| Svyatoslav Ryhel | 41c0918 | 2024-08-01 16:50:41 +0300 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * (C) Copyright 2024 |
| 4 | * Svyatoslav Ryhel <clamor95@gmail.com> |
| 5 | */ |
| 6 | |
| 7 | #include <env.h> |
| 8 | #include <spl_gpio.h> |
| 9 | |
| 10 | #include <asm/gpio.h> |
| 11 | #include <asm/arch/pinmux.h> |
| 12 | |
| 13 | /* |
| 14 | * PCB_ID[1] is kb_row5_pr5 |
| 15 | * PCB_ID[3] is kb_col7_pq7 |
| 16 | * PCB_ID[4] is kb_row2_pr2 |
| 17 | * PCB_ID[5] is kb_col5_pq5 |
| 18 | * |
| 19 | * Project ID |
| 20 | * ===================================================== |
| 21 | * PCB_ID[1] PCB_ID[5] PCB_ID[4] PCB_ID[3] Project |
| 22 | * 0 0 0 0 TF201 |
| 23 | * 0 0 0 1 P1801 |
| 24 | * 0 0 1 0 TF300T |
| 25 | * 0 0 1 1 TF300TG |
| 26 | * 0 1 0 0 TF700T |
| 27 | * 0 1 0 1 TF300TL |
| 28 | * 0 1 1 0 Extension |
| 29 | * 0 1 1 1 TF500T |
| 30 | * 1 0 0 0 TF502T/TF600T |
| 31 | * ===================================================== |
| 32 | */ |
| 33 | enum project_rev { |
| 34 | TF201, P1801, TF300T, TF300TG, TF700T, |
| 35 | TF300TL, EXT, TF500T, TF600T |
| 36 | }; |
| 37 | |
| 38 | static const char * const project_id_to_fdt[] = { |
| 39 | [TF201] = "tegra30-asus-tf201", |
| 40 | [P1801] = "tegra30-asus-p1801-t", |
| 41 | [TF300T] = "tegra30-asus-tf300t", |
| 42 | [TF300TG] = "tegra30-asus-tf300tg", |
| 43 | [TF700T] = "tegra30-asus-tf700t", |
| 44 | [TF300TL] = "tegra30-asus-tf300tl", |
| 45 | [TF600T] = "tegra30-asus-tf600t", |
| 46 | }; |
| 47 | |
| 48 | static int id_gpio_get_value(u32 pingrp, u32 pin) |
| 49 | { |
| 50 | /* Configure pinmux */ |
| 51 | pinmux_set_func(pingrp, PMUX_FUNC_KBC); |
| 52 | pinmux_set_pullupdown(pingrp, PMUX_PULL_DOWN); |
| 53 | pinmux_tristate_enable(pingrp); |
| 54 | pinmux_set_io(pingrp, PMUX_PIN_INPUT); |
| 55 | |
| 56 | /* |
| 57 | * Since this function may be called |
| 58 | * during DM reload we should use SPL |
| 59 | * GPIO functions which do not depend |
| 60 | * on DM. |
| 61 | */ |
| 62 | spl_gpio_input(NULL, pin); |
| 63 | return spl_gpio_get_value(NULL, pin); |
| 64 | } |
| 65 | |
| 66 | static int get_project_id(void) |
| 67 | { |
| 68 | u32 pcb_id1, pcb_id3, pcb_id4, pcb_id5; |
| 69 | |
| 70 | pcb_id1 = id_gpio_get_value(PMUX_PINGRP_KB_ROW5_PR5, |
| 71 | TEGRA_GPIO(R, 5)); |
| 72 | pcb_id3 = id_gpio_get_value(PMUX_PINGRP_KB_COL7_PQ7, |
| 73 | TEGRA_GPIO(Q, 7)); |
| 74 | pcb_id4 = id_gpio_get_value(PMUX_PINGRP_KB_ROW2_PR2, |
| 75 | TEGRA_GPIO(R, 2)); |
| 76 | pcb_id5 = id_gpio_get_value(PMUX_PINGRP_KB_COL5_PQ5, |
| 77 | TEGRA_GPIO(Q, 5)); |
| 78 | |
| 79 | /* Construct board ID */ |
| 80 | int proj_id = pcb_id1 << 3 | pcb_id5 << 2 | |
| 81 | pcb_id4 << 1 | pcb_id3; |
| 82 | |
| 83 | log_debug("[TRANSFORMER]: project id %d (%s)\n", proj_id, |
| 84 | project_id_to_fdt[proj_id]); |
| 85 | |
| 86 | /* Mark tablet with SPI flash */ |
| 87 | if (proj_id == TF600T) |
| 88 | env_set_hex("spiflash", true); |
| 89 | else |
| 90 | env_set_hex("spiflash", false); |
| 91 | |
| 92 | return proj_id & 0xf; |
| 93 | } |
| 94 | |
| 95 | int board_fit_config_name_match(const char *name) |
| 96 | { |
| 97 | if (!strcmp(name, project_id_to_fdt[get_project_id()])) |
| 98 | return 0; |
| 99 | |
| 100 | return -1; |
| 101 | } |
| 102 | |
| 103 | void nvidia_board_late_init(void) |
| 104 | { |
| 105 | char dt_path[64] = { 0 }; |
| 106 | |
| 107 | snprintf(dt_path, sizeof(dt_path), "%s.dtb", |
| 108 | project_id_to_fdt[get_project_id()]); |
| 109 | env_set("fdtfile", dt_path); |
| 110 | } |