1 // SPDX-License-Identifier: GPL-2.0+
2
3 #include <common.h>
4 #include <cpu_func.h>
5 #include <hang.h>
6 #include <init.h>
7 #include <log.h>
8 #include <spl.h>
9 #include <asm/global_data.h>
10 #include <asm/io.h>
11 #include <asm/mach-imx/iomux-v3.h>
12 #include <asm/arch/clock.h>
13 #include <asm/arch/imx8mm_pins.h>
14 #include <asm/arch/sys_proto.h>
15 #include <asm/mach-imx/boot_mode.h>
16 #include <asm/arch/ddr.h>
17
18 #include <dm/uclass.h>
19 #include <dm/device.h>
20 #include <dm/uclass-internal.h>
21 #include <dm/device-internal.h>
22
23 #include <power/pmic.h>
24 #include <power/bd71837.h>
25
26 DECLARE_GLOBAL_DATA_PTR;
27
spl_board_boot_device(enum boot_device boot_dev_spl)28 int spl_board_boot_device(enum boot_device boot_dev_spl)
29 {
30 switch (boot_dev_spl) {
31 case SD2_BOOT:
32 case MMC2_BOOT:
33 return BOOT_DEVICE_MMC1;
34 case SD3_BOOT:
35 case MMC3_BOOT:
36 return BOOT_DEVICE_MMC2;
37 case USB_BOOT:
38 return BOOT_DEVICE_BOARD;
39 default:
40 return BOOT_DEVICE_NONE;
41 }
42 }
43
spl_dram_init(void)44 static void spl_dram_init(void)
45 {
46 ddr_init(&dram_timing);
47 }
48
49 #ifdef CONFIG_SPL_LOAD_FIT
board_fit_config_name_match(const char * name)50 int board_fit_config_name_match(const char *name)
51 {
52 /* Just empty function now - can't decide what to choose */
53 debug("%s: %s\n", __func__, name);
54
55 return 0;
56 }
57 #endif
58
power_init_board(void)59 static int power_init_board(void)
60 {
61 struct udevice *dev;
62 int ret;
63
64 ret = pmic_get("pmic@4b", &dev);
65 if (ret == -ENODEV) {
66 puts("No pmic\n");
67 return 0;
68 }
69 if (ret != 0)
70 return ret;
71
72 /* decrease RESET key long push time from the default 10s to 10ms */
73 pmic_reg_write(dev, BD718XX_PWRONCONFIG1, 0x0);
74
75 /* unlock the PMIC regs */
76 pmic_reg_write(dev, BD718XX_REGLOCK, 0x1);
77
78 /* increase VDD_SOC to typical value 0.85v before first DRAM access */
79 pmic_reg_write(dev, BD718XX_BUCK1_VOLT_RUN, 0x0f);
80
81 /* increase VDD_DRAM to 0.975v for 3Ghz DDR */
82 pmic_reg_write(dev, BD718XX_1ST_NODVS_BUCK_VOLT, 0x83);
83
84 /* lock the PMIC regs */
85 pmic_reg_write(dev, BD718XX_REGLOCK, 0x11);
86
87 return 0;
88 }
89
board_init_f(ulong dummy)90 void board_init_f(ulong dummy)
91 {
92 struct udevice *dev;
93 int ret;
94
95 arch_cpu_init();
96
97 init_uart_clk(1);
98
99 timer_init();
100
101 /* Clear the BSS. */
102 memset(__bss_start, 0, __bss_end - __bss_start);
103
104 ret = spl_early_init();
105 if (ret) {
106 debug("spl_early_init() failed: %d\n", ret);
107 hang();
108 }
109
110 preloader_console_init();
111
112 ret = uclass_get_device_by_name(UCLASS_CLK,
113 "clock-controller@30380000",
114 &dev);
115 if (ret < 0) {
116 printf("Failed to find clock node. Check device tree\n");
117 hang();
118 }
119
120 enable_tzc380();
121
122 power_init_board();
123
124 /* DDR initialization */
125 spl_dram_init();
126
127 board_init_r(NULL, 0);
128 }
129