1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/arch/arm/mach-pxa/pcm027.c
4 * Support for the Phytec phyCORE-PXA270 CPU card (aka PCM-027).
5 *
6 * Refer
7 * http://www.phytec.com/products/sbc/ARM-XScale/phyCORE-XScale-PXA270.html
8 * for additional hardware info
9 *
10 * Author: Juergen Kilb
11 * Created: April 05, 2005
12 * Copyright: Phytec Messtechnik GmbH
13 * e-Mail: armlinux@phytec.de
14 *
15 * based on Intel Mainstone Board
16 *
17 * Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
18 */
19
20 #include <linux/irq.h>
21 #include <linux/platform_device.h>
22 #include <linux/mtd/physmap.h>
23 #include <linux/spi/spi.h>
24 #include <linux/spi/max7301.h>
25 #include <linux/spi/pxa2xx_spi.h>
26 #include <linux/leds.h>
27
28 #include <asm/mach-types.h>
29 #include <asm/mach/arch.h>
30 #include "pxa27x.h"
31 #include "pcm027.h"
32 #include "generic.h"
33
34 /*
35 * ABSTRACT:
36 *
37 * The PXA270 processor comes with a bunch of hardware on its silicon.
38 * Not all of this hardware can be used at the same time and not all
39 * is routed to module's connectors. Also it depends on the baseboard, what
40 * kind of hardware can be used in which way.
41 * -> So this file supports the main devices on the CPU card only!
42 * Refer pcm990-baseboard.c how to extend this features to get a full
43 * blown system with many common interfaces.
44 *
45 * The PCM-027 supports the following interfaces through its connectors and
46 * will be used in pcm990-baseboard.c:
47 *
48 * - LCD support
49 * - MMC support
50 * - IDE/CF card
51 * - FFUART
52 * - BTUART
53 * - IRUART
54 * - AC97
55 * - SSP
56 * - SSP3
57 *
58 * Claimed GPIOs:
59 * GPIO0 -> IRQ input from RTC
60 * GPIO2 -> SYS_ENA*)
61 * GPIO3 -> PWR_SCL
62 * GPIO4 -> PWR_SDA
63 * GPIO5 -> PowerCap0*)
64 * GPIO6 -> PowerCap1*)
65 * GPIO7 -> PowerCap2*)
66 * GPIO8 -> PowerCap3*)
67 * GPIO15 -> /CS1
68 * GPIO20 -> /CS2
69 * GPIO21 -> /CS3
70 * GPIO33 -> /CS5 network controller select
71 * GPIO52 -> IRQ from network controller
72 * GPIO78 -> /CS2
73 * GPIO80 -> /CS4
74 * GPIO90 -> LED0
75 * GPIO91 -> LED1
76 * GPIO114 -> IRQ from CAN controller
77 * GPIO117 -> SCL
78 * GPIO118 -> SDA
79 *
80 * *) CPU internal use only
81 */
82
83 static unsigned long pcm027_pin_config[] __initdata = {
84 /* Chip Selects */
85 GPIO20_nSDCS_2,
86 GPIO21_nSDCS_3,
87 GPIO15_nCS_1,
88 GPIO78_nCS_2,
89 GPIO80_nCS_4,
90 GPIO33_nCS_5, /* Ethernet */
91
92 /* I2C */
93 GPIO117_I2C_SCL,
94 GPIO118_I2C_SDA,
95
96 /* GPIO */
97 GPIO52_GPIO, /* IRQ from network controller */
98 #ifdef CONFIG_LEDS_GPIO
99 GPIO90_GPIO, /* PCM027_LED_CPU */
100 GPIO91_GPIO, /* PCM027_LED_HEART_BEAT */
101 #endif
102 GPIO114_GPIO, /* IRQ from CAN controller */
103 };
104
105 /*
106 * SMC91x network controller specific stuff
107 */
108 static struct resource smc91x_resources[] = {
109 [0] = {
110 .start = PCM027_ETH_PHYS + 0x300,
111 .end = PCM027_ETH_PHYS + PCM027_ETH_SIZE,
112 .flags = IORESOURCE_MEM,
113 },
114 [1] = {
115 .start = PCM027_ETH_IRQ,
116 .end = PCM027_ETH_IRQ,
117 /* note: smc91x's driver doesn't use the trigger bits yet */
118 .flags = IORESOURCE_IRQ | PCM027_ETH_IRQ_EDGE,
119 }
120 };
121
122 static struct platform_device smc91x_device = {
123 .name = "smc91x",
124 .id = 0,
125 .num_resources = ARRAY_SIZE(smc91x_resources),
126 .resource = smc91x_resources,
127 };
128
129 /*
130 * SPI host and devices
131 */
132 static struct pxa2xx_spi_controller pxa_ssp_master_info = {
133 .num_chipselect = 1,
134 };
135
136 static struct max7301_platform_data max7301_info = {
137 .base = -1,
138 };
139
140 /* bus_num must match id in pxa2xx_set_spi_info() call */
141 static struct spi_board_info spi_board_info[] __initdata = {
142 {
143 .modalias = "max7301",
144 .platform_data = &max7301_info,
145 .max_speed_hz = 13000000,
146 .bus_num = 1,
147 .chip_select = 0,
148 .mode = SPI_MODE_0,
149 },
150 };
151
152 /*
153 * NOR flash
154 */
155 static struct physmap_flash_data pcm027_flash_data = {
156 .width = 4,
157 };
158
159 static struct resource pcm027_flash_resource = {
160 .start = PCM027_FLASH_PHYS,
161 .end = PCM027_FLASH_PHYS + PCM027_FLASH_SIZE - 1 ,
162 .flags = IORESOURCE_MEM,
163 };
164
165 static struct platform_device pcm027_flash = {
166 .name = "physmap-flash",
167 .id = 0,
168 .dev = {
169 .platform_data = &pcm027_flash_data,
170 },
171 .resource = &pcm027_flash_resource,
172 .num_resources = 1,
173 };
174
175 #ifdef CONFIG_LEDS_GPIO
176
177 static struct gpio_led pcm027_led[] = {
178 {
179 .name = "led0:red", /* FIXME */
180 .gpio = PCM027_LED_CPU
181 },
182 {
183 .name = "led1:green", /* FIXME */
184 .gpio = PCM027_LED_HEARD_BEAT
185 },
186 };
187
188 static struct gpio_led_platform_data pcm027_led_data = {
189 .num_leds = ARRAY_SIZE(pcm027_led),
190 .leds = pcm027_led
191 };
192
193 static struct platform_device pcm027_led_dev = {
194 .name = "leds-gpio",
195 .id = 0,
196 .dev = {
197 .platform_data = &pcm027_led_data,
198 },
199 };
200
201 #endif /* CONFIG_LEDS_GPIO */
202
203 /*
204 * declare the available device resources on this board
205 */
206 static struct platform_device *devices[] __initdata = {
207 &smc91x_device,
208 &pcm027_flash,
209 #ifdef CONFIG_LEDS_GPIO
210 &pcm027_led_dev
211 #endif
212 };
213
214 /*
215 * pcm027_init - breath some life into the board
216 */
pcm027_init(void)217 static void __init pcm027_init(void)
218 {
219 /* system bus arbiter setting
220 * - Core_Park
221 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
222 */
223 ARB_CNTRL = ARB_CORE_PARK | 0x234;
224
225 pxa2xx_mfp_config(pcm027_pin_config, ARRAY_SIZE(pcm027_pin_config));
226
227 pxa_set_ffuart_info(NULL);
228 pxa_set_btuart_info(NULL);
229 pxa_set_stuart_info(NULL);
230
231 platform_add_devices(devices, ARRAY_SIZE(devices));
232
233 /* at last call the baseboard to initialize itself */
234 #ifdef CONFIG_MACH_PCM990_BASEBOARD
235 pcm990_baseboard_init();
236 #endif
237
238 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
239 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
240 }
241
pcm027_map_io(void)242 static void __init pcm027_map_io(void)
243 {
244 pxa27x_map_io();
245
246 /* initialize sleep mode regs (wake-up sources, etc) */
247 PGSR0 = 0x01308000;
248 PGSR1 = 0x00CF0002;
249 PGSR2 = 0x0E294000;
250 PGSR3 = 0x0000C000;
251 PWER = 0x40000000 | PWER_GPIO0 | PWER_GPIO1;
252 PRER = 0x00000000;
253 PFER = 0x00000003;
254 }
255
256 MACHINE_START(PCM027, "Phytec Messtechnik GmbH phyCORE-PXA270")
257 /* Maintainer: Pengutronix */
258 .atag_offset = 0x100,
259 .map_io = pcm027_map_io,
260 .nr_irqs = PCM027_NR_IRQS,
261 .init_irq = pxa27x_init_irq,
262 .handle_irq = pxa27x_handle_irq,
263 .init_time = pxa_timer_init,
264 .init_machine = pcm027_init,
265 .restart = pxa_restart,
266 MACHINE_END
267