1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2018 NXP
4 */
5
6 #include <cpu_func.h>
7 #include <env.h>
8 #include <errno.h>
9 #include <init.h>
10 #include <asm/global_data.h>
11 #include <linux/libfdt.h>
12 #include <fdt_support.h>
13 #include <asm/io.h>
14 #include <asm/gpio.h>
15 #include <asm/arch/clock.h>
16 #include <firmware/imx/sci/sci.h>
17 #include <asm/arch/imx8-pins.h>
18 #include <asm/arch/iomux.h>
19 #include <asm/arch/sys_proto.h>
20
21 DECLARE_GLOBAL_DATA_PTR;
22
23 #define UART_PAD_CTRL ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
24 (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
25 (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
26 (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
27
28 static iomux_cfg_t uart0_pads[] = {
29 SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
30 SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
31 };
32
setup_iomux_uart(void)33 static void setup_iomux_uart(void)
34 {
35 imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
36 }
37
board_early_init_f(void)38 int board_early_init_f(void)
39 {
40 sc_pm_clock_rate_t rate = SC_80MHZ;
41 int ret;
42
43 /* Set UART0 clock root to 80 MHz */
44 ret = sc_pm_setup_uart(SC_R_UART_0, rate);
45 if (ret)
46 return ret;
47
48 setup_iomux_uart();
49
50 sc_pm_set_resource_power_mode(-1, SC_R_GPIO_5, SC_PM_PW_MODE_ON);
51
52 return 0;
53 }
54
55 #if CONFIG_IS_ENABLED(DM_GPIO)
board_gpio_init(void)56 static void board_gpio_init(void)
57 {
58 /* TODO */
59 }
60 #else
board_gpio_init(void)61 static inline void board_gpio_init(void) {}
62 #endif
63
64 #if IS_ENABLED(CONFIG_FEC_MXC)
65 #include <miiphy.h>
66
board_phy_config(struct phy_device * phydev)67 int board_phy_config(struct phy_device *phydev)
68 {
69 phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
70 phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
71
72 phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
73 phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
74 phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
75 phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
76
77 if (phydev->drv->config)
78 phydev->drv->config(phydev);
79
80 return 0;
81 }
82 #endif
83
checkboard(void)84 int checkboard(void)
85 {
86 puts("Board: iMX8QM MEK\n");
87
88 build_info();
89 print_bootinfo();
90
91 return 0;
92 }
93
board_init(void)94 int board_init(void)
95 {
96 /* Power up base board */
97 sc_pm_set_resource_power_mode(-1, SC_R_BOARD_R1, SC_PM_PW_MODE_ON);
98
99 board_gpio_init();
100
101 return 0;
102 }
103
104 #ifdef CONFIG_OF_BOARD_SETUP
ft_board_setup(void * blob,struct bd_info * bd)105 int ft_board_setup(void *blob, struct bd_info *bd)
106 {
107 return 0;
108 }
109 #endif
110
board_mmc_get_env_dev(int devno)111 int board_mmc_get_env_dev(int devno)
112 {
113 return devno;
114 }
115
board_late_init(void)116 int board_late_init(void)
117 {
118 char *fdt_file;
119 bool m4_booted;
120
121 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
122 env_set("board_name", "MEK");
123 env_set("board_rev", "iMX8QM");
124 #endif
125
126 fdt_file = env_get("fdt_file");
127 m4_booted = m4_parts_booted();
128
129 if (fdt_file && !strcmp(fdt_file, "undefined")) {
130 if (m4_booted)
131 env_set("fdt_file", "imx8qm-mek-rpmsg.dtb");
132 else
133 env_set("fdt_file", "imx8qm-mek.dtb");
134 }
135
136 return 0;
137 }
138