1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * (C) Copyright 2010, 2018
4 * Allied Telesis <www.alliedtelesis.com>
5 */
6
7#include <common.h>
8#include <init.h>
9#include <net.h>
10#include <asm/global_data.h>
11#include <linux/bitops.h>
12#include <linux/delay.h>
13#include <linux/io.h>
14#include <miiphy.h>
15#include <netdev.h>
16#include <led.h>
17#include <asm/arch/cpu.h>
18#include <asm/arch/soc.h>
19#include <asm/arch/mpp.h>
20#include <asm-generic/gpio.h>
21#include <dm.h>
22
23/* Note: GPIO differences between specific boards
24 *
25 * We're trying to avoid having multiple build targets for all the Kirkwood
26 * based boards one area where things tend to differ is GPIO usage. For the
27 * most part the GPIOs driven by the bootloader are similar enough in function
28 * that there is no harm in driving them.
29 *
30 *         XZ4  XS6     XS16  GS24A         GT40   GP24A         GT24A
31 * GPIO39  -    INT(<)  NC    MUX_RST_N(>)  NC     POE_DIS_N(>)  NC
32 */
33
34#define SBX81LIFKW_OE_LOW	~(BIT(31) | BIT(30) | BIT(28) | BIT(27) | \
35				  BIT(18) | BIT(17) | BIT(13) | BIT(12) | \
36				  BIT(10))
37#define SBX81LIFKW_OE_HIGH	~(BIT(0) | BIT(1) | BIT(7))
38#define SBX81LIFKW_OE_VAL_LOW	 (BIT(31) | BIT(30) | BIT(28) | BIT(27))
39#define SBX81LIFKW_OE_VAL_HIGH	 (BIT(0) | BIT(1))
40
41DECLARE_GLOBAL_DATA_PTR;
42
43int board_early_init_f(void)
44{
45	/*
46	 * default gpio configuration
47	 * There are maximum 64 gpios controlled through 2 sets of registers
48	 * the  below configuration configures mainly initial LED status
49	 */
50	mvebu_config_gpio(SBX81LIFKW_OE_VAL_LOW,
51			  SBX81LIFKW_OE_VAL_HIGH,
52			  SBX81LIFKW_OE_LOW, SBX81LIFKW_OE_HIGH);
53
54	/* Multi-Purpose Pins Functionality configuration */
55	static const u32 kwmpp_config[] = {
56		MPP0_SPI_SCn,
57		MPP1_SPI_MOSI,
58		MPP2_SPI_SCK,
59		MPP3_SPI_MISO,
60		MPP4_UART0_RXD,
61		MPP5_UART0_TXD,
62		MPP6_SYSRST_OUTn,
63		MPP7_PEX_RST_OUTn,
64		MPP8_TW_SDA,
65		MPP9_TW_SCK,
66		MPP10_GPO,
67		MPP11_GPIO,
68		MPP12_GPO,
69		MPP13_GPIO,
70		MPP14_GPIO,
71		MPP15_UART0_RTS,
72		MPP16_UART0_CTS,
73		MPP17_GPIO,
74		MPP18_GPO,
75		MPP19_GPO,
76		MPP20_GPIO,
77		MPP21_GPIO,
78		MPP22_GPIO,
79		MPP23_GPIO,
80		MPP24_GPIO,
81		MPP25_GPIO,
82		MPP26_GPIO,
83		MPP27_GPIO,
84		MPP28_GPIO,
85		MPP29_GPIO,
86		MPP30_GPIO,
87		MPP31_GPIO,
88		MPP32_GPIO,
89		MPP33_GPIO,
90		MPP34_GPIO,
91		MPP35_GPIO,
92		MPP36_GPIO,
93		MPP37_GPIO,
94		MPP38_GPIO,
95		MPP39_GPIO,
96		MPP40_GPIO,
97		MPP41_GPIO,
98		MPP42_GPIO,
99		MPP43_GPIO,
100		MPP44_GPIO,
101		MPP45_GPIO,
102		MPP46_GPIO,
103		MPP47_GPIO,
104		MPP48_GPIO,
105		MPP49_GPIO,
106		0
107	};
108
109	kirkwood_mpp_conf(kwmpp_config, NULL);
110	return 0;
111}
112
113int board_init(void)
114{
115	/* Power-down unused subsystems. The required
116	 * subsystems are:
117	 *
118	 *  GE0         b0
119	 *  PEX0 PHY    b1
120	 *  PEX0.0      b2
121	 *  TSU         b5
122	 *  SDRAM       b6
123	 *  RUNIT       b7
124	 */
125	writel((BIT(0) | BIT(1) | BIT(2) |
126		BIT(5) | BIT(6) | BIT(7)),
127		KW_CPU_REG_BASE + 0x1c);
128
129	/* address of boot parameters */
130	gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
131
132	return 0;
133}
134
135#ifdef CONFIG_RESET_PHY_R
136/* automatically defined by kirkwood config.h */
137void reset_phy(void)
138{
139}
140#endif
141
142#ifdef CONFIG_MV88E61XX_SWITCH
143int mv88e61xx_hw_reset(struct phy_device *phydev)
144{
145	struct gpio_desc desc;
146	int ret;
147
148	ret = dm_gpio_lookup_name("mvebu0_27", &desc);
149	if (ret)
150		return ret;
151
152	ret = dm_gpio_request(&desc, "linkstreet_rst");
153	if (ret)
154		return ret;
155
156	/* Ensure the 88e6097 gets at least 10ms Reset
157	 */
158	dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
159	dm_gpio_set_value(&desc, 0);
160	mdelay(20);
161	dm_gpio_set_value(&desc, 1);
162	mdelay(20);
163
164	phydev->advertising = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
165
166	return 0;
167}
168#endif
169
170#ifdef CONFIG_MISC_INIT_R
171int misc_init_r(void)
172{
173	struct udevice *dev;
174	int ret;
175
176	ret = led_get_by_label("status:ledp", &dev);
177	if (!ret)
178		led_set_state(dev, LEDST_ON);
179
180	ret = led_get_by_label("status:ledn", &dev);
181	if (!ret)
182		led_set_state(dev, LEDST_OFF);
183
184	return 0;
185}
186#endif
187