board/hisilicon/hikey/hikey.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2015 Linaro
  * Peter Griffin <peter.griffin@linaro.org>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <common.h>
 #include <dm.h>
 #include <dm/platform_data/serial_pl01x.h>
 #include <errno.h>
 #include <malloc.h>
 #include <netdev.h>
 #include <asm/io.h>
 #include <usb.h>
 #include <power/hi6553_pmic.h>
 #include <asm-generic/gpio.h>
 #include <asm/arch/dwmmc.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/periph.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/hi6220.h>
 #include <asm/armv8/mmu.h>

 /*TODO drop this table in favour of device tree */
 static const struct hikey_gpio_platdata hi6220_gpio[] = {
 	{ 0, HI6220_GPIO_BASE(0)},
 	{ 1, HI6220_GPIO_BASE(1)},
 	{ 2, HI6220_GPIO_BASE(2)},
 	{ 3, HI6220_GPIO_BASE(3)},
 	{ 4, HI6220_GPIO_BASE(4)},
 	{ 5, HI6220_GPIO_BASE(5)},
 	{ 6, HI6220_GPIO_BASE(6)},
 	{ 7, HI6220_GPIO_BASE(7)},
 	{ 8, HI6220_GPIO_BASE(8)},
 	{ 9, HI6220_GPIO_BASE(9)},
 	{ 10, HI6220_GPIO_BASE(10)},
 	{ 11, HI6220_GPIO_BASE(11)},
 	{ 12, HI6220_GPIO_BASE(12)},
 	{ 13, HI6220_GPIO_BASE(13)},
 	{ 14, HI6220_GPIO_BASE(14)},
 	{ 15, HI6220_GPIO_BASE(15)},
 	{ 16, HI6220_GPIO_BASE(16)},
 	{ 17, HI6220_GPIO_BASE(17)},
 	{ 18, HI6220_GPIO_BASE(18)},
 	{ 19, HI6220_GPIO_BASE(19)},

 };

 U_BOOT_DEVICES(hi6220_gpios) = {
 	{ "gpio_hi6220", &hi6220_gpio[0] },
 	{ "gpio_hi6220", &hi6220_gpio[1] },
 	{ "gpio_hi6220", &hi6220_gpio[2] },
 	{ "gpio_hi6220", &hi6220_gpio[3] },
 	{ "gpio_hi6220", &hi6220_gpio[4] },
 	{ "gpio_hi6220", &hi6220_gpio[5] },
 	{ "gpio_hi6220", &hi6220_gpio[6] },
 	{ "gpio_hi6220", &hi6220_gpio[7] },
 	{ "gpio_hi6220", &hi6220_gpio[8] },
 	{ "gpio_hi6220", &hi6220_gpio[9] },
 	{ "gpio_hi6220", &hi6220_gpio[10] },
 	{ "gpio_hi6220", &hi6220_gpio[11] },
 	{ "gpio_hi6220", &hi6220_gpio[12] },
 	{ "gpio_hi6220", &hi6220_gpio[13] },
 	{ "gpio_hi6220", &hi6220_gpio[14] },
 	{ "gpio_hi6220", &hi6220_gpio[15] },
 	{ "gpio_hi6220", &hi6220_gpio[16] },
 	{ "gpio_hi6220", &hi6220_gpio[17] },
 	{ "gpio_hi6220", &hi6220_gpio[18] },
 	{ "gpio_hi6220", &hi6220_gpio[19] },
 };

 DECLARE_GLOBAL_DATA_PTR;

 static const struct pl01x_serial_platdata serial_platdata = {
 #if CONFIG_CONS_INDEX == 1
 	.base = HI6220_UART0_BASE,
 #elif CONFIG_CONS_INDEX == 4
 	.base = HI6220_UART3_BASE,
 #else
 #error "Unsuported console index value."
 #endif
 	.type = TYPE_PL011,
 	.clock = 19200000
 };

 U_BOOT_DEVICE(hikey_seriala) = {
 	.name = "serial_pl01x",
 	.platdata = &serial_platdata,
 };

 static struct mm_region hikey_mem_map[] = {
 	{
 		.base = 0x0UL,
 		.size = 0x80000000UL,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
 			 PTE_BLOCK_INNER_SHARE
 	}, {
 		.base = 0x80000000UL,
 		.size = 0x80000000UL,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
 			 PTE_BLOCK_NON_SHARE |
 			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
 	}, {
 		/* List terminator */
 		0,
 	}
 };

 struct mm_region *mem_map = hikey_mem_map;

 #ifdef CONFIG_BOARD_EARLY_INIT_F
 int board_uart_init(void)
 {
 	switch (CONFIG_CONS_INDEX) {
 	case 1:
 		hi6220_pinmux_config(PERIPH_ID_UART0);
 		break;
 	case 4:
 		hi6220_pinmux_config(PERIPH_ID_UART3);
 		break;
 	default:
 		debug("%s: Unsupported UART selected\n", __func__);
 		return -1;
 	}

 	return 0;
 }

 int board_early_init_f(void)
 {
 	board_uart_init();
 	return 0;
 }
 #endif

 struct peri_sc_periph_regs *peri_sc =
 	(struct peri_sc_periph_regs *)HI6220_PERI_BASE;

 struct alwayson_sc_regs *ao_sc =
 	(struct alwayson_sc_regs *)ALWAYSON_CTRL_BASE;

 /* status offset from enable reg */
 #define STAT_EN_OFF 0x2

 void hi6220_clk_enable(u32 bitfield, unsigned int *clk_base)
 {
 	uint32_t data;

 	data = readl(clk_base);
 	data |= bitfield;

 	writel(bitfield, clk_base);
 	do {
 		data = readl(clk_base + STAT_EN_OFF);
 	} while ((data & bitfield) == 0);
 }

 /* status offset from disable reg */
 #define STAT_DIS_OFF 0x1

 void hi6220_clk_disable(u32 bitfield, unsigned int *clk_base)
 {
 	uint32_t data;

 	data = readl(clk_base);
 	data |= bitfield;

 	writel(data, clk_base);
 	do {
 		data = readl(clk_base + STAT_DIS_OFF);
 	} while (data & bitfield);
 }

 #define EYE_PATTERN	0x70533483

 int board_usb_init(int index, enum usb_init_type init)
 {
 	unsigned int data;

 	/* enable USB clock */
 	hi6220_clk_enable(PERI_CLK0_USBOTG, &peri_sc->clk0_en);

 	/* take usb IPs out of reset */
 	writel(PERI_RST0_USBOTG_BUS | PERI_RST0_POR_PICOPHY |
 		PERI_RST0_USBOTG | PERI_RST0_USBOTG_32K,
 		&peri_sc->rst0_dis);
 	do {
 		data = readl(&peri_sc->rst0_stat);
 		data &= PERI_RST0_USBOTG_BUS | PERI_RST0_POR_PICOPHY |
 			PERI_RST0_USBOTG | PERI_RST0_USBOTG_32K;
 	} while (data);

 	/*CTRL 5*/
 	data = readl(&peri_sc->ctrl5);
 	data &= ~PERI_CTRL5_PICOPHY_BC_MODE;
 	data |= PERI_CTRL5_USBOTG_RES_SEL | PERI_CTRL5_PICOPHY_ACAENB;
 	data |= 0x300;
 	writel(data, &peri_sc->ctrl5);

 	/*CTRL 4*/

 	/* configure USB PHY */
 	data = readl(&peri_sc->ctrl4);

 	/* make PHY out of low power mode */
 	data &= ~PERI_CTRL4_PICO_SIDDQ;
 	data &= ~PERI_CTRL4_PICO_OGDISABLE;
 	data |= PERI_CTRL4_PICO_VBUSVLDEXTSEL | PERI_CTRL4_PICO_VBUSVLDEXT;
 	writel(data, &peri_sc->ctrl4);

 	writel(EYE_PATTERN, &peri_sc->ctrl8);

 	mdelay(5);
 	return 0;
 }

 static int config_sd_carddetect(void)
 {
 	int ret;

 	/* configure GPIO8 as nopull */
 	writel(0, 0xf8001830);

 	gpio_request(8, "SD CD");

 	gpio_direction_input(8);
 	ret = gpio_get_value(8);

 	if (!ret) {
 		printf("%s: SD card present\n", __func__);
 		return 1;
 	}

 	printf("%s: SD card not present\n", __func__);
 	return 0;
 }


 static void mmc1_init_pll(void)
 {
 	uint32_t data;

 	/* select SYSPLL as the source of MMC1 */
 	/* select SYSPLL as the source of MUX1 (SC_CLK_SEL0) */
 	writel(1 << 11 | 1 << 27, &peri_sc->clk0_sel);
 	do {
 		data = readl(&peri_sc->clk0_sel);
 	} while (!(data & (1 << 11)));

 	/* select MUX1 as the source of MUX2 (SC_CLK_SEL0) */
 	writel(1 << 30, &peri_sc->clk0_sel);
 	do {
 		data = readl(&peri_sc->clk0_sel);
 	} while (data & (1 << 14));

 	hi6220_clk_enable(PERI_CLK0_MMC1, &peri_sc->clk0_en);

 	hi6220_clk_enable(PERI_CLK12_MMC1_SRC, &peri_sc->clk12_en);

 	do {
 		/* 1.2GHz / 50 = 24MHz */
 		writel(0x31 | (1 << 7), &peri_sc->clkcfg8bit2);
 		data = readl(&peri_sc->clkcfg8bit2);
 	} while ((data & 0x31) != 0x31);
 }

 static void mmc1_reset_clk(void)
 {
 	unsigned int data;

 	/* disable mmc1 bus clock */
 	hi6220_clk_disable(PERI_CLK0_MMC1, &peri_sc->clk0_dis);

 	/* enable mmc1 bus clock */
 	hi6220_clk_enable(PERI_CLK0_MMC1, &peri_sc->clk0_en);

 	/* reset mmc1 clock domain */
 	writel(PERI_RST0_MMC1, &peri_sc->rst0_en);

 	/* bypass mmc1 clock phase */
 	data = readl(&peri_sc->ctrl2);
 	data |= 3 << 2;
 	writel(data, &peri_sc->ctrl2);

 	/* disable low power */
 	data = readl(&peri_sc->ctrl13);
 	data |= 1 << 4;
 	writel(data, &peri_sc->ctrl13);
 	do {
 		data = readl(&peri_sc->rst0_stat);
 	} while (!(data & PERI_RST0_MMC1));

 	/* unreset mmc0 clock domain */
 	writel(PERI_RST0_MMC1, &peri_sc->rst0_dis);
 	do {
 		data = readl(&peri_sc->rst0_stat);
 	} while (data & PERI_RST0_MMC1);
 }

 /* PMU SSI is the IP that maps the external PMU hi6553 registers as IO */
 static void hi6220_pmussi_init(void)
 {
 	uint32_t data;

 	/* Take PMUSSI out of reset */
 	writel(ALWAYSON_SC_PERIPH_RST4_DIS_PRESET_PMUSSI_N,
 	       &ao_sc->rst4_dis);
 	do {
 		data = readl(&ao_sc->rst4_stat);
 	} while (data & ALWAYSON_SC_PERIPH_RST4_DIS_PRESET_PMUSSI_N);

 	/* set PMU SSI clock latency for read operation */
 	data = readl(&ao_sc->mcu_subsys_ctrl3);
 	data &= ~ALWAYSON_SC_MCU_SUBSYS_CTRL3_RCLK_MASK;
 	data |= ALWAYSON_SC_MCU_SUBSYS_CTRL3_RCLK_3;
 	writel(data, &ao_sc->mcu_subsys_ctrl3);

 	/* enable PMUSSI clock */
 	data = ALWAYSON_SC_PERIPH_CLK5_EN_PCLK_PMUSSI_CCPU |
 	       ALWAYSON_SC_PERIPH_CLK5_EN_PCLK_PMUSSI_MCU;

 	hi6220_clk_enable(data, &ao_sc->clk5_en);

 	/* Output high to PMIC on PWR_HOLD_GPIO0_0 */
 	gpio_request(0, "PWR_HOLD_GPIO0_0");
 	gpio_direction_output(0, 1);
 }

 int misc_init_r(void)
 {
 	return 0;
 }

 int board_init(void)
 {
 	return 0;
 }

 #ifdef CONFIG_GENERIC_MMC

 static int init_dwmmc(void)
 {
 	int ret;

 #ifdef CONFIG_DWMMC

 	/* mmc0 clocks are already configured by ATF */
 	ret = hi6220_pinmux_config(PERIPH_ID_SDMMC0);
 	if (ret)
 		printf("%s: Error configuring pinmux for eMMC (%d)\n"
 			, __func__, ret);

 	ret |= hi6220_dwmci_add_port(0, HI6220_MMC0_BASE, 8);
 	if (ret)
 		printf("%s: Error adding eMMC port (%d)\n", __func__, ret);


 	/* take mmc1 (sd slot) out of reset, configure clocks and pinmuxing */
 	mmc1_init_pll();
 	mmc1_reset_clk();

 	ret |= hi6220_pinmux_config(PERIPH_ID_SDMMC1);
 	if (ret)
 		printf("%s: Error configuring pinmux for eMMC (%d)\n"
 			, __func__, ret);

 	config_sd_carddetect();

 	ret |= hi6220_dwmci_add_port(1, HI6220_MMC1_BASE, 4);
 	if (ret)
 		printf("%s: Error adding SD port (%d)\n", __func__, ret);

 #endif
 	return ret;
 }

 /* setup board specific PMIC */
 int power_init_board(void)
 {
 	/* init the hi6220 pmussi ip */
 	hi6220_pmussi_init();

 	power_hi6553_init((u8 *)HI6220_PMUSSI_BASE);

 	return 0;
 }

 int board_mmc_init(bd_t *bis)
 {
 	int ret;

 	/* add the eMMC and sd ports */
 	ret = init_dwmmc();

 	if (ret)
 		debug("init_dwmmc failed\n");

 	return ret;
 }
 #endif

 int dram_init(void)
 {
 	gd->ram_size = PHYS_SDRAM_1_SIZE;
 	return 0;
 }

 void dram_init_banksize(void)
 {
 	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
 }

 /* Use the Watchdog to cause reset */
 void reset_cpu(ulong addr)
 {
 	/* TODO program the watchdog */
 }
	/*
	* (C) Copyright 2015 Linaro
	* Peter Griffin <peter.griffin@linaro.org>
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/
	#include <common.h>
	#include <dm.h>
	#include <dm/platform_data/serial_pl01x.h>
	#include <errno.h>
	#include <malloc.h>
	#include <netdev.h>
	#include <asm/io.h>
	#include <usb.h>
	#include <power/hi6553_pmic.h>
	#include <asm-generic/gpio.h>
	#include <asm/arch/dwmmc.h>
	#include <asm/arch/gpio.h>
	#include <asm/arch/periph.h>
	#include <asm/arch/pinmux.h>
	#include <asm/arch/hi6220.h>
	#include <asm/armv8/mmu.h>

	/TODO drop this table in favour of device tree /
	static const struct hikey_gpio_platdata hi6220_gpio[] = {
	{ 0, HI6220_GPIO_BASE(0)},
	{ 1, HI6220_GPIO_BASE(1)},
	{ 2, HI6220_GPIO_BASE(2)},
	{ 3, HI6220_GPIO_BASE(3)},
	{ 4, HI6220_GPIO_BASE(4)},
	{ 5, HI6220_GPIO_BASE(5)},
	{ 6, HI6220_GPIO_BASE(6)},
	{ 7, HI6220_GPIO_BASE(7)},
	{ 8, HI6220_GPIO_BASE(8)},
	{ 9, HI6220_GPIO_BASE(9)},
	{ 10, HI6220_GPIO_BASE(10)},
	{ 11, HI6220_GPIO_BASE(11)},
	{ 12, HI6220_GPIO_BASE(12)},
	{ 13, HI6220_GPIO_BASE(13)},
	{ 14, HI6220_GPIO_BASE(14)},
	{ 15, HI6220_GPIO_BASE(15)},
	{ 16, HI6220_GPIO_BASE(16)},
	{ 17, HI6220_GPIO_BASE(17)},
	{ 18, HI6220_GPIO_BASE(18)},
	{ 19, HI6220_GPIO_BASE(19)},

	};

	U_BOOT_DEVICES(hi6220_gpios) = {
	{ "gpio_hi6220", &hi6220_gpio[0] },
	{ "gpio_hi6220", &hi6220_gpio[1] },
	{ "gpio_hi6220", &hi6220_gpio[2] },
	{ "gpio_hi6220", &hi6220_gpio[3] },
	{ "gpio_hi6220", &hi6220_gpio[4] },
	{ "gpio_hi6220", &hi6220_gpio[5] },
	{ "gpio_hi6220", &hi6220_gpio[6] },
	{ "gpio_hi6220", &hi6220_gpio[7] },
	{ "gpio_hi6220", &hi6220_gpio[8] },
	{ "gpio_hi6220", &hi6220_gpio[9] },
	{ "gpio_hi6220", &hi6220_gpio[10] },
	{ "gpio_hi6220", &hi6220_gpio[11] },
	{ "gpio_hi6220", &hi6220_gpio[12] },
	{ "gpio_hi6220", &hi6220_gpio[13] },
	{ "gpio_hi6220", &hi6220_gpio[14] },
	{ "gpio_hi6220", &hi6220_gpio[15] },
	{ "gpio_hi6220", &hi6220_gpio[16] },
	{ "gpio_hi6220", &hi6220_gpio[17] },
	{ "gpio_hi6220", &hi6220_gpio[18] },
	{ "gpio_hi6220", &hi6220_gpio[19] },
	};

	DECLARE_GLOBAL_DATA_PTR;

	static const struct pl01x_serial_platdata serial_platdata = {
	#if CONFIG_CONS_INDEX == 1
	.base = HI6220_UART0_BASE,
	#elif CONFIG_CONS_INDEX == 4
	.base = HI6220_UART3_BASE,
	#else
	#error "Unsuported console index value."
	#endif
	.type = TYPE_PL011,
	.clock = 19200000
	};

	U_BOOT_DEVICE(hikey_seriala) = {
	.name = "serial_pl01x",
	.platdata = &serial_platdata,
	};

	static struct mm_region hikey_mem_map[] = {
	{
	.base = 0x0UL,
	.size = 0x80000000UL,
	.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) \|
	PTE_BLOCK_INNER_SHARE
	}, {
	.base = 0x80000000UL,
	.size = 0x80000000UL,
	.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) \|
	PTE_BLOCK_NON_SHARE \|
	PTE_BLOCK_PXN \| PTE_BLOCK_UXN
	}, {
	/* List terminator */
	0,
	}
	};

	struct mm_region *mem_map = hikey_mem_map;

	#ifdef CONFIG_BOARD_EARLY_INIT_F
	int board_uart_init(void)
	{
	switch (CONFIG_CONS_INDEX) {
	case 1:
	hi6220_pinmux_config(PERIPH_ID_UART0);
	break;
	case 4:
	hi6220_pinmux_config(PERIPH_ID_UART3);
	break;
	default:
	debug("%s: Unsupported UART selected\n", __func__);
	return -1;
	}

	return 0;
	}

	int board_early_init_f(void)
	{
	board_uart_init();
	return 0;
	}
	#endif

	struct peri_sc_periph_regs *peri_sc =
	(struct peri_sc_periph_regs *)HI6220_PERI_BASE;

	struct alwayson_sc_regs *ao_sc =
	(struct alwayson_sc_regs *)ALWAYSON_CTRL_BASE;

	/* status offset from enable reg */
	#define STAT_EN_OFF 0x2

	void hi6220_clk_enable(u32 bitfield, unsigned int *clk_base)
	{
	uint32_t data;

	data = readl(clk_base);
	data \|= bitfield;

	writel(bitfield, clk_base);
	do {
	data = readl(clk_base + STAT_EN_OFF);
	} while ((data & bitfield) == 0);
	}

	/* status offset from disable reg */
	#define STAT_DIS_OFF 0x1

	void hi6220_clk_disable(u32 bitfield, unsigned int *clk_base)
	{
	uint32_t data;

	data = readl(clk_base);
	data \|= bitfield;

	writel(data, clk_base);
	do {
	data = readl(clk_base + STAT_DIS_OFF);
	} while (data & bitfield);
	}

	#define EYE_PATTERN 0x70533483

	int board_usb_init(int index, enum usb_init_type init)
	{
	unsigned int data;

	/* enable USB clock */
	hi6220_clk_enable(PERI_CLK0_USBOTG, &peri_sc->clk0_en);

	/* take usb IPs out of reset */
	writel(PERI_RST0_USBOTG_BUS \| PERI_RST0_POR_PICOPHY \|
	PERI_RST0_USBOTG \| PERI_RST0_USBOTG_32K,
	&peri_sc->rst0_dis);
	do {
	data = readl(&peri_sc->rst0_stat);
	data &= PERI_RST0_USBOTG_BUS \| PERI_RST0_POR_PICOPHY \|
	PERI_RST0_USBOTG \| PERI_RST0_USBOTG_32K;
	} while (data);

	/CTRL 5/
	data = readl(&peri_sc->ctrl5);
	data &= ~PERI_CTRL5_PICOPHY_BC_MODE;
	data \|= PERI_CTRL5_USBOTG_RES_SEL \| PERI_CTRL5_PICOPHY_ACAENB;
	data \|= 0x300;
	writel(data, &peri_sc->ctrl5);

	/CTRL 4/

	/* configure USB PHY */
	data = readl(&peri_sc->ctrl4);

	/* make PHY out of low power mode */
	data &= ~PERI_CTRL4_PICO_SIDDQ;
	data &= ~PERI_CTRL4_PICO_OGDISABLE;
	data \|= PERI_CTRL4_PICO_VBUSVLDEXTSEL \| PERI_CTRL4_PICO_VBUSVLDEXT;
	writel(data, &peri_sc->ctrl4);

	writel(EYE_PATTERN, &peri_sc->ctrl8);

	mdelay(5);
	return 0;
	}

	static int config_sd_carddetect(void)
	{
	int ret;

	/* configure GPIO8 as nopull */
	writel(0, 0xf8001830);

	gpio_request(8, "SD CD");

	gpio_direction_input(8);
	ret = gpio_get_value(8);

	if (!ret) {
	printf("%s: SD card present\n", __func__);
	return 1;
	}

	printf("%s: SD card not present\n", __func__);
	return 0;
	}


	static void mmc1_init_pll(void)
	{
	uint32_t data;

	/* select SYSPLL as the source of MMC1 */
	/* select SYSPLL as the source of MUX1 (SC_CLK_SEL0) */
	writel(1 << 11 \| 1 << 27, &peri_sc->clk0_sel);
	do {
	data = readl(&peri_sc->clk0_sel);
	} while (!(data & (1 << 11)));

	/* select MUX1 as the source of MUX2 (SC_CLK_SEL0) */
	writel(1 << 30, &peri_sc->clk0_sel);
	do {
	data = readl(&peri_sc->clk0_sel);
	} while (data & (1 << 14));

	hi6220_clk_enable(PERI_CLK0_MMC1, &peri_sc->clk0_en);

	hi6220_clk_enable(PERI_CLK12_MMC1_SRC, &peri_sc->clk12_en);

	do {
	/* 1.2GHz / 50 = 24MHz */
	writel(0x31 \| (1 << 7), &peri_sc->clkcfg8bit2);
	data = readl(&peri_sc->clkcfg8bit2);
	} while ((data & 0x31) != 0x31);
	}

	static void mmc1_reset_clk(void)
	{
	unsigned int data;

	/* disable mmc1 bus clock */
	hi6220_clk_disable(PERI_CLK0_MMC1, &peri_sc->clk0_dis);

	/* enable mmc1 bus clock */
	hi6220_clk_enable(PERI_CLK0_MMC1, &peri_sc->clk0_en);

	/* reset mmc1 clock domain */
	writel(PERI_RST0_MMC1, &peri_sc->rst0_en);

	/* bypass mmc1 clock phase */
	data = readl(&peri_sc->ctrl2);
	data \|= 3 << 2;
	writel(data, &peri_sc->ctrl2);

	/* disable low power */
	data = readl(&peri_sc->ctrl13);
	data \|= 1 << 4;
	writel(data, &peri_sc->ctrl13);
	do {
	data = readl(&peri_sc->rst0_stat);
	} while (!(data & PERI_RST0_MMC1));

	/* unreset mmc0 clock domain */
	writel(PERI_RST0_MMC1, &peri_sc->rst0_dis);
	do {
	data = readl(&peri_sc->rst0_stat);
	} while (data & PERI_RST0_MMC1);
	}

	/* PMU SSI is the IP that maps the external PMU hi6553 registers as IO */
	static void hi6220_pmussi_init(void)
	{
	uint32_t data;

	/* Take PMUSSI out of reset */
	writel(ALWAYSON_SC_PERIPH_RST4_DIS_PRESET_PMUSSI_N,
	&ao_sc->rst4_dis);
	do {
	data = readl(&ao_sc->rst4_stat);
	} while (data & ALWAYSON_SC_PERIPH_RST4_DIS_PRESET_PMUSSI_N);

	/* set PMU SSI clock latency for read operation */
	data = readl(&ao_sc->mcu_subsys_ctrl3);
	data &= ~ALWAYSON_SC_MCU_SUBSYS_CTRL3_RCLK_MASK;
	data \|= ALWAYSON_SC_MCU_SUBSYS_CTRL3_RCLK_3;
	writel(data, &ao_sc->mcu_subsys_ctrl3);

	/* enable PMUSSI clock */
	data = ALWAYSON_SC_PERIPH_CLK5_EN_PCLK_PMUSSI_CCPU \|
	ALWAYSON_SC_PERIPH_CLK5_EN_PCLK_PMUSSI_MCU;

	hi6220_clk_enable(data, &ao_sc->clk5_en);

	/* Output high to PMIC on PWR_HOLD_GPIO0_0 */
	gpio_request(0, "PWR_HOLD_GPIO0_0");
	gpio_direction_output(0, 1);
	}

	int misc_init_r(void)
	{
	return 0;
	}

	int board_init(void)
	{
	return 0;
	}

	#ifdef CONFIG_GENERIC_MMC

	static int init_dwmmc(void)
	{
	int ret;

	#ifdef CONFIG_DWMMC

	/* mmc0 clocks are already configured by ATF */
	ret = hi6220_pinmux_config(PERIPH_ID_SDMMC0);
	if (ret)
	printf("%s: Error configuring pinmux for eMMC (%d)\n"
	, __func__, ret);

	ret \|= hi6220_dwmci_add_port(0, HI6220_MMC0_BASE, 8);
	if (ret)
	printf("%s: Error adding eMMC port (%d)\n", __func__, ret);


	/* take mmc1 (sd slot) out of reset, configure clocks and pinmuxing */
	mmc1_init_pll();
	mmc1_reset_clk();

	ret \|= hi6220_pinmux_config(PERIPH_ID_SDMMC1);
	if (ret)
	printf("%s: Error configuring pinmux for eMMC (%d)\n"
	, __func__, ret);

	config_sd_carddetect();

	ret \|= hi6220_dwmci_add_port(1, HI6220_MMC1_BASE, 4);
	if (ret)
	printf("%s: Error adding SD port (%d)\n", __func__, ret);

	#endif
	return ret;
	}

	/* setup board specific PMIC */
	int power_init_board(void)
	{
	/* init the hi6220 pmussi ip */
	hi6220_pmussi_init();

	power_hi6553_init((u8 *)HI6220_PMUSSI_BASE);

	return 0;
	}

	int board_mmc_init(bd_t *bis)
	{
	int ret;

	/* add the eMMC and sd ports */
	ret = init_dwmmc();

	if (ret)
	debug("init_dwmmc failed\n");

	return ret;
	}
	#endif

	int dram_init(void)
	{
	gd->ram_size = PHYS_SDRAM_1_SIZE;
	return 0;
	}

	void dram_init_banksize(void)
	{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
	}

	/* Use the Watchdog to cause reset */
	void reset_cpu(ulong addr)
	{
	/* TODO program the watchdog */
	}