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 <init.h>
8 #include <asm/io.h>
9 #include <asm/addrspace.h>
10 #include <asm/types.h>
11 #include <linux/bitops.h>
12 #include <linux/delay.h>
13 #include <mach/ath79.h>
14 #include <mach/ar71xx_regs.h>
15 #include <mach/ddr.h>
16 #include <debug_uart.h>
17
18 #ifdef CONFIG_USB
wdr4300_usb_start(void)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
wdr4300_usb_start(void)34 static inline void wdr4300_usb_start(void) {}
35 #endif
36
wdr4300_pinmux_config(void)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
board_debug_uart_init(void)61 void board_debug_uart_init(void)
62 {
63 wdr4300_pinmux_config();
64 }
65 #endif
66
67 #ifdef CONFIG_BOARD_EARLY_INIT_F
board_early_init_f(void)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