1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Embest/Timll DevKit3250 board support
4  *
5  * Copyright (C) 2011-2015 Vladimir Zapolskiy <vz@mleia.com>
6  */
7 
8 #include <common.h>
9 #include <asm/arch/sys_proto.h>
10 #include <asm/arch/clk.h>
11 #include <asm/arch/cpu.h>
12 #include <asm/arch/emc.h>
13 #include <asm/arch/wdt.h>
14 #include <asm/io.h>
15 
16 DECLARE_GLOBAL_DATA_PTR;
17 
18 static struct emc_regs *emc = (struct emc_regs *)EMC_BASE;
19 static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE;
20 static struct wdt_regs *wdt = (struct wdt_regs *)WDT_BASE;
21 
22 void reset_periph(void)
23 {
24 	/* This function resets peripherals by triggering RESOUT_N */
25 	setbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
26 	writel(WDTIM_MCTRL_RESFRC1, &wdt->mctrl);
27 	udelay(300);
28 
29 	writel(0, &wdt->mctrl);
30 	clrbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
31 
32 	/* Such a long delay is needed to initialize SMSC phy */
33 	udelay(10000);
34 }
35 
36 int board_early_init_f(void)
37 {
38 	lpc32xx_uart_init(CONFIG_SYS_LPC32XX_UART);
39 	lpc32xx_i2c_init(1);
40 	lpc32xx_i2c_init(2);
41 	lpc32xx_ssp_init();
42 	lpc32xx_mac_init();
43 
44 	/*
45 	 * nWP may be controlled by GPO19, but unpopulated by default R23
46 	 * makes no sense to configure this GPIO level, nWP is always high
47 	 */
48 	lpc32xx_slc_nand_init();
49 
50 	return 0;
51 }
52 
53 int board_init(void)
54 {
55 	/* adress of boot parameters */
56 	gd->bd->bi_boot_params  = CONFIG_SYS_SDRAM_BASE + 0x100;
57 
58 #ifdef CONFIG_SYS_FLASH_CFI
59 	/* Use 16-bit memory interface for NOR Flash */
60 	emc->stat[0].config	= EMC_STAT_CONFIG_PB | EMC_STAT_CONFIG_16BIT;
61 
62 	/* Change the NOR timings to optimum value to get maximum bandwidth */
63 	emc->stat[0].waitwen	= EMC_STAT_WAITWEN(1);
64 	emc->stat[0].waitoen	= EMC_STAT_WAITOEN(0);
65 	emc->stat[0].waitrd	= EMC_STAT_WAITRD(12);
66 	emc->stat[0].waitpage	= EMC_STAT_WAITPAGE(12);
67 	emc->stat[0].waitwr	= EMC_STAT_WAITWR(5);
68 	emc->stat[0].waitturn	= EMC_STAT_WAITTURN(2);
69 #endif
70 
71 	return 0;
72 }
73 
74 int dram_init(void)
75 {
76 	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
77 				    CONFIG_SYS_SDRAM_SIZE);
78 
79 	return 0;
80 }
81