1 // SPDX-License-Identifier: GPL-2.0-only
2 /* linux/arch/arm/mach-pxa/xcep.c
3 *
4 * Support for the Iskratel Electronics XCEP platform as used in
5 * the Libera instruments from Instrumentation Technologies.
6 *
7 * Author: Ales Bardorfer <ales@i-tech.si>
8 * Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
9 * Contributions by: Matej Kenda <matej.kenda@i-tech.si>
10 * Created: June 2006
11 * Copyright: (C) 2006-2009 Instrumentation Technologies
12 */
13
14 #include <linux/platform_device.h>
15 #include <linux/i2c.h>
16 #include <linux/platform_data/i2c-pxa.h>
17 #include <linux/smc91x.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/partitions.h>
20 #include <linux/mtd/physmap.h>
21
22 #include <asm/mach-types.h>
23 #include <asm/mach/arch.h>
24 #include <asm/mach/irq.h>
25 #include <asm/mach/map.h>
26
27 #include <mach/hardware.h>
28 #include "pxa25x.h"
29 #include <mach/smemc.h>
30
31 #include "generic.h"
32 #include "devices.h"
33
34 #define XCEP_ETH_PHYS (PXA_CS3_PHYS + 0x00000300)
35 #define XCEP_ETH_PHYS_END (PXA_CS3_PHYS + 0x000fffff)
36 #define XCEP_ETH_ATTR (PXA_CS3_PHYS + 0x02000000)
37 #define XCEP_ETH_ATTR_END (PXA_CS3_PHYS + 0x020fffff)
38 #define XCEP_ETH_IRQ IRQ_GPIO0
39
40 /* XCEP CPLD base */
41 #define XCEP_CPLD_BASE 0xf0000000
42
43
44 /* Flash partitions. */
45
46 static struct mtd_partition xcep_partitions[] = {
47 {
48 .name = "Bootloader",
49 .size = 0x00040000,
50 .offset = 0,
51 .mask_flags = MTD_WRITEABLE
52 }, {
53 .name = "Bootloader ENV",
54 .size = 0x00040000,
55 .offset = 0x00040000,
56 .mask_flags = MTD_WRITEABLE
57 }, {
58 .name = "Kernel",
59 .size = 0x00100000,
60 .offset = 0x00080000,
61 }, {
62 .name = "Rescue fs",
63 .size = 0x00280000,
64 .offset = 0x00180000,
65 }, {
66 .name = "Filesystem",
67 .size = MTDPART_SIZ_FULL,
68 .offset = 0x00400000
69 }
70 };
71
72 static struct physmap_flash_data xcep_flash_data[] = {
73 {
74 .width = 4, /* bankwidth in bytes */
75 .parts = xcep_partitions,
76 .nr_parts = ARRAY_SIZE(xcep_partitions)
77 }
78 };
79
80 static struct resource flash_resource = {
81 .start = PXA_CS0_PHYS,
82 .end = PXA_CS0_PHYS + SZ_32M - 1,
83 .flags = IORESOURCE_MEM,
84 };
85
86 static struct platform_device flash_device = {
87 .name = "physmap-flash",
88 .id = 0,
89 .dev = {
90 .platform_data = xcep_flash_data,
91 },
92 .resource = &flash_resource,
93 .num_resources = 1,
94 };
95
96
97
98 /* SMC LAN91C111 network controller. */
99
100 static struct resource smc91x_resources[] = {
101 [0] = {
102 .name = "smc91x-regs",
103 .start = XCEP_ETH_PHYS,
104 .end = XCEP_ETH_PHYS_END,
105 .flags = IORESOURCE_MEM,
106 },
107 [1] = {
108 .start = XCEP_ETH_IRQ,
109 .end = XCEP_ETH_IRQ,
110 .flags = IORESOURCE_IRQ,
111 },
112 [2] = {
113 .name = "smc91x-attrib",
114 .start = XCEP_ETH_ATTR,
115 .end = XCEP_ETH_ATTR_END,
116 .flags = IORESOURCE_MEM,
117 },
118 };
119
120 static struct smc91x_platdata xcep_smc91x_info = {
121 .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
122 SMC91X_NOWAIT | SMC91X_USE_DMA,
123 };
124
125 static struct platform_device smc91x_device = {
126 .name = "smc91x",
127 .id = -1,
128 .num_resources = ARRAY_SIZE(smc91x_resources),
129 .resource = smc91x_resources,
130 .dev = {
131 .platform_data = &xcep_smc91x_info,
132 },
133 };
134
135
136 static struct platform_device *devices[] __initdata = {
137 &flash_device,
138 &smc91x_device,
139 };
140
141
142 /* We have to state that there are HWMON devices on the I2C bus on XCEP.
143 * Drivers for HWMON verify capabilities of the adapter when loading and
144 * refuse to attach if the adapter doesn't support HWMON class of devices. */
145 static struct i2c_pxa_platform_data xcep_i2c_platform_data = {
146 .class = I2C_CLASS_HWMON
147 };
148
149
150 static mfp_cfg_t xcep_pin_config[] __initdata = {
151 GPIO79_nCS_3, /* SMC 91C111 chip select. */
152 GPIO80_nCS_4, /* CPLD chip select. */
153 /* SSP communication to MSP430 */
154 GPIO23_SSP1_SCLK,
155 GPIO24_SSP1_SFRM,
156 GPIO25_SSP1_TXD,
157 GPIO26_SSP1_RXD,
158 GPIO27_SSP1_EXTCLK
159 };
160
xcep_init(void)161 static void __init xcep_init(void)
162 {
163 pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
164
165 pxa_set_ffuart_info(NULL);
166 pxa_set_btuart_info(NULL);
167 pxa_set_stuart_info(NULL);
168 pxa_set_hwuart_info(NULL);
169
170 /* See Intel XScale Developer's Guide for details */
171 /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
172 __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
173 /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
174 __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
175
176 platform_add_devices(ARRAY_AND_SIZE(devices));
177 pxa_set_i2c_info(&xcep_i2c_platform_data);
178 }
179
180 MACHINE_START(XCEP, "Iskratel XCEP")
181 .atag_offset = 0x100,
182 .init_machine = xcep_init,
183 .map_io = pxa25x_map_io,
184 .nr_irqs = PXA_NR_IRQS,
185 .init_irq = pxa25x_init_irq,
186 .handle_irq = pxa25x_handle_irq,
187 .init_time = pxa_timer_init,
188 .restart = pxa_restart,
189 MACHINE_END
190
191