| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| /* |
| * This file is created based on Intel Alder Lake Processor PCH Datasheet |
| * Document number: 621483 |
| * Chapter number: 9 |
| */ |
| |
| #include <console/console.h> |
| #include <device/pci_def.h> |
| #include <intelblocks/gpio.h> |
| #include <intelblocks/lpss.h> |
| #include <intelblocks/pcr.h> |
| #include <intelblocks/uart.h> |
| #include <soc/iomap.h> |
| #include <soc/pch.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pcr_ids.h> |
| |
| const struct uart_gpio_pad_config uart_gpio_pads[] = { |
| { |
| .console_index = 0, |
| .gpios = { |
| PAD_CFG_NF(GPP_H10, NONE, DEEP, NF2), /* UART0 RX */ |
| PAD_CFG_NF(GPP_H11, NONE, DEEP, NF2), /* UART0 TX */ |
| }, |
| }, |
| { |
| .console_index = 1, |
| .gpios = { |
| PAD_CFG_NF(GPP_C12, NONE, DEEP, NF1), /* UART1 RX */ |
| PAD_CFG_NF(GPP_C13, NONE, DEEP, NF1), /* UART1 TX */ |
| }, |
| }, |
| { |
| .console_index = 2, |
| .gpios = { |
| PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), /* UART2 RX */ |
| PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1), /* UART2 TX */ |
| }, |
| } |
| }; |
| |
| const int uart_max_index = ARRAY_SIZE(uart_gpio_pads); |
| |
| DEVTREE_CONST struct device *soc_uart_console_to_device(int uart_console) |
| { |
| /* |
| * if index is valid, this function will return corresponding structure |
| * for uart console else will return NULL. |
| */ |
| switch (uart_console) { |
| case 0: |
| return pcidev_path_on_root(PCH_DEVFN_UART0); |
| case 1: |
| return pcidev_path_on_root(PCH_DEVFN_UART1); |
| case 2: |
| return pcidev_path_on_root(PCH_DEVFN_UART2); |
| default: |
| printk(BIOS_ERR, "Invalid UART console index\n"); |
| return NULL; |
| } |
| } |