1 /*
2 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
3 */
4
5 /*
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21 #include <linux/init.h>
22 #include <linux/clk.h>
23 #include <linux/delay.h>
24 #include <linux/gpio.h>
25 #include <linux/smsc911x.h>
26 #include <linux/regulator/machine.h>
27 #include <linux/regulator/fixed.h>
28
29 #include <mach/common.h>
30 #include <mach/hardware.h>
31 #include <mach/iomux-mx53.h>
32
33 #include <asm/mach-types.h>
34 #include <asm/mach/arch.h>
35 #include <asm/mach/time.h>
36
37 #include "devices-imx53.h"
38
39 #define ARD_ETHERNET_INT_B IMX_GPIO_NR(2, 31)
40 #define ARD_SD1_CD IMX_GPIO_NR(1, 1)
41 #define ARD_SD1_WP IMX_GPIO_NR(1, 9)
42 #define ARD_I2CPORTEXP_B IMX_GPIO_NR(2, 3)
43 #define ARD_VOLUMEDOWN IMX_GPIO_NR(4, 0)
44 #define ARD_HOME IMX_GPIO_NR(5, 10)
45 #define ARD_BACK IMX_GPIO_NR(5, 11)
46 #define ARD_PROG IMX_GPIO_NR(5, 12)
47 #define ARD_VOLUMEUP IMX_GPIO_NR(5, 13)
48
49 static iomux_v3_cfg_t mx53_ard_pads[] = {
50 /* UART1 */
51 MX53_PAD_PATA_DIOW__UART1_TXD_MUX,
52 MX53_PAD_PATA_DMACK__UART1_RXD_MUX,
53 /* WEIM for CS1 */
54 MX53_PAD_EIM_EB3__GPIO2_31, /* ETHERNET_INT_B */
55 MX53_PAD_EIM_D16__EMI_WEIM_D_16,
56 MX53_PAD_EIM_D17__EMI_WEIM_D_17,
57 MX53_PAD_EIM_D18__EMI_WEIM_D_18,
58 MX53_PAD_EIM_D19__EMI_WEIM_D_19,
59 MX53_PAD_EIM_D20__EMI_WEIM_D_20,
60 MX53_PAD_EIM_D21__EMI_WEIM_D_21,
61 MX53_PAD_EIM_D22__EMI_WEIM_D_22,
62 MX53_PAD_EIM_D23__EMI_WEIM_D_23,
63 MX53_PAD_EIM_D24__EMI_WEIM_D_24,
64 MX53_PAD_EIM_D25__EMI_WEIM_D_25,
65 MX53_PAD_EIM_D26__EMI_WEIM_D_26,
66 MX53_PAD_EIM_D27__EMI_WEIM_D_27,
67 MX53_PAD_EIM_D28__EMI_WEIM_D_28,
68 MX53_PAD_EIM_D29__EMI_WEIM_D_29,
69 MX53_PAD_EIM_D30__EMI_WEIM_D_30,
70 MX53_PAD_EIM_D31__EMI_WEIM_D_31,
71 MX53_PAD_EIM_DA0__EMI_NAND_WEIM_DA_0,
72 MX53_PAD_EIM_DA1__EMI_NAND_WEIM_DA_1,
73 MX53_PAD_EIM_DA2__EMI_NAND_WEIM_DA_2,
74 MX53_PAD_EIM_DA3__EMI_NAND_WEIM_DA_3,
75 MX53_PAD_EIM_DA4__EMI_NAND_WEIM_DA_4,
76 MX53_PAD_EIM_DA5__EMI_NAND_WEIM_DA_5,
77 MX53_PAD_EIM_DA6__EMI_NAND_WEIM_DA_6,
78 MX53_PAD_EIM_OE__EMI_WEIM_OE,
79 MX53_PAD_EIM_RW__EMI_WEIM_RW,
80 MX53_PAD_EIM_CS1__EMI_WEIM_CS_1,
81 /* SDHC1 */
82 MX53_PAD_SD1_CMD__ESDHC1_CMD,
83 MX53_PAD_SD1_CLK__ESDHC1_CLK,
84 MX53_PAD_SD1_DATA0__ESDHC1_DAT0,
85 MX53_PAD_SD1_DATA1__ESDHC1_DAT1,
86 MX53_PAD_SD1_DATA2__ESDHC1_DAT2,
87 MX53_PAD_SD1_DATA3__ESDHC1_DAT3,
88 MX53_PAD_PATA_DATA8__ESDHC1_DAT4,
89 MX53_PAD_PATA_DATA9__ESDHC1_DAT5,
90 MX53_PAD_PATA_DATA10__ESDHC1_DAT6,
91 MX53_PAD_PATA_DATA11__ESDHC1_DAT7,
92 MX53_PAD_GPIO_1__GPIO1_1,
93 MX53_PAD_GPIO_9__GPIO1_9,
94 /* I2C2 */
95 MX53_PAD_EIM_EB2__I2C2_SCL,
96 MX53_PAD_KEY_ROW3__I2C2_SDA,
97 /* I2C3 */
98 MX53_PAD_GPIO_3__I2C3_SCL,
99 MX53_PAD_GPIO_16__I2C3_SDA,
100 /* GPIO */
101 MX53_PAD_DISP0_DAT16__GPIO5_10, /* home */
102 MX53_PAD_DISP0_DAT17__GPIO5_11, /* back */
103 MX53_PAD_DISP0_DAT18__GPIO5_12, /* prog */
104 MX53_PAD_DISP0_DAT19__GPIO5_13, /* vol up */
105 MX53_PAD_GPIO_10__GPIO4_0, /* vol down */
106 };
107
108 #define GPIO_BUTTON(gpio_num, ev_code, act_low, descr, wake) \
109 { \
110 .gpio = gpio_num, \
111 .type = EV_KEY, \
112 .code = ev_code, \
113 .active_low = act_low, \
114 .desc = "btn " descr, \
115 .wakeup = wake, \
116 }
117
118 static struct gpio_keys_button ard_buttons[] = {
119 GPIO_BUTTON(ARD_HOME, KEY_HOME, 1, "home", 0),
120 GPIO_BUTTON(ARD_BACK, KEY_BACK, 1, "back", 0),
121 GPIO_BUTTON(ARD_PROG, KEY_PROGRAM, 1, "program", 0),
122 GPIO_BUTTON(ARD_VOLUMEUP, KEY_VOLUMEUP, 1, "volume-up", 0),
123 GPIO_BUTTON(ARD_VOLUMEDOWN, KEY_VOLUMEDOWN, 1, "volume-down", 0),
124 };
125
126 static const struct gpio_keys_platform_data ard_button_data __initconst = {
127 .buttons = ard_buttons,
128 .nbuttons = ARRAY_SIZE(ard_buttons),
129 };
130
131 static struct resource ard_smsc911x_resources[] = {
132 {
133 .start = MX53_CS1_64MB_BASE_ADDR,
134 .end = MX53_CS1_64MB_BASE_ADDR + SZ_32M - 1,
135 .flags = IORESOURCE_MEM,
136 },
137 {
138 .start = IMX_GPIO_TO_IRQ(ARD_ETHERNET_INT_B),
139 .end = IMX_GPIO_TO_IRQ(ARD_ETHERNET_INT_B),
140 .flags = IORESOURCE_IRQ,
141 },
142 };
143
144 struct smsc911x_platform_config ard_smsc911x_config = {
145 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
146 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
147 .flags = SMSC911X_USE_32BIT,
148 };
149
150 static struct platform_device ard_smsc_lan9220_device = {
151 .name = "smsc911x",
152 .id = -1,
153 .num_resources = ARRAY_SIZE(ard_smsc911x_resources),
154 .resource = ard_smsc911x_resources,
155 .dev = {
156 .platform_data = &ard_smsc911x_config,
157 },
158 };
159
160 static const struct esdhc_platform_data mx53_ard_sd1_data __initconst = {
161 .cd_gpio = ARD_SD1_CD,
162 .wp_gpio = ARD_SD1_WP,
163 };
164
165 static struct imxi2c_platform_data mx53_ard_i2c2_data = {
166 .bitrate = 50000,
167 };
168
169 static struct imxi2c_platform_data mx53_ard_i2c3_data = {
170 .bitrate = 400000,
171 };
172
mx53_ard_io_init(void)173 static void __init mx53_ard_io_init(void)
174 {
175 gpio_request(ARD_ETHERNET_INT_B, "eth-int-b");
176 gpio_direction_input(ARD_ETHERNET_INT_B);
177
178 gpio_request(ARD_I2CPORTEXP_B, "i2cptexp-rst");
179 gpio_direction_output(ARD_I2CPORTEXP_B, 1);
180 }
181
182 /* Config CS1 settings for ethernet controller */
weim_cs_config(void)183 static int weim_cs_config(void)
184 {
185 u32 reg;
186 void __iomem *weim_base, *iomuxc_base;
187
188 weim_base = ioremap(MX53_WEIM_BASE_ADDR, SZ_4K);
189 if (!weim_base)
190 return -ENOMEM;
191
192 iomuxc_base = ioremap(MX53_IOMUXC_BASE_ADDR, SZ_4K);
193 if (!iomuxc_base) {
194 iounmap(weim_base);
195 return -ENOMEM;
196 }
197
198 /* CS1 timings for LAN9220 */
199 writel(0x20001, (weim_base + 0x18));
200 writel(0x0, (weim_base + 0x1C));
201 writel(0x16000202, (weim_base + 0x20));
202 writel(0x00000002, (weim_base + 0x24));
203 writel(0x16002082, (weim_base + 0x28));
204 writel(0x00000000, (weim_base + 0x2C));
205 writel(0x00000000, (weim_base + 0x90));
206
207 /* specify 64 MB on CS1 and CS0 on GPR1 */
208 reg = readl(iomuxc_base + 0x4);
209 reg &= ~0x3F;
210 reg |= 0x1B;
211 writel(reg, (iomuxc_base + 0x4));
212
213 iounmap(iomuxc_base);
214 iounmap(weim_base);
215
216 return 0;
217 }
218
219 static struct regulator_consumer_supply dummy_supplies[] = {
220 REGULATOR_SUPPLY("vdd33a", "smsc911x"),
221 REGULATOR_SUPPLY("vddvario", "smsc911x"),
222 };
223
imx53_ard_common_init(void)224 void __init imx53_ard_common_init(void)
225 {
226 mxc_iomux_v3_setup_multiple_pads(mx53_ard_pads,
227 ARRAY_SIZE(mx53_ard_pads));
228 weim_cs_config();
229 }
230
231 static struct platform_device *devices[] __initdata = {
232 &ard_smsc_lan9220_device,
233 };
234
mx53_ard_board_init(void)235 static void __init mx53_ard_board_init(void)
236 {
237 imx53_soc_init();
238 imx53_add_imx_uart(0, NULL);
239
240 imx53_ard_common_init();
241 mx53_ard_io_init();
242 regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
243 platform_add_devices(devices, ARRAY_SIZE(devices));
244
245 imx53_add_sdhci_esdhc_imx(0, &mx53_ard_sd1_data);
246 imx53_add_imx2_wdt(0, NULL);
247 imx53_add_imx_i2c(1, &mx53_ard_i2c2_data);
248 imx53_add_imx_i2c(2, &mx53_ard_i2c3_data);
249 imx_add_gpio_keys(&ard_button_data);
250 imx53_add_ahci_imx();
251 }
252
mx53_ard_timer_init(void)253 static void __init mx53_ard_timer_init(void)
254 {
255 mx53_clocks_init(32768, 24000000, 22579200, 0);
256 }
257
258 static struct sys_timer mx53_ard_timer = {
259 .init = mx53_ard_timer_init,
260 };
261
262 MACHINE_START(MX53_ARD, "Freescale MX53 ARD Board")
263 .map_io = mx53_map_io,
264 .init_early = imx53_init_early,
265 .init_irq = mx53_init_irq,
266 .handle_irq = imx53_handle_irq,
267 .timer = &mx53_ard_timer,
268 .init_machine = mx53_ard_board_init,
269 .restart = mxc_restart,
270 MACHINE_END
271