uboot-vybrid_public/board/qi/qi_lb60/qi_lb60.c

/*
 * Authors: Xiangfu Liu <xiangfu@sharism.cc>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 3 of the License, or (at your option) any later version.
 */

#include <common.h>
#include <asm/io.h>
#include <asm/jz4740.h>

DECLARE_GLOBAL_DATA_PTR;

static void gpio_init(void)
{
	unsigned int i;

	/* Initialize NAND Flash Pins */
	__gpio_as_nand();

	/* Initialize SDRAM pins */
	__gpio_as_sdram_16bit_4720();

	/* Initialize LCD pins */
	__gpio_as_lcd_18bit();

	/* Initialize MSC pins */
	__gpio_as_msc();

	/* Initialize Other pins */
	for (i = 0; i < 7; i++) {
		__gpio_as_input(GPIO_KEYIN_BASE + i);
		__gpio_enable_pull(GPIO_KEYIN_BASE + i);
	}

	for (i = 0; i < 8; i++) {
		__gpio_as_output(GPIO_KEYOUT_BASE + i);
		__gpio_clear_pin(GPIO_KEYOUT_BASE + i);
	}

	__gpio_as_input(GPIO_KEYIN_8);
	__gpio_enable_pull(GPIO_KEYIN_8);

	/* enable the TP4, TP5 as UART0 */
	__gpio_jtag_to_uart0();

	__gpio_as_output(GPIO_AUDIO_POP);
	__gpio_set_pin(GPIO_AUDIO_POP);

	__gpio_as_output(GPIO_LCD_CS);
	__gpio_clear_pin(GPIO_LCD_CS);

	__gpio_as_output(GPIO_AMP_EN);
	__gpio_clear_pin(GPIO_AMP_EN);

	__gpio_as_output(GPIO_SDPW_EN);
	__gpio_disable_pull(GPIO_SDPW_EN);
	__gpio_clear_pin(GPIO_SDPW_EN);

	__gpio_as_input(GPIO_SD_DETECT);
	__gpio_disable_pull(GPIO_SD_DETECT);

	__gpio_as_input(GPIO_USB_DETECT);
	__gpio_enable_pull(GPIO_USB_DETECT);
}

static void cpm_init(void)
{
	struct jz4740_cpm *cpm = (struct jz4740_cpm *)JZ4740_CPM_BASE;
	uint32_t reg = readl(&cpm->clkgr);

	reg |=	CPM_CLKGR_IPU |
		CPM_CLKGR_CIM |
		CPM_CLKGR_I2C |
		CPM_CLKGR_SSI |
		CPM_CLKGR_UART1 |
		CPM_CLKGR_SADC |
		CPM_CLKGR_UHC |
		CPM_CLKGR_UDC |
		CPM_CLKGR_AIC1;

	writel(reg, &cpm->clkgr);
}

int board_early_init_f(void)
{
	gpio_init();
	cpm_init();
	calc_clocks();	/* calc the clocks */
	rtc_init();	/* init rtc on any reset */

	return 0;
}

/* U-Boot common routines */
int checkboard(void)
{
	printf("Board: Qi LB60 (Ingenic XBurst Jz4740 SoC, Speed %ld MHz)\n",
	       gd->cpu_clk / 1000000);

	return 0;
}