uboot/u-boot-stm32mp-2020.01/board/phytec/pcl063/pcl063.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2018 Collabora Ltd.
 *
 * Based on board/ccv/xpress/xpress.c:
 * Copyright (C) 2015-2016 Stefan Roese <sr@denx.de>
 */

#include <asm/arch/clock.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <fsl_esdhc_imx.h>
#include <linux/bitops.h>
#include <miiphy.h>
#include <netdev.h>
#include <usb.h>
#include <usb/ehci-ci.h>

DECLARE_GLOBAL_DATA_PTR;

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

	return 0;
}

#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)

static iomux_v3_cfg_t const uart1_pads[] = {
	MX6_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
};

static iomux_v3_cfg_t const uart5_pads[] = {
	MX6_PAD_UART5_TX_DATA__UART5_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_UART5_RX_DATA__UART5_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_GPIO1_IO09__UART5_DCE_CTS | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX6_PAD_GPIO1_IO08__UART5_DCE_RTS | MUX_PAD_CTRL(UART_PAD_CTRL),
};

static void setup_iomux_uart(void)
{
	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
	imx_iomux_v3_setup_multiple_pads(uart5_pads, ARRAY_SIZE(uart5_pads));
}

#ifdef CONFIG_NAND_MXS

#define NAND_PAD_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_SRE_SLOW | PAD_CTL_HYS)

#define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_PUS_22K_UP)

#define NANDREADYPC MUX_PAD_CTRL(NAND_PAD_READY0_CTRL)

static iomux_v3_cfg_t const gpmi_pads[] = {
	MX6_PAD_NAND_DATA00__RAWNAND_DATA00	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_DATA01__RAWNAND_DATA01	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_DATA02__RAWNAND_DATA02	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_DATA03__RAWNAND_DATA03	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_DATA04__RAWNAND_DATA04	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_DATA05__RAWNAND_DATA05	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_DATA06__RAWNAND_DATA06	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_DATA07__RAWNAND_DATA07	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_CLE__RAWNAND_CLE		| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_ALE__RAWNAND_ALE		| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_RE_B__RAWNAND_RE_B		| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_WE_B__RAWNAND_WE_B		| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_CE0_B__RAWNAND_CE0_B	| MUX_PAD_CTRL(NAND_PAD_CTRL),
	MX6_PAD_NAND_READY_B__RAWNAND_READY_B	| NANDREADYPC,
};

static void setup_gpmi_nand(void)
{
	imx_iomux_v3_setup_multiple_pads(gpmi_pads, ARRAY_SIZE(gpmi_pads));

	setup_gpmi_io_clk((3 << MXC_CCM_CSCDR1_BCH_PODF_OFFSET) |
			  (3 << MXC_CCM_CSCDR1_GPMI_PODF_OFFSET));
}

#endif /* CONFIG_NAND_MXS */

#ifdef CONFIG_FEC_MXC

#define ENET_CLK_PAD_CTRL (PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST)

#define ENET_PAD_CTRL     (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE       | \
			   PAD_CTL_SPEED_HIGH  | PAD_CTL_DSE_48ohm | \
			   PAD_CTL_SRE_FAST)

#define MDIO_PAD_CTRL     (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE      | \
			   PAD_CTL_DSE_48ohm   | PAD_CTL_SRE_FAST | \
			   PAD_CTL_ODE)

static iomux_v3_cfg_t const fec1_pads[] = {
	MX6_PAD_GPIO1_IO06__ENET1_MDIO | MUX_PAD_CTRL(MDIO_PAD_CTRL),
	MX6_PAD_GPIO1_IO07__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET1_TX_DATA0__ENET1_TDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET1_TX_DATA1__ENET1_TDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET1_TX_EN__ENET1_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
	MX6_PAD_ENET1_RX_DATA0__ENET1_RDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET1_RX_DATA1__ENET1_RDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET1_RX_ER__ENET1_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET1_RX_EN__ENET1_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
};

static iomux_v3_cfg_t const fec2_pads[] = {
	MX6_PAD_ENET2_TX_DATA0__ENET2_TDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET2_TX_DATA1__ENET2_TDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET2_TX_EN__ENET2_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET2_TX_CLK__ENET2_REF_CLK2 | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
	MX6_PAD_ENET2_RX_DATA0__ENET2_RDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET2_RX_DATA1__ENET2_RDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET2_RX_ER__ENET2_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL),
	MX6_PAD_ENET2_RX_EN__ENET2_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
};

static void setup_iomux_fec(void)
{
	imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
	imx_iomux_v3_setup_multiple_pads(fec2_pads, ARRAY_SIZE(fec2_pads));
}

static int setup_fec(void)
{
	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
	int ret;

	/*
	 * Use 50M anatop loopback REF_CLK1 for ENET1,
	 * clear gpr1[13], set gpr1[17].
	 */
	clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK,
			IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK);

	ret = enable_fec_anatop_clock(0, ENET_50MHZ);
	if (ret)
		return ret;

	/*
	 * Use 50M anatop loopback REF_CLK2 for ENET2,
	 * clear gpr1[14], set gpr1[18].
	 */
	clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
			IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);

	ret = enable_fec_anatop_clock(1, ENET_50MHZ);
	if (ret)
		return ret;

	enable_enet_clk(1);

	return 0;
}

int board_phy_config(struct phy_device *phydev)
{
	/*
	 * Defaults + Enable status LEDs (LED1: Activity, LED0: Link) & select
	 * 50 MHz RMII clock mode.
	 */
	phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190);

	if (phydev->drv->config)
		phydev->drv->config(phydev);

	return 0;
}
#endif /* CONFIG_FEC_MXC */

int board_early_init_f(void)
{
	setup_iomux_uart();
#ifdef CONFIG_FEC_MXC
	setup_iomux_fec();
#endif

	return 0;
}

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

#ifdef CONFIG_NAND_MXS
	setup_gpmi_nand();
#endif

#ifdef CONFIG_FEC_MXC
	setup_fec();
#endif
	return 0;
}

int checkboard(void)
{
	u32 cpurev = get_cpu_rev();

	printf("Board: PHYTEC phyCORE-i.MX%s\n",
	      get_imx_type((cpurev & 0xFF000) >> 12));

	return 0;
}