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