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 85