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