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dde53eae88
Add support for the Toradex SMARC iMX8MP. Link: https://www.toradex.com/computer-on-modules/smarc-arm-family/nxp-imx-8m-plus Link: https://www.toradex.com/products/carrier-board/smarc-development-board-kit Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* Copyright (C) 2024 Toradex */
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#include <init.h>
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#include <asm/global_data.h>
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#include <asm-generic/gpio.h>
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#include <linux/errno.h>
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#include "../common/tdx-cfg-block.h"
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DECLARE_GLOBAL_DATA_PTR;
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int board_init(void)
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{
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return 0;
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}
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int board_phys_sdram_size(phys_size_t *size)
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{
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if (!size)
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return -EINVAL;
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*size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE + PHYS_SDRAM_2_SIZE);
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return 0;
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}
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#if IS_ENABLED(CONFIG_OF_LIBFDT) && IS_ENABLED(CONFIG_OF_BOARD_SETUP)
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static bool board_has_wifi(void)
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{
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struct gpio_desc *desc;
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if (!gpio_hog_lookup_name("BT_UART_RXD_GPIO", &desc))
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return !!dm_gpio_get_value(desc);
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return true;
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}
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/*
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* Module variants with a Wi-Fi/Bluetooth module use UART3 for Bluetooth,
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* those without use UART3 as the SMARC SER3 UART.
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* Test for a Wi-Fi module and if none found reassign UART3 interface to
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* the SMARC SER3 pins.
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*/
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static void ft_board_assign_uart(void *blob)
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{
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const char *uart_path = "/soc@0/bus@30800000/spba-bus@30800000/serial@30880000";
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const char *pinctrl_path = "/soc@0/bus@30000000/pinctrl@30330000/uart3grp";
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int pinctrl_offset;
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int uart_offset;
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int bt_offset;
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u32 phandle;
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if (board_has_wifi())
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return;
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uart_offset = fdt_path_offset(blob, uart_path);
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if (uart_offset < 0)
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return;
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fdt_delprop(blob, uart_offset, "uart-has-rtscts");
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bt_offset = fdt_subnode_offset(blob, uart_offset, "bluetooth");
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if (bt_offset < 0)
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return;
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fdt_del_node(blob, bt_offset);
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pinctrl_offset = fdt_path_offset(blob, pinctrl_path);
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if (pinctrl_offset < 0)
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return;
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phandle = fdt_get_phandle(blob, pinctrl_offset);
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if (phandle < 0)
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return;
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fdt_setprop_u32(blob, uart_offset, "pinctrl-0", phandle);
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}
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int ft_board_setup(void *blob, struct bd_info *bd)
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{
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ft_board_assign_uart(blob);
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return ft_common_board_setup(blob, bd);
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}
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#endif
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