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 #ifdef CONFIG_USB 17 static void wdr4300_usb_start(void) 18 { 19 void __iomem *gpio_regs = map_physmem(AR71XX_GPIO_BASE, 20 AR71XX_GPIO_SIZE, MAP_NOCACHE); 21 if (!gpio_regs) 22 return; 23 24 /* Power up the USB HUB. */ 25 clrbits_be32(gpio_regs + AR71XX_GPIO_REG_OE, BIT(21) | BIT(22)); 26 writel(BIT(21) | BIT(22), gpio_regs + AR71XX_GPIO_REG_SET); 27 mdelay(1); 28 29 ath79_usb_reset(); 30 } 31 #else 32 static inline void wdr4300_usb_start(void) {} 33 #endif 34 35 void wdr4300_pinmux_config(void) 36 { 37 void __iomem *regs; 38 39 regs = map_physmem(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE, 40 MAP_NOCACHE); 41 42 /* Assure JTAG is not disconnected. */ 43 writel(0x40, regs + AR934X_GPIO_REG_FUNC); 44 45 /* Configure default GPIO input/output regs. */ 46 writel(0x3031b, regs + AR71XX_GPIO_REG_OE); 47 writel(0x0f804, regs + AR71XX_GPIO_REG_OUT); 48 49 /* Configure pin multiplexing. */ 50 writel(0x00000000, regs + AR934X_GPIO_REG_OUT_FUNC0); 51 writel(0x0b0a0980, regs + AR934X_GPIO_REG_OUT_FUNC1); 52 writel(0x00180000, regs + AR934X_GPIO_REG_OUT_FUNC2); 53 writel(0x00000000, regs + AR934X_GPIO_REG_OUT_FUNC3); 54 writel(0x0000004d, regs + AR934X_GPIO_REG_OUT_FUNC4); 55 writel(0x00000000, regs + AR934X_GPIO_REG_OUT_FUNC5); 56 } 57 58 #ifdef CONFIG_DEBUG_UART_BOARD_INIT 59 void board_debug_uart_init(void) 60 { 61 wdr4300_pinmux_config(); 62 } 63 #endif 64 65 #ifdef CONFIG_BOARD_EARLY_INIT_F 66 int board_early_init_f(void) 67 { 68 #ifndef CONFIG_DEBUG_UART_BOARD_INIT 69 wdr4300_pinmux_config(); 70 #endif 71 72 #ifndef CONFIG_SKIP_LOWLEVEL_INIT 73 ar934x_pll_init(560, 480, 240); 74 ar934x_ddr_init(560, 480, 240); 75 #endif 76 77 wdr4300_usb_start(); 78 ath79_eth_reset(); 79 80 return 0; 81 } 82 #endif 83