LXR uboot/board/tplink/wdr4300/wdr4300.c

   1/*
   2 * Copyright (C) 2016 Marek Vasut <marex@denx.de>
   3 *
   4 * SPDX-License-Identifier: GPL-2.0+
   5 */
   6
   7#include <common.h>
   8#include <asm/io.h>
   9#include <asm/addrspace.h>
  10#include <asm/types.h>
  11#include <mach/ath79.h>
  12#include <mach/ar71xx_regs.h>
  13#include <mach/ddr.h>
  14#include <debug_uart.h>
  15
  16DECLARE_GLOBAL_DATA_PTR;
  17
  18#ifdef CONFIG_USB
  19static void wdr4300_usb_start(void)
  20{
  21        void __iomem *gpio_regs = map_physmem(AR71XX_GPIO_BASE,
  22                                              AR71XX_GPIO_SIZE, MAP_NOCACHE);
  23        if (!gpio_regs)
  24                return;
  25
  26        /* Power up the USB HUB. */
  27        clrbits_be32(gpio_regs + AR71XX_GPIO_REG_OE, BIT(21) | BIT(22));
  28        writel(BIT(21) | BIT(22), gpio_regs + AR71XX_GPIO_REG_SET);
  29        mdelay(1);
  30
  31        ath79_usb_reset();
  32}
  33#else
  34static inline void wdr4300_usb_start(void) {}
  35#endif
  36
  37void wdr4300_pinmux_config(void)
  38{
  39        void __iomem *regs;
  40
  41        regs = map_physmem(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE,
  42                           MAP_NOCACHE);
  43
  44        /* Assure JTAG is not disconnected. */
  45        writel(0x40, regs + AR934X_GPIO_REG_FUNC);
  46
  47        /* Configure default GPIO input/output regs. */
  48        writel(0x3031b, regs + AR71XX_GPIO_REG_OE);
  49        writel(0x0f804, regs + AR71XX_GPIO_REG_OUT);
  50
  51        /* Configure pin multiplexing. */
  52        writel(0x00000000, regs + AR934X_GPIO_REG_OUT_FUNC0);
  53        writel(0x0b0a0980, regs + AR934X_GPIO_REG_OUT_FUNC1);
  54        writel(0x00180000, regs + AR934X_GPIO_REG_OUT_FUNC2);
  55        writel(0x00000000, regs + AR934X_GPIO_REG_OUT_FUNC3);
  56        writel(0x0000004d, regs + AR934X_GPIO_REG_OUT_FUNC4);
  57        writel(0x00000000, regs + AR934X_GPIO_REG_OUT_FUNC5);
  58}
  59
  60#ifdef CONFIG_DEBUG_UART_BOARD_INIT
  61void board_debug_uart_init(void)
  62{
  63        wdr4300_pinmux_config();
  64}
  65#endif
  66
  67#ifdef CONFIG_BOARD_EARLY_INIT_F
  68int board_early_init_f(void)
  69{
  70#ifndef CONFIG_DEBUG_UART_BOARD_INIT
  71        wdr4300_pinmux_config();
  72#endif
  73
  74#ifndef CONFIG_SKIP_LOWLEVEL_INIT
  75        ar934x_pll_init(560, 480, 240);
  76        ar934x_ddr_init(560, 480, 240);
  77#endif
  78
  79        wdr4300_usb_start();
  80        ath79_eth_reset();
  81
  82        return 0;
  83}
  84#endif
  85