u-boot/board/renesas/porter/porter.c

/*
 * board/renesas/porter/porter.c
 *
 * Copyright (C) 2015 Renesas Electronics Corporation
 * Copyright (C) 2015 Cogent Embedded, Inc.
 *
 * SPDX-License-Identifier: GPL-2.0
 */

#include <common.h>
#include <malloc.h>
#include <dm.h>
#include <dm/platform_data/serial_sh.h>
#include <asm/processor.h>
#include <asm/mach-types.h>
#include <asm/io.h>
#include <linux/errno.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/arch/rmobile.h>
#include <asm/arch/rcar-mstp.h>
#include <asm/arch/sh_sdhi.h>
#include <netdev.h>
#include <miiphy.h>
#include <i2c.h>
#include <div64.h>
#include "qos.h"

DECLARE_GLOBAL_DATA_PTR;

#define CLK2MHZ(clk)	(clk / 1000 / 1000)
void s_init(void)
{
	struct rcar_rwdt *rwdt = (struct rcar_rwdt *)RWDT_BASE;
	struct rcar_swdt *swdt = (struct rcar_swdt *)SWDT_BASE;
	u32 stc;

	/* Watchdog init */
	writel(0xA5A5A500, &rwdt->rwtcsra);
	writel(0xA5A5A500, &swdt->swtcsra);

	/* CPU frequency setting. Set to 1.5GHz */
	stc = ((1500 / CLK2MHZ(CONFIG_SYS_CLK_FREQ)) - 1) << PLL0_STC_BIT;
	clrsetbits_le32(PLL0CR, PLL0_STC_MASK, stc);

	/* QoS */
	qos_init();
}

#define TMU0_MSTP125	BIT(25)

#define SD2CKCR		0xE615026C
#define SD_97500KHZ	0x7

int board_early_init_f(void)
{
	mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);

	/*
	 * SD0 clock is set to 97.5MHz by default.
	 * Set SD2 to the 97.5MHz as well.
	 */
	writel(SD_97500KHZ, SD2CKCR);

	return 0;
}

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

	return 0;
}

int dram_init(void)
{
	if (fdtdec_setup_memory_size() != 0)
		return -EINVAL;

	return 0;
}

int dram_init_banksize(void)
{
	fdtdec_setup_memory_banksize();

	return 0;
}

/* porter has KSZ8041RNLI */
#define PHY_CONTROL1		0x1E
#define PHY_LED_MODE		0xC0000
#define PHY_LED_MODE_ACK	0x4000
int board_phy_config(struct phy_device *phydev)
{
	int ret = phy_read(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1);
	ret &= ~PHY_LED_MODE;
	ret |= PHY_LED_MODE_ACK;
	ret = phy_write(phydev, MDIO_DEVAD_NONE, PHY_CONTROL1, (u16)ret);

	return 0;
}

const struct rmobile_sysinfo sysinfo = {
	CONFIG_ARCH_RMOBILE_BOARD_STRING
};

void reset_cpu(ulong addr)
{
	u8 val;

	i2c_set_bus_num(2); /* PowerIC connected to ch2 */
	i2c_read(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
	val |= 0x02;
	i2c_write(CONFIG_SYS_I2C_POWERIC_ADDR, 0x13, 1, &val, 1);
}