1 /*
2 * Copyright (C) 2011-2012
3 * Lauri Hintsala, Bluegiga, <lauri.hintsala@bluegiga.com>
4 * Veli-Pekka Peltola, Bluegiga, <veli-pekka.peltola@bluegiga.com>
5 *
6 * based on: mach-mx28evk.c
7 * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
19
20 #include <linux/delay.h>
21 #include <linux/platform_device.h>
22 #include <linux/gpio.h>
23 #include <linux/leds.h>
24 #include <linux/clk.h>
25 #include <linux/i2c.h>
26 #include <linux/regulator/machine.h>
27 #include <linux/regulator/fixed.h>
28 #include <linux/micrel_phy.h>
29
30 #include <asm/mach-types.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/time.h>
33
34 #include <mach/common.h>
35 #include <mach/digctl.h>
36 #include <mach/iomux-mx28.h>
37
38 #include "devices-mx28.h"
39
40 #define APX4DEVKIT_GPIO_USERLED MXS_GPIO_NR(3, 28)
41
42 static const iomux_cfg_t apx4devkit_pads[] __initconst = {
43 /* duart */
44 MX28_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
45 MX28_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
46
47 /* auart0 */
48 MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL,
49 MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL,
50 MX28_PAD_AUART0_CTS__AUART0_CTS | MXS_PAD_CTRL,
51 MX28_PAD_AUART0_RTS__AUART0_RTS | MXS_PAD_CTRL,
52
53 /* auart1 */
54 MX28_PAD_AUART1_RX__AUART1_RX | MXS_PAD_CTRL,
55 MX28_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
56
57 /* auart2 */
58 MX28_PAD_SSP2_SCK__AUART2_RX | MXS_PAD_CTRL,
59 MX28_PAD_SSP2_MOSI__AUART2_TX | MXS_PAD_CTRL,
60
61 /* auart3 */
62 MX28_PAD_SSP2_MISO__AUART3_RX | MXS_PAD_CTRL,
63 MX28_PAD_SSP2_SS0__AUART3_TX | MXS_PAD_CTRL,
64
65 #define MXS_PAD_FEC (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP)
66 /* fec0 */
67 MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC,
68 MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC,
69 MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC,
70 MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC,
71 MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC,
72 MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC,
73 MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC,
74 MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC,
75 MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC,
76
77 /* i2c */
78 MX28_PAD_I2C0_SCL__I2C0_SCL,
79 MX28_PAD_I2C0_SDA__I2C0_SDA,
80
81 /* mmc0 */
82 MX28_PAD_SSP0_DATA0__SSP0_D0 |
83 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
84 MX28_PAD_SSP0_DATA1__SSP0_D1 |
85 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
86 MX28_PAD_SSP0_DATA2__SSP0_D2 |
87 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
88 MX28_PAD_SSP0_DATA3__SSP0_D3 |
89 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
90 MX28_PAD_SSP0_DATA4__SSP0_D4 |
91 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
92 MX28_PAD_SSP0_DATA5__SSP0_D5 |
93 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
94 MX28_PAD_SSP0_DATA6__SSP0_D6 |
95 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
96 MX28_PAD_SSP0_DATA7__SSP0_D7 |
97 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
98 MX28_PAD_SSP0_CMD__SSP0_CMD |
99 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
100 MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
101 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
102 MX28_PAD_SSP0_SCK__SSP0_SCK |
103 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
104
105 /* led */
106 MX28_PAD_PWM3__GPIO_3_28 | MXS_PAD_CTRL,
107
108 /* saif0 & saif1 */
109 MX28_PAD_SAIF0_MCLK__SAIF0_MCLK |
110 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
111 MX28_PAD_SAIF0_LRCLK__SAIF0_LRCLK |
112 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
113 MX28_PAD_SAIF0_BITCLK__SAIF0_BITCLK |
114 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
115 MX28_PAD_SAIF0_SDATA0__SAIF0_SDATA0 |
116 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
117 MX28_PAD_SAIF1_SDATA0__SAIF1_SDATA0 |
118 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
119 };
120
121 /* led */
122 static const struct gpio_led apx4devkit_leds[] __initconst = {
123 {
124 .name = "user-led",
125 .default_trigger = "heartbeat",
126 .gpio = APX4DEVKIT_GPIO_USERLED,
127 },
128 };
129
130 static const struct gpio_led_platform_data apx4devkit_led_data __initconst = {
131 .leds = apx4devkit_leds,
132 .num_leds = ARRAY_SIZE(apx4devkit_leds),
133 };
134
135 static const struct fec_platform_data mx28_fec_pdata __initconst = {
136 .phy = PHY_INTERFACE_MODE_RMII,
137 };
138
139 static const struct mxs_mmc_platform_data apx4devkit_mmc_pdata __initconst = {
140 .wp_gpio = -EINVAL,
141 .flags = SLOTF_4_BIT_CAPABLE,
142 };
143
144 static const struct i2c_board_info apx4devkit_i2c_boardinfo[] __initconst = {
145 { I2C_BOARD_INFO("sgtl5000", 0x0a) }, /* ASoC */
146 { I2C_BOARD_INFO("pcf8563", 0x51) }, /* RTC */
147 };
148
149 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || \
150 defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
151 static struct regulator_consumer_supply apx4devkit_audio_consumer_supplies[] = {
152 REGULATOR_SUPPLY("VDDA", "0-000a"),
153 REGULATOR_SUPPLY("VDDIO", "0-000a"),
154 };
155
156 static struct regulator_init_data apx4devkit_vdd_reg_init_data = {
157 .constraints = {
158 .name = "3V3",
159 .always_on = 1,
160 },
161 .consumer_supplies = apx4devkit_audio_consumer_supplies,
162 .num_consumer_supplies = ARRAY_SIZE(apx4devkit_audio_consumer_supplies),
163 };
164
165 static struct fixed_voltage_config apx4devkit_vdd_pdata = {
166 .supply_name = "board-3V3",
167 .microvolts = 3300000,
168 .gpio = -EINVAL,
169 .enabled_at_boot = 1,
170 .init_data = &apx4devkit_vdd_reg_init_data,
171 };
172
173 static struct platform_device apx4devkit_voltage_regulator = {
174 .name = "reg-fixed-voltage",
175 .id = -1,
176 .num_resources = 0,
177 .dev = {
178 .platform_data = &apx4devkit_vdd_pdata,
179 },
180 };
181
apx4devkit_add_regulators(void)182 static void __init apx4devkit_add_regulators(void)
183 {
184 platform_device_register(&apx4devkit_voltage_regulator);
185 }
186 #else
apx4devkit_add_regulators(void)187 static void __init apx4devkit_add_regulators(void) {}
188 #endif
189
190 static const struct mxs_saif_platform_data
191 apx4devkit_mxs_saif_pdata[] __initconst = {
192 /* working on EXTMSTR0 mode (saif0 master, saif1 slave) */
193 {
194 .master_mode = 1,
195 .master_id = 0,
196 }, {
197 .master_mode = 0,
198 .master_id = 0,
199 },
200 };
201
apx4devkit_phy_fixup(struct phy_device * phy)202 static int apx4devkit_phy_fixup(struct phy_device *phy)
203 {
204 phy->dev_flags |= MICREL_PHY_50MHZ_CLK;
205 return 0;
206 }
207
apx4devkit_init(void)208 static void __init apx4devkit_init(void)
209 {
210 mxs_iomux_setup_multiple_pads(apx4devkit_pads,
211 ARRAY_SIZE(apx4devkit_pads));
212
213 mx28_add_duart();
214 mx28_add_auart0();
215 mx28_add_auart1();
216 mx28_add_auart2();
217 mx28_add_auart3();
218
219 /*
220 * Register fixup for the Micrel KS8031 PHY clock
221 * (shares same ID with KS8051)
222 */
223 phy_register_fixup_for_uid(PHY_ID_KS8051, MICREL_PHY_ID_MASK,
224 apx4devkit_phy_fixup);
225
226 mx28_add_fec(0, &mx28_fec_pdata);
227
228 mx28_add_mxs_mmc(0, &apx4devkit_mmc_pdata);
229
230 gpio_led_register_device(0, &apx4devkit_led_data);
231
232 mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
233 mx28_add_saif(0, &apx4devkit_mxs_saif_pdata[0]);
234 mx28_add_saif(1, &apx4devkit_mxs_saif_pdata[1]);
235
236 apx4devkit_add_regulators();
237
238 mx28_add_mxs_i2c(0);
239 i2c_register_board_info(0, apx4devkit_i2c_boardinfo,
240 ARRAY_SIZE(apx4devkit_i2c_boardinfo));
241
242 mxs_add_platform_device("mxs-sgtl5000", 0, NULL, 0, NULL, 0);
243 }
244
apx4devkit_timer_init(void)245 static void __init apx4devkit_timer_init(void)
246 {
247 mx28_clocks_init();
248 }
249
250 static struct sys_timer apx4devkit_timer = {
251 .init = apx4devkit_timer_init,
252 };
253
254 MACHINE_START(APX4DEVKIT, "Bluegiga APX4 Development Kit")
255 .map_io = mx28_map_io,
256 .init_irq = mx28_init_irq,
257 .timer = &apx4devkit_timer,
258 .init_machine = apx4devkit_init,
259 .restart = mxs_restart,
260 MACHINE_END
261