1 /*
2 * WORK Microwave work_92105 board support
3 *
4 * (C) Copyright 2014 DENX Software Engineering GmbH
5 * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
6 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */
9
10 #include <common.h>
11 #include <asm/io.h>
12 #include <asm/arch/sys_proto.h>
13 #include <asm/arch/cpu.h>
14 #include <asm/arch/clk.h>
15 #include <asm/arch/emc.h>
16 #include <asm/arch/wdt.h>
17 #include <asm/gpio.h>
18 #include <spl.h>
19 #include "work_92105_display.h"
20
21 DECLARE_GLOBAL_DATA_PTR;
22
23 static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE;
24 static struct wdt_regs *wdt = (struct wdt_regs *)WDT_BASE;
25
reset_periph(void)26 void reset_periph(void)
27 {
28 setbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
29 writel(WDTIM_MCTRL_RESFRC1, &wdt->mctrl);
30 udelay(150);
31 writel(0, &wdt->mctrl);
32 clrbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
33 }
34
board_early_init_f(void)35 int board_early_init_f(void)
36 {
37 /* initialize serial port for console */
38 lpc32xx_uart_init(CONFIG_SYS_LPC32XX_UART);
39 /* enable I2C, SSP, MAC, NAND */
40 lpc32xx_i2c_init(1); /* only I2C1 has devices, I2C2 has none */
41 lpc32xx_ssp_init();
42 lpc32xx_mac_init();
43 lpc32xx_mlc_nand_init();
44 /* Display must wait until after relocation and devices init */
45 return 0;
46 }
47
48 #define GPO_19 115
49
board_early_init_r(void)50 int board_early_init_r(void)
51 {
52 /* Set NAND !WP to 1 through GPO_19 */
53 gpio_request(GPO_19, "NAND_nWP");
54 gpio_direction_output(GPO_19, 1);
55
56 /* initialize display */
57 work_92105_display_init();
58
59 return 0;
60 }
61
board_init(void)62 int board_init(void)
63 {
64 reset_periph();
65 /* adress of boot parameters */
66 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
67
68 return 0;
69 }
70
dram_init(void)71 int dram_init(void)
72 {
73 gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
74 CONFIG_SYS_SDRAM_SIZE);
75
76 return 0;
77 }
78