LXR uboot/board/qca/ap121/ap121.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
   4 */
   5
   6#include <common.h>
   7#include <asm/io.h>
   8#include <asm/addrspace.h>
   9#include <asm/types.h>
  10#include <mach/ar71xx_regs.h>
  11#include <mach/ddr.h>
  12#include <mach/ath79.h>
  13#include <debug_uart.h>
  14
  15#ifdef CONFIG_DEBUG_UART_BOARD_INIT
  16void board_debug_uart_init(void)
  17{
  18        void __iomem *regs;
  19        u32 val;
  20
  21        regs = map_physmem(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE,
  22                           MAP_NOCACHE);
  23
  24        /*
  25         * GPIO9 as input, GPIO10 as output
  26         */
  27        val = readl(regs + AR71XX_GPIO_REG_OE);
  28        val &= ~AR933X_GPIO(9);
  29        val |= AR933X_GPIO(10);
  30        writel(val, regs + AR71XX_GPIO_REG_OE);
  31
  32        /*
  33         * Enable UART, GPIO9 as UART_SI, GPIO10 as UART_SO
  34         */
  35        val = readl(regs + AR71XX_GPIO_REG_FUNC);
  36        val |= AR933X_GPIO_FUNC_UART_EN | AR933X_GPIO_FUNC_RES_TRUE;
  37        writel(val, regs + AR71XX_GPIO_REG_FUNC);
  38}
  39#endif
  40
  41int board_early_init_f(void)
  42{
  43        ddr_init();
  44        ath79_eth_reset();
  45        return 0;
  46}
  47