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1c1608e0c7
Use board revision detection mechanism to choose correct DTB. Adjust documentation and build setup accordingly. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2024
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* Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <env.h>
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#include <spl_gpio.h>
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#include <asm/gpio.h>
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#include <asm/arch/pinmux.h>
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/*
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* PMIC_ID is GMI_CS2_N_PK3
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* MODEM_ID is GMI_CS4_N_PK2
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*
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* Extended Project ID
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* ====================================
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* MODEM_ID PMIC_ID project name
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* 0 0 grouper-E1565
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* 0 1 grouper-PM269
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* 1 0 tilapia
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*/
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enum project_rev {
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E1565, PM269, TILAPIA, COUNT,
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};
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static const char * const project_id_to_fdt[] = {
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[E1565] = "tegra30-asus-nexus7-grouper-E1565",
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[PM269] = "tegra30-asus-nexus7-grouper-PM269",
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[TILAPIA] = "tegra30-asus-nexus7-tilapia-E1565",
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};
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static int id_gpio_get_value(u32 pingrp, u32 pin)
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{
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/* Configure pinmux */
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pinmux_set_func(pingrp, PMUX_FUNC_GMI);
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pinmux_set_pullupdown(pingrp, PMUX_PULL_DOWN);
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pinmux_tristate_enable(pingrp);
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pinmux_set_io(pingrp, PMUX_PIN_INPUT);
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/*
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* Since this function may be called
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* during DM reload we should use SPL
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* GPIO functions which do not depend
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* on DM.
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*/
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spl_gpio_input(NULL, pin);
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return spl_gpio_get_value(NULL, pin);
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}
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static int get_project_id(void)
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{
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u32 pmic_id, modem_id, proj_id;
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modem_id = id_gpio_get_value(PMUX_PINGRP_GMI_CS4_N_PK2,
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TEGRA_GPIO(K, 2));
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pmic_id = id_gpio_get_value(PMUX_PINGRP_GMI_CS2_N_PK3,
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TEGRA_GPIO(K, 3));
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proj_id = (modem_id << 1 | pmic_id) & COUNT;
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log_debug("[GROUPER]: project id %d (%s)\n", proj_id,
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project_id_to_fdt[proj_id]);
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return proj_id;
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}
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int board_fit_config_name_match(const char *name)
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{
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if (!strcmp(name, project_id_to_fdt[get_project_id()]))
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return 0;
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return -1;
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}
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void nvidia_board_late_init(void)
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{
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char dt_path[64] = { 0 };
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snprintf(dt_path, sizeof(dt_path), "%s.dtb",
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project_id_to_fdt[get_project_id()]);
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env_set("fdtfile", dt_path);
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}
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