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cm-x255.c
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1 /*
2  * linux/arch/arm/mach-pxa/cm-x255.c
3  *
4  * Copyright (C) 2007, 2008 CompuLab, Ltd.
5  * Mike Rapoport <[email protected]>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 
12 #include <linux/platform_device.h>
13 #include <linux/irq.h>
14 #include <linux/mtd/partitions.h>
15 #include <linux/mtd/physmap.h>
16 #include <linux/mtd/nand-gpio.h>
17 
18 #include <linux/spi/spi.h>
19 #include <linux/spi/pxa2xx_spi.h>
20 
21 #include <asm/mach/arch.h>
22 #include <asm/mach-types.h>
23 #include <asm/mach/map.h>
24 
25 #include <mach/pxa25x.h>
26 
27 #include "generic.h"
28 
29 #define GPIO_NAND_CS (5)
30 #define GPIO_NAND_ALE (4)
31 #define GPIO_NAND_CLE (3)
32 #define GPIO_NAND_RB (10)
33 
34 static unsigned long cmx255_pin_config[] = {
35  /* AC'97 */
40 
41  /* BTUART */
46 
47  /* STUART */
50 
51  /* LCD */
53 
54  /* SSP1 */
59 
60  /* SSP2 */
65 
66  /* PC Card */
77 
78  /* SDRAM and local bus */
84  GPIO18_RDY,
85 
86  /* GPIO */
88  GPIO9_GPIO, /* PC card reset */
89 
90  /* NAND controls */
91  GPIO5_GPIO | MFP_LPM_DRIVE_HIGH, /* NAND CE# */
92  GPIO4_GPIO | MFP_LPM_DRIVE_LOW, /* NAND ALE */
93  GPIO3_GPIO | MFP_LPM_DRIVE_LOW, /* NAND CLE */
94  GPIO10_GPIO, /* NAND Ready/Busy */
95 
96  /* interrupts */
97  GPIO22_GPIO, /* DM9000 interrupt */
98 };
99 
100 #if defined(CONFIG_SPI_PXA2XX)
101 static struct pxa2xx_spi_master pxa_ssp_master_info = {
102  .num_chipselect = 1,
103 };
104 
105 static struct spi_board_info spi_board_info[] __initdata = {
106  [0] = {
107  .modalias = "rtc-max6902",
108  .max_speed_hz = 1000000,
109  .bus_num = 1,
110  .chip_select = 0,
111  },
112 };
113 
114 static void __init cmx255_init_rtc(void)
115 {
116  pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
118 }
119 #else
120 static inline void cmx255_init_rtc(void) {}
121 #endif
122 
123 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
124 static struct mtd_partition cmx255_nor_partitions[] = {
125  {
126  .name = "ARMmon",
127  .size = 0x00030000,
128  .offset = 0,
129  .mask_flags = MTD_WRITEABLE /* force read-only */
130  } , {
131  .name = "ARMmon setup block",
132  .size = 0x00010000,
133  .offset = MTDPART_OFS_APPEND,
134  .mask_flags = MTD_WRITEABLE /* force read-only */
135  } , {
136  .name = "kernel",
137  .size = 0x00160000,
138  .offset = MTDPART_OFS_APPEND,
139  } , {
140  .name = "ramdisk",
141  .size = MTDPART_SIZ_FULL,
142  .offset = MTDPART_OFS_APPEND
143  }
144 };
145 
146 static struct physmap_flash_data cmx255_nor_flash_data[] = {
147  {
148  .width = 2, /* bankwidth in bytes */
149  .parts = cmx255_nor_partitions,
150  .nr_parts = ARRAY_SIZE(cmx255_nor_partitions)
151  }
152 };
153 
154 static struct resource cmx255_nor_resource = {
155  .start = PXA_CS0_PHYS,
156  .end = PXA_CS0_PHYS + SZ_8M - 1,
157  .flags = IORESOURCE_MEM,
158 };
159 
160 static struct platform_device cmx255_nor = {
161  .name = "physmap-flash",
162  .id = -1,
163  .dev = {
164  .platform_data = cmx255_nor_flash_data,
165  },
166  .resource = &cmx255_nor_resource,
167  .num_resources = 1,
168 };
169 
170 static void __init cmx255_init_nor(void)
171 {
172  platform_device_register(&cmx255_nor);
173 }
174 #else
175 static inline void cmx255_init_nor(void) {}
176 #endif
177 
178 #if defined(CONFIG_MTD_NAND_GPIO) || defined(CONFIG_MTD_NAND_GPIO_MODULE)
179 static struct resource cmx255_nand_resource[] = {
180  [0] = {
181  .start = PXA_CS1_PHYS,
182  .end = PXA_CS1_PHYS + 11,
183  .flags = IORESOURCE_MEM,
184  },
185  [1] = {
186  .start = PXA_CS5_PHYS,
187  .end = PXA_CS5_PHYS + 3,
188  .flags = IORESOURCE_MEM,
189  },
190 };
191 
192 static struct mtd_partition cmx255_nand_parts[] = {
193  [0] = {
194  .name = "cmx255-nand",
195  .size = MTDPART_SIZ_FULL,
196  .offset = 0,
197  },
198 };
199 
200 static struct gpio_nand_platdata cmx255_nand_platdata = {
202  .gpio_cle = GPIO_NAND_CLE,
203  .gpio_ale = GPIO_NAND_ALE,
204  .gpio_rdy = GPIO_NAND_RB,
205  .gpio_nwp = -1,
206  .parts = cmx255_nand_parts,
207  .num_parts = ARRAY_SIZE(cmx255_nand_parts),
208  .chip_delay = 25,
209 };
210 
211 static struct platform_device cmx255_nand = {
212  .name = "gpio-nand",
213  .num_resources = ARRAY_SIZE(cmx255_nand_resource),
214  .resource = cmx255_nand_resource,
215  .id = -1,
216  .dev = {
217  .platform_data = &cmx255_nand_platdata,
218  }
219 };
220 
221 static void __init cmx255_init_nand(void)
222 {
223  platform_device_register(&cmx255_nand);
224 }
225 #else
226 static inline void cmx255_init_nand(void) {}
227 #endif
228 
229 void __init cmx255_init(void)
230 {
231  pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx255_pin_config));
232 
233  cmx255_init_rtc();
234  cmx255_init_nor();
235  cmx255_init_nand();
236 }