1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2012 Lucas Stach
4 */
5
6 #include <common.h>
7 #include <init.h>
8 #include <log.h>
9 #include <asm/arch/clock.h>
10 #include <asm/arch/funcmux.h>
11 #include <asm/arch/pinmux.h>
12 #include <asm/arch-tegra/ap.h>
13 #include <asm/arch-tegra/board.h>
14 #include <asm/arch-tegra/tegra.h>
15 #include <asm/global_data.h>
16 #include <asm/gpio.h>
17 #include <asm/io.h>
18 #include <i2c.h>
19 #include <nand.h>
20 #include <linux/delay.h>
21 #include "../common/tdx-common.h"
22
23 DECLARE_GLOBAL_DATA_PTR;
24
25 #define PMU_I2C_ADDRESS 0x34
26 #define MAX_I2C_RETRY 3
27 #define PMU_SUPPLYENE 0x14
28 #define PMU_SUPPLYENE_SYSINEN (1<<5)
29 #define PMU_SUPPLYENE_EXITSLREQ (1<<1)
30
arch_misc_init(void)31 int arch_misc_init(void)
32 {
33 /* Disable PMIC sleep mode on low supply voltage */
34 struct udevice *dev;
35 u8 addr, data[1];
36 int err;
37
38 err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
39 if (err) {
40 debug("%s: Cannot find PMIC I2C chip\n", __func__);
41 return err;
42 }
43
44 addr = PMU_SUPPLYENE;
45
46 err = dm_i2c_read(dev, addr, data, 1);
47 if (err) {
48 debug("failed to get PMU_SUPPLYENE\n");
49 return err;
50 }
51
52 data[0] &= ~PMU_SUPPLYENE_SYSINEN;
53 data[0] |= PMU_SUPPLYENE_EXITSLREQ;
54
55 err = dm_i2c_write(dev, addr, data, 1);
56 if (err) {
57 debug("failed to set PMU_SUPPLYENE\n");
58 return err;
59 }
60
61 /* make sure SODIMM pin 87 nRESET_OUT is released properly */
62 pinmux_set_func(PMUX_PINGRP_ATA, PMUX_FUNC_GMI);
63
64 if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
65 NVBOOTTYPE_RECOVERY)
66 printf("USB recovery mode\n");
67
68 return 0;
69 }
70
checkboard(void)71 int checkboard(void)
72 {
73 printf("Model: Toradex Colibri T20 %dMB V%s\n",
74 (gd->ram_size == 0x10000000) ? 256 : 512,
75 (get_nand_dev_by_index(0)->erasesize >> 10 == 512) ?
76 ((gd->ram_size == 0x10000000) ? "1.1B" : "1.1C") : "1.2A");
77
78 return 0;
79 }
80
81 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
ft_board_setup(void * blob,struct bd_info * bd)82 int ft_board_setup(void *blob, struct bd_info *bd)
83 {
84 return ft_common_board_setup(blob, bd);
85 }
86 #endif
87
88 #ifdef CONFIG_MMC_SDHCI_TEGRA
89 /*
90 * Routine: pin_mux_mmc
91 * Description: setup the pin muxes/tristate values for the SDMMC(s)
92 */
pin_mux_mmc(void)93 void pin_mux_mmc(void)
94 {
95 funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_4_BIT);
96 pinmux_tristate_disable(PMUX_PINGRP_GMB);
97 }
98 #endif
99
100 #ifdef CONFIG_TEGRA_NAND
pin_mux_nand(void)101 void pin_mux_nand(void)
102 {
103 funcmux_select(PERIPH_ID_NDFLASH, FUNCMUX_NDFLASH_KBC_8_BIT);
104
105 /*
106 * configure pingroup ATC to something unrelated to
107 * avoid ATC overriding KBC
108 */
109 pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_GMI);
110 }
111 #endif
112
113 #ifdef CONFIG_USB_EHCI_TEGRA
pin_mux_usb(void)114 void pin_mux_usb(void)
115 {
116 /* module internal USB bus to connect ethernet chipset */
117 funcmux_select(PERIPH_ID_USB2, FUNCMUX_USB2_ULPI);
118
119 /* ULPI reference clock output */
120 pinmux_set_func(PMUX_PINGRP_CDEV2, PMUX_FUNC_PLLP_OUT4);
121 pinmux_tristate_disable(PMUX_PINGRP_CDEV2);
122
123 /* PHY reset GPIO */
124 pinmux_tristate_disable(PMUX_PINGRP_UAC);
125
126 /* VBus GPIO */
127 pinmux_tristate_disable(PMUX_PINGRP_DTE);
128
129 /* Reset ASIX using LAN_RESET */
130 gpio_request(TEGRA_GPIO(V, 4), "LAN_RESET");
131 gpio_direction_output(TEGRA_GPIO(V, 4), 0);
132 pinmux_tristate_disable(PMUX_PINGRP_GPV);
133 udelay(5);
134 gpio_set_value(TEGRA_GPIO(V, 4), 1);
135
136 /* USBH_PEN: USB 1 aka Tegra USB port 3 VBus */
137 pinmux_tristate_disable(PMUX_PINGRP_SPIG);
138 }
139 #endif
140
141 #ifdef CONFIG_VIDEO_TEGRA20
142 /*
143 * Routine: pin_mux_display
144 * Description: setup the pin muxes/tristate values for the LCD interface)
145 */
pin_mux_display(void)146 void pin_mux_display(void)
147 {
148 /*
149 * Manually untristate BL_ON (PT4 - SODIMM 71) as specified through
150 * device-tree
151 */
152 pinmux_tristate_disable(PMUX_PINGRP_DTA);
153
154 pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_PWM);
155 pinmux_tristate_disable(PMUX_PINGRP_SDC);
156 }
157
158 /*
159 * Backlight off before OS handover
160 */
board_preboot_os(void)161 void board_preboot_os(void)
162 {
163 gpio_request(TEGRA_GPIO(T, 4), "BL_ON");
164 gpio_direction_output(TEGRA_GPIO(T, 4), 0);
165 }
166 #endif
167