_GPIO_NR(4, 7)
#define USDHC2_CD_GPIO	IMX_GPIO_NR(5, 0)
#define USDHC3_CD_GPIO	IMX_GPIO_NR(3, 22)

static struct fsl_esdhc_cfg usdhc_cfg[3] = {
	{USDHC1_BASE_ADDR},
	{USDHC2_BASE_ADDR, 0, 4},
	{USDHC3_BASE_ADDR, 0, 4},
};

int board_mmc_getcd(struct mmc *mmc)
{
	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
	int ret = 0;

	switch (cfg->esdhc_base) {
	case USDHC1_BASE_ADDR:
		gpio_request(USDHC1_CD_GPIO, "cd1_gpio");
		ret = !gpio_get_value(USDHC1_CD_GPIO);
		break;
	case USDHC2_BASE_ADDR:
		gpio_request(USDHC2_CD_GPIO, "cd2_gpio");
		ret = !gpio_get_value(USDHC2_CD_GPIO);
		break;
	case USDHC3_BASE_ADDR:
		gpio_request(USDHC3_CD_GPIO, "cd3_gpio");
		ret = !gpio_get_value(USDHC3_CD_GPIO);
		break;
	}

	return ret;
}

int board_mmc_init(bd_t *bis)
{
	struct src *src_regs = (struct src *)SRC_BASE_ADDR;
	u32 val;
	u32 port;

	val = readl(&src_regs->sbmr1);

	/* Boot from USDHC */
	port = (val >> 11) & 0x3;
	switch (port) {
	case 0:
		imx_iomux_v3_setup_multiple_pads(usdhc1_pads,
						 ARRAY_SIZE(usdhc1_pads));
		gpio_direction_input(USDHC1_CD_GPIO);
		usdhc_cfg[0].esdhc_base = USDHC1_BASE_ADDR;
		usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
		break;
	case 1:
		imx_iomux_v3_setup_multiple_pads(usdhc2_pads,
						 ARRAY_SIZE(usdhc2_pads));
		gpio_direction_input(USDHC2_CD_GPIO);
		usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
		usdhc_cfg[0].max_bus_width = 4;
		usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
		break;
	case 2:
		imx_iomux_v3_setup_multiple_pads(usdhc3_pads,
						 ARRAY_SIZE(usdhc3_pads));
		gpio_direction_input(USDHC3_CD_GPIO);
		usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR;
		usdhc_cfg[0].max_bus_width = 4;
		usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
		break;
	}

	gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
}

const struct mx6sl_iomux_ddr_regs mx6_ddr_ioregs = {
	.dram_sdqs0 = 0x00003030,
	.dram_sdqs1 = 0x00003030,
	.dram_sdqs2 = 0x00003030,
	.dram_sdqs3 = 0x00003030,
	.dram_dqm0 = 0x00000030,
	.dram_dqm1 = 0x00000030,
	.dram_dqm2 = 0x00000030,
	.dram_dqm3 = 0x00000030,
	.dram_cas  = 0x00000030,
	.dram_ras  = 0x00000030,
	.dram_sdclk_0 = 0x00000028,
	.dram_reset = 0x00000030,
	.dram_sdba2 = 0x00000000,
	.dram_odt0 = 0x00000008,
	.dram_odt1 = 0x00000008,
};

const struct mx6sl_iomux_grp_regs mx6_grp_ioregs = {
	.grp_b0ds = 0x00000030,
	.grp_b1ds = 0x00000030,
	.grp_b2ds = 0x00000030,
	.grp_b3ds = 0x00000030,
	.grp_addds = 0x00000030,
	.grp_ctlds = 0x00000030,
	.grp_ddrmode_ctl = 0x00020000,
	.grp_ddrpke = 0x00000000,
	.grp_ddrmode = 0x00020000,
	.grp_ddr_type = 0x00080000,
};

const struct mx6_mmdc_calibration mx6_mmcd_calib = {
	.p0_mpdgctrl0 =  0x20000000,
	.p0_mpdgctrl1 =  0x00000000,
	.p0_mprddlctl =  0x4241444a,
	.p0_mpwrdlctl =  0x3030312b,
	.mpzqlp2ctl = 0x1b4700c7,
};

static struct mx6_lpddr2_cfg mem_ddr = {
	.mem_speed = 800,
	.density = 4,
	.width = 32,
	.banks = 8,
	.rowaddr = 14,
	.coladdr = 10,
	.trcd_lp = 2000,
	.trppb_lp = 2000,
	.trpab_lp = 2250,
	.trasmin = 4200,
};

static void ccgr_init(void)
{
	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;

	writel(0xFFFFFFFF, &ccm->CCGR0);
	writel(0xFFFFFFFF, &ccm->CCGR1);
	writel(0xFFFFFFFF, &ccm->CCGR2);
	writel(0xFFFFFFFF, &ccm->CCGR3);
	writel(0xFFFFFFFF, &ccm->CCGR4);
	writel(0xFFFFFFFF, &ccm->CCGR5);
	writel(0xFFFFFFFF, &ccm->CCGR6);

	writel(0x00260324, &ccm->cbcmr);
}

static void spl_dram_init(void)
{
	struct mx6_ddr_sysinfo sysinfo = {
		.dsize = mem_ddr.width / 32,
		.cs_density = 20,
		.ncs = 2,
		.cs1_mirror = 0,
		.walat = 0,
		.ralat = 2,
		.mif3_mode = 3,
		.bi_on = 1,
		.rtt_wr = 0,        /* LPDDR2 does not need rtt_wr rtt_nom */
		.rtt_nom = 0,
		.sde_to_rst = 0,    /* LPDDR2 does not need this field */
		.rst_to_cke = 0x10, /* JEDEC value for LPDDR2: 200us */
		.ddr_type = DDR_TYPE_LPDDR2,
		.refsel = 0,	/* Refresh cycles at 64KHz */
		.refr = 3,	/* 4 refresh commands per refresh cycle */
	};
	mx6sl_dram_iocfg(32, &mx6_ddr_ioregs, &mx6_grp_ioregs);
	mx6_dram_cfg(&sysinfo, &mx6_mmcd_calib, &mem_ddr);
}

void board_init_f(ulong dummy)
{
	/* setup AIPS and disable watchdog */
	arch_cpu_init();

	ccgr_init();

	/* iomux and setup of i2c */
	board_early_init_f();

	/* setup GP timer */
	timer_init();

	/* UART clocks enabled and gd valid - init serial console */
	preloader_console_init();

	/* DDR initialization */
	spl_dram_init();

	/* Clear the BSS. */
	memset(__bss_start, 0, __bss_end - __bss_start);

	/* load/boot image from boot device */
	board_init_r(NULL, 0);
}
#endif