1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2014-2018
4 * Marcel Ziswiler <marcel@ziswiler.com>
5 */
6
7 #include <common.h>
8 #include <asm/arch/gp_padctrl.h>
9 #include <asm/arch/pinmux.h>
10 #include <asm/arch-tegra/ap.h>
11 #include <asm/arch-tegra/tegra.h>
12 #include <asm/gpio.h>
13 #include <asm/io.h>
14 #include <dm.h>
15 #include <i2c.h>
16 #include <pci_tegra.h>
17 #include "../common/tdx-common.h"
18
19 #include "pinmux-config-apalis_t30.h"
20
21 DECLARE_GLOBAL_DATA_PTR;
22
23 #define PMU_I2C_ADDRESS 0x2D
24 #define MAX_I2C_RETRY 3
25
26 #ifdef CONFIG_APALIS_T30_PCIE_EVALBOARD_INIT
27 #define PEX_PERST_N TEGRA_GPIO(S, 7) /* Apalis GPIO7 */
28 #define RESET_MOCI_CTRL TEGRA_GPIO(I, 4)
29
30 static int pci_reset_status;
31 #endif /* CONFIG_APALIS_T30_PCIE_EVALBOARD_INIT */
32
arch_misc_init(void)33 int arch_misc_init(void)
34 {
35 if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
36 NVBOOTTYPE_RECOVERY)
37 printf("USB recovery mode\n");
38
39 return 0;
40 }
41
checkboard(void)42 int checkboard(void)
43 {
44 printf("Model: Toradex Apalis T30 %dGB\n",
45 (gd->ram_size == 0x40000000) ? 1 : 2);
46
47 return 0;
48 }
49
50 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
ft_board_setup(void * blob,bd_t * bd)51 int ft_board_setup(void *blob, bd_t *bd)
52 {
53 return ft_common_board_setup(blob, bd);
54 }
55 #endif
56
57 /*
58 * Routine: pinmux_init
59 * Description: Do individual peripheral pinmux configs
60 */
pinmux_init(void)61 void pinmux_init(void)
62 {
63 pinmux_config_pingrp_table(tegra3_pinmux_common,
64 ARRAY_SIZE(tegra3_pinmux_common));
65
66 pinmux_config_pingrp_table(unused_pins_lowpower,
67 ARRAY_SIZE(unused_pins_lowpower));
68
69 /* Initialize any non-default pad configs (APB_MISC_GP regs) */
70 pinmux_config_drvgrp_table(apalis_t30_padctrl,
71 ARRAY_SIZE(apalis_t30_padctrl));
72 }
73
74 #ifdef CONFIG_PCI_TEGRA
tegra_pcie_board_init(void)75 int tegra_pcie_board_init(void)
76 {
77 struct udevice *dev;
78 u8 addr, data[1];
79 int err;
80
81 err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
82 if (err) {
83 debug("%s: Cannot find PMIC I2C chip\n", __func__);
84 return err;
85 }
86
87 /* TPS659110: VDD2_OP_REG = 1.05V */
88 data[0] = 0x27;
89 addr = 0x25;
90
91 err = dm_i2c_write(dev, addr, data, 1);
92 if (err) {
93 debug("failed to set VDD supply\n");
94 return err;
95 }
96
97 /* TPS659110: VDD2_REG 7.5 mV/us, ACTIVE */
98 data[0] = 0x0D;
99 addr = 0x24;
100
101 err = dm_i2c_write(dev, addr, data, 1);
102 if (err) {
103 debug("failed to enable VDD supply\n");
104 return err;
105 }
106
107 /* TPS659110: LDO6_REG = 1.1V, ACTIVE */
108 data[0] = 0x0D;
109 addr = 0x35;
110
111 err = dm_i2c_write(dev, addr, data, 1);
112 if (err) {
113 debug("failed to set AVDD supply\n");
114 return err;
115 }
116
117 #ifdef CONFIG_APALIS_T30_PCIE_EVALBOARD_INIT
118 gpio_request(PEX_PERST_N, "PEX_PERST_N");
119 gpio_request(RESET_MOCI_CTRL, "RESET_MOCI_CTRL");
120 #endif /* CONFIG_APALIS_T30_PCIE_EVALBOARD_INIT */
121
122 return 0;
123 }
124
tegra_pcie_board_port_reset(struct tegra_pcie_port * port)125 void tegra_pcie_board_port_reset(struct tegra_pcie_port *port)
126 {
127 int index = tegra_pcie_port_index_of_port(port);
128
129 if (index == 2) { /* I210 Gigabit Ethernet Controller (On-module) */
130 tegra_pcie_port_reset(port);
131 }
132 #ifdef CONFIG_APALIS_T30_PCIE_EVALBOARD_INIT
133 /*
134 * Apalis PCIe aka port 1 and Apalis Type Specific 4 Lane PCIe aka port
135 * 0 share the same RESET_MOCI therefore only assert it once for both
136 * ports to avoid losing the previously brought up port again.
137 */
138 else if ((index == 1) || (index == 0)) {
139 /* only do it once per init cycle */
140 if (pci_reset_status % 2 == 0) {
141 /*
142 * Reset PLX PEX 8605 PCIe Switch plus PCIe devices on
143 * Apalis Evaluation Board
144 */
145 gpio_direction_output(PEX_PERST_N, 0);
146 gpio_direction_output(RESET_MOCI_CTRL, 0);
147
148 /*
149 * Must be asserted for 100 ms after power and clocks
150 * are stable
151 */
152 mdelay(100);
153
154 gpio_set_value(PEX_PERST_N, 1);
155 /*
156 * Err_5: PEX_REFCLK_OUTpx/nx Clock Outputs is not
157 * Guaranteed Until 900 us After PEX_PERST# De-assertion
158 */
159 mdelay(1);
160 gpio_set_value(RESET_MOCI_CTRL, 1);
161 }
162 pci_reset_status++;
163 }
164 #endif /* CONFIG_APALIS_T30_PCIE_EVALBOARD_INIT */
165 }
166 #endif /* CONFIG_PCI_TEGRA */
167