pico-imx7d: Add initial support

Add the initial support for pico-imx7d board based on Wig Cheng's
source code.

Add support for eMMC, USB gadget, I2C, PMIC and Ethernet.

For more information about this board, please visit:
http://www.technexion.org/products/pico/pico-som/pico-imx7-emmc

Signed-off-by: Vanessa Maegima <vanessa.maegima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>

1 files changed, 289 insertions, 0 deletions

diff --git a/board/technexion/pico-imx7d/pico-imx7d.c b/board/technexion/pico-imx7d/pico-imx7d.c
new file mode 100644
index 00000000000..799751d699b
--- /dev/null
+++ b/board/technexion/pico-imx7d/pico-imx7d.c
@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2017 NXP Semiconductors
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/mx7-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/mxc_i2c.h>
+#include <asm/io.h>
+#include <common.h>
+#include <fsl_esdhc.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <mmc.h>
+#include <netdev.h>
+#include <usb.h>
+#include <power/pmic.h>
+#include <power/pfuze3000_pmic.h>
+#include "../../freescale/common/pfuze.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL  (PAD_CTL_DSE_3P3V_49OHM | \
+	PAD_CTL_PUS_PU100KOHM | PAD_CTL_HYS)
+
+#define USDHC_PAD_CTRL (PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \
+	PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PUS_PU47KOHM)
+
+#define ENET_PAD_CTRL  (PAD_CTL_PUS_PU100KOHM | PAD_CTL_DSE_3P3V_49OHM)
+#define ENET_PAD_CTRL_MII  (PAD_CTL_DSE_3P3V_32OHM)
+
+#define ENET_RX_PAD_CTRL  (PAD_CTL_PUS_PU100KOHM | PAD_CTL_DSE_3P3V_49OHM)
+
+#define I2C_PAD_CTRL    (PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \
+	PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PUS_PU100KOHM)
+
+#ifdef CONFIG_SYS_I2C_MXC
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+/* I2C4 for PMIC */
+static struct i2c_pads_info i2c_pad_info4 = {
+	.scl = {
+		.i2c_mode = MX7D_PAD_SAI1_RX_SYNC__I2C4_SCL | PC,
+		.gpio_mode = MX7D_PAD_SAI1_RX_SYNC__GPIO6_IO16 | PC,
+		.gp = IMX_GPIO_NR(6, 16),
+	},
+	.sda = {
+		.i2c_mode = MX7D_PAD_SAI1_RX_BCLK__I2C4_SDA | PC,
+		.gpio_mode = MX7D_PAD_SAI1_RX_BCLK__GPIO6_IO17 | PC,
+		.gp = IMX_GPIO_NR(6, 17),
+	},
+};
+#endif
+
+int dram_init(void)
+{
+	gd->ram_size = PHYS_SDRAM_SIZE;
+
+	return 0;
+}
+
+#ifdef CONFIG_POWER
+#define I2C_PMIC	3
+int power_init_board(void)
+{
+	struct pmic *p;
+	int ret;
+	unsigned int reg, rev_id;
+
+	ret = power_pfuze3000_init(I2C_PMIC);
+	if (ret)
+		return ret;
+
+	p = pmic_get("PFUZE3000");
+	ret = pmic_probe(p);
+	if (ret)
+		return ret;
+
+	pmic_reg_read(p, PFUZE3000_DEVICEID, &reg);
+	pmic_reg_read(p, PFUZE3000_REVID, &rev_id);
+	printf("PMIC:  PFUZE3000 DEV_ID=0x%x REV_ID=0x%x\n", reg, rev_id);
+
+	/* disable Low Power Mode during standby mode */
+	pmic_reg_read(p, PFUZE3000_LDOGCTL, &reg);
+	reg |= 0x1;
+	pmic_reg_write(p, PFUZE3000_LDOGCTL, reg);
+
+	/* SW1A/1B mode set to APS/APS */
+	reg = 0x8;
+	pmic_reg_write(p, PFUZE3000_SW1AMODE, reg);
+	pmic_reg_write(p, PFUZE3000_SW1BMODE, reg);
+
+	/* SW1A/1B standby voltage set to 1.025V */
+	reg = 0xd;
+	pmic_reg_write(p, PFUZE3000_SW1ASTBY, reg);
+	pmic_reg_write(p, PFUZE3000_SW1BSTBY, reg);
+
+	/* decrease SW1B normal voltage to 0.975V */
+	pmic_reg_read(p, PFUZE3000_SW1BVOLT, &reg);
+	reg &= ~0x1f;
+	reg |= PFUZE3000_SW1AB_SETP(975);
+	pmic_reg_write(p, PFUZE3000_SW1BVOLT, reg);
+
+	return 0;
+}
+#endif
+
+static iomux_v3_cfg_t const wdog_pads[] = {
+	MX7D_PAD_GPIO1_IO00__WDOG1_WDOG_B | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const uart5_pads[] = {
+	MX7D_PAD_I2C4_SCL__UART5_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX7D_PAD_I2C4_SDA__UART5_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const usdhc3_emmc_pads[] = {
+	MX7D_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_DATA0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_DATA1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_DATA2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_DATA3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_DATA4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_DATA5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_DATA6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD3_DATA7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_GPIO1_IO14__GPIO1_IO14 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+#ifdef CONFIG_FEC_MXC
+static iomux_v3_cfg_t const fec1_pads[] = {
+	MX7D_PAD_SD2_CD_B__ENET1_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL_MII),
+	MX7D_PAD_SD2_WP__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL_MII),
+	MX7D_PAD_ENET1_RGMII_TXC__ENET1_RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_TD0__ENET1_RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_TD1__ENET1_RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_TD2__ENET1_RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_TD3__ENET1_RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_TX_CTL__ENET1_RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_RXC__ENET1_RGMII_RXC | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_RD0__ENET1_RGMII_RD0 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_RD1__ENET1_RGMII_RD1 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_RD2__ENET1_RGMII_RD2 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_RD3__ENET1_RGMII_RD3 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+	MX7D_PAD_ENET1_RGMII_RX_CTL__ENET1_RGMII_RX_CTL | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
+	MX7D_PAD_SD3_STROBE__GPIO6_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX7D_PAD_SD3_RESET_B__GPIO6_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
+#define FEC1_RST_GPIO	IMX_GPIO_NR(6, 11)
+
+static void setup_iomux_fec(void)
+{
+	imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
+
+	gpio_direction_output(FEC1_RST_GPIO, 0);
+	udelay(500);
+	gpio_set_value(FEC1_RST_GPIO, 1);
+}
+
+int board_eth_init(bd_t *bis)
+{
+	setup_iomux_fec();
+
+	return fecmxc_initialize_multi(bis, 0,
+		CONFIG_FEC_MXC_PHYADDR, IMX_FEC_BASE);
+}
+
+static int setup_fec(void)
+{
+	struct iomuxc_gpr_base_regs *const iomuxc_gpr_regs
+		= (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
+
+	/* Use 125M anatop REF_CLK1 for ENET1, clear gpr1[13], gpr1[17] */
+	clrsetbits_le32(&iomuxc_gpr_regs->gpr[1],
+			(IOMUXC_GPR_GPR1_GPR_ENET1_TX_CLK_SEL_MASK |
+			IOMUXC_GPR_GPR1_GPR_ENET1_CLK_DIR_MASK), 0);
+
+	return set_clk_enet(ENET_125MHz);
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	unsigned short val;
+
+	/* To enable AR8035 ouput a 125MHz clk from CLK_25M */
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
+
+	val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
+	val &= 0xffe7;
+	val |= 0x18;
+	phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val);
+
+	/* introduce tx clock delay */
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
+	val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
+	val |= 0x0100;
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);
+
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+#endif
+
+static void setup_iomux_uart(void)
+{
+	imx_iomux_v3_setup_multiple_pads(uart5_pads, ARRAY_SIZE(uart5_pads));
+}
+
+static struct fsl_esdhc_cfg usdhc_cfg[1] = {
+	{USDHC3_BASE_ADDR},
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	/* Assume uSDHC3 emmc is always present */
+	return 1;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	imx_iomux_v3_setup_multiple_pads(
+			usdhc3_emmc_pads, ARRAY_SIZE(usdhc3_emmc_pads));
+	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
+
+	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+}
+
+int board_early_init_f(void)
+{
+	setup_iomux_uart();
+
+#ifdef CONFIG_SYS_I2C_MXC
+	setup_i2c(3, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info4);
+#endif
+
+	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;
+}
+
+int board_late_init(void)
+{
+	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
+
+	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
+
+	set_wdog_reset(wdog);
+
+	/*
+	 * Do not assert internal WDOG_RESET_B_DEB(controlled by bit 4),
+	 * since we use PMIC_PWRON to reset the board.
+	 */
+	clrsetbits_le16(&wdog->wcr, 0, 0x10);
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: i.MX7D PICOSOM\n");
+
+	return 0;
+}
+
+int board_usb_phy_mode(int port)
+{
+	return USB_INIT_DEVICE;
+}