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
wdr4300_usb_start(void)16 static 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
wdr4300_usb_start(void)31 static inline void wdr4300_usb_start(void) {}
32 #endif
33
wdr4300_pinmux_config(void)34 void 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
board_debug_uart_init(void)58 void board_debug_uart_init(void)
59 {
60 wdr4300_pinmux_config();
61 }
62 #endif
63
64 #ifdef CONFIG_BOARD_EARLY_INIT_F
board_early_init_f(void)65 int 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