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