1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2018
4 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
5 */
6
7 #include <common.h>
8 #include <init.h>
9 #include <asm/io.h>
10 #include <asm/arch/imx-regs.h>
11 #include <asm/arch/sys_proto.h>
12 #include <asm/arch/crm_regs.h>
13 #include <asm/arch/clock.h>
14 #include <asm/arch/iomux-mx53.h>
15 #include <asm/arch/clock.h>
16 #include <asm/gpio.h>
17 #include <env.h>
18 #include <power/pmic.h>
19 #include <fsl_pmic.h>
20 #include "kp_id_rev.h"
21
22 #define BOOSTER_OFF IMX_GPIO_NR(2, 23)
23 #define LCD_BACKLIGHT IMX_GPIO_NR(1, 1)
24 #define KEY1 IMX_GPIO_NR(2, 26)
25
26 DECLARE_GLOBAL_DATA_PTR;
27
dram_init(void)28 int dram_init(void)
29 {
30 u32 size;
31
32 size = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
33 gd->ram_size = size;
34
35 return 0;
36 }
37
dram_init_banksize(void)38 int dram_init_banksize(void)
39 {
40 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
41 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
42
43 return 0;
44 }
45
power_init(void)46 static int power_init(void)
47 {
48 struct udevice *dev;
49 int ret;
50
51 ret = pmic_get("mc34708", &dev);
52 if (ret) {
53 printf("%s: mc34708 not found !\n", __func__);
54 return ret;
55 }
56
57 /* Set VDDGP to 1.110V for 800 MHz on SW1 */
58 pmic_clrsetbits(dev, REG_SW_0, SWx_VOLT_MASK_MC34708,
59 SWx_1_110V_MC34708);
60
61 /* Set VCC as 1.30V on SW2 */
62 pmic_clrsetbits(dev, REG_SW_1, SWx_VOLT_MASK_MC34708,
63 SWx_1_300V_MC34708);
64
65 /* Set global reset timer to 4s */
66 pmic_clrsetbits(dev, REG_POWER_CTL2, TIMER_MASK_MC34708,
67 TIMER_4S_MC34708);
68
69 return ret;
70 }
71
setup_clocks(void)72 static void setup_clocks(void)
73 {
74 int ret;
75 u32 ref_clk = MXC_HCLK;
76 /*
77 * CPU clock set to 800MHz and DDR to 400MHz
78 */
79 ret = mxc_set_clock(ref_clk, 800, MXC_ARM_CLK);
80 if (ret)
81 printf("CPU: Switch CPU clock to 800MHZ failed\n");
82
83 ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK);
84 ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK);
85 if (ret)
86 printf("CPU: Switch DDR clock to 400MHz failed\n");
87 }
88
setup_ups(void)89 static void setup_ups(void)
90 {
91 gpio_request(BOOSTER_OFF, "BOOSTER_OFF");
92 gpio_direction_output(BOOSTER_OFF, 0);
93 }
94
board_early_init_f(void)95 int board_early_init_f(void)
96 {
97 return 0;
98 }
99
100 /*
101 * Do not overwrite the console
102 * Use always serial for U-Boot console
103 */
overwrite_console(void)104 int overwrite_console(void)
105 {
106 return 1;
107 }
108
board_init(void)109 int board_init(void)
110 {
111 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
112
113 return 0;
114 }
115
board_disable_display(void)116 void board_disable_display(void)
117 {
118 gpio_request(LCD_BACKLIGHT, "LCD_BACKLIGHT");
119 gpio_direction_output(LCD_BACKLIGHT, 0);
120 }
121
board_misc_setup(void)122 void board_misc_setup(void)
123 {
124 gpio_request(KEY1, "KEY1_GPIO");
125 gpio_direction_input(KEY1);
126
127 if (gpio_get_value(KEY1))
128 env_set("key1", "off");
129 else
130 env_set("key1", "on");
131 }
132
board_late_init(void)133 int board_late_init(void)
134 {
135 int ret = 0;
136
137 board_disable_display();
138 setup_ups();
139
140 if (!power_init())
141 setup_clocks();
142
143 ret = read_eeprom();
144 if (ret)
145 printf("Error %d reading EEPROM content!\n", ret);
146
147 show_eeprom();
148 read_board_id();
149
150 board_misc_setup();
151
152 return ret;
153 }
154