| Svyatoslav Ryhel | 84686d8 | 2024-08-01 16:42:24 +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 | * PMIC_ID is GMI_CS2_N_PK3 |
| 15 | * MODEM_ID is GMI_CS4_N_PK2 |
| 16 | * |
| 17 | * Extended Project ID |
| 18 | * ==================================== |
| 19 | * MODEM_ID PMIC_ID project name |
| 20 | * 0 0 grouper-E1565 |
| 21 | * 0 1 grouper-PM269 |
| 22 | * 1 0 tilapia |
| 23 | */ |
| 24 | enum project_rev { |
| 25 | E1565, PM269, TILAPIA, COUNT, |
| 26 | }; |
| 27 | |
| 28 | static const char * const project_id_to_fdt[] = { |
| 29 | [E1565] = "tegra30-asus-nexus7-grouper-E1565", |
| 30 | [PM269] = "tegra30-asus-nexus7-grouper-PM269", |
| 31 | [TILAPIA] = "tegra30-asus-nexus7-tilapia-E1565", |
| 32 | }; |
| 33 | |
| 34 | static int id_gpio_get_value(u32 pingrp, u32 pin) |
| 35 | { |
| 36 | /* Configure pinmux */ |
| 37 | pinmux_set_func(pingrp, PMUX_FUNC_GMI); |
| 38 | pinmux_set_pullupdown(pingrp, PMUX_PULL_DOWN); |
| 39 | pinmux_tristate_enable(pingrp); |
| 40 | pinmux_set_io(pingrp, PMUX_PIN_INPUT); |
| 41 | |
| 42 | /* |
| 43 | * Since this function may be called |
| 44 | * during DM reload we should use SPL |
| 45 | * GPIO functions which do not depend |
| 46 | * on DM. |
| 47 | */ |
| 48 | spl_gpio_input(NULL, pin); |
| 49 | return spl_gpio_get_value(NULL, pin); |
| 50 | } |
| 51 | |
| 52 | static int get_project_id(void) |
| 53 | { |
| 54 | u32 pmic_id, modem_id, proj_id; |
| 55 | |
| 56 | modem_id = id_gpio_get_value(PMUX_PINGRP_GMI_CS4_N_PK2, |
| 57 | TEGRA_GPIO(K, 2)); |
| 58 | pmic_id = id_gpio_get_value(PMUX_PINGRP_GMI_CS2_N_PK3, |
| 59 | TEGRA_GPIO(K, 3)); |
| 60 | |
| 61 | proj_id = (modem_id << 1 | pmic_id) & COUNT; |
| 62 | |
| 63 | log_debug("[GROUPER]: project id %d (%s)\n", proj_id, |
| 64 | project_id_to_fdt[proj_id]); |
| 65 | |
| 66 | return proj_id; |
| 67 | } |
| 68 | |
| 69 | int board_fit_config_name_match(const char *name) |
| 70 | { |
| 71 | if (!strcmp(name, project_id_to_fdt[get_project_id()])) |
| 72 | return 0; |
| 73 | |
| 74 | return -1; |
| 75 | } |
| 76 | |
| 77 | void nvidia_board_late_init(void) |
| 78 | { |
| 79 | char dt_path[64] = { 0 }; |
| 80 | |
| 81 | snprintf(dt_path, sizeof(dt_path), "%s.dtb", |
| 82 | project_id_to_fdt[get_project_id()]); |
| 83 | env_set("fdtfile", dt_path); |
| 84 | } |