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
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 #ifdef CONFIG_USB
  19 static 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
  34 static inline void wdr4300_usb_start(void) {}
  35 #endif
  36
  37 void 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
  61 void board_debug_uart_init(void)
  62 {
  63         wdr4300_pinmux_config();
  64 }
  65 #endif
  66
  67 #ifdef CONFIG_BOARD_EARLY_INIT_F
  68 int 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