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

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