1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * arch/arm/mach-ixp4xx/ixdp425-setup.c
4 *
5 * IXDP425/IXCDP1100 board-setup
6 *
7 * Copyright (C) 2003-2005 MontaVista Software, Inc.
8 *
9 * Author: Deepak Saxena <dsaxena@plexity.net>
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/device.h>
15 #include <linux/serial.h>
16 #include <linux/tty.h>
17 #include <linux/serial_8250.h>
18 #include <linux/gpio/machine.h>
19 #include <linux/io.h>
20 #include <linux/mtd/mtd.h>
21 #include <linux/mtd/rawnand.h>
22 #include <linux/mtd/partitions.h>
23 #include <linux/mtd/platnand.h>
24 #include <linux/delay.h>
25 #include <linux/gpio.h>
26 #include <asm/types.h>
27 #include <asm/setup.h>
28 #include <asm/memory.h>
29 #include <mach/hardware.h>
30 #include <asm/mach-types.h>
31 #include <asm/irq.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/flash.h>
34
35 #include "irqs.h"
36
37 #define IXDP425_SDA_PIN 7
38 #define IXDP425_SCL_PIN 6
39
40 /* NAND Flash pins */
41 #define IXDP425_NAND_NCE_PIN 12
42
43 #define IXDP425_NAND_CMD_BYTE 0x01
44 #define IXDP425_NAND_ADDR_BYTE 0x02
45
46 static struct flash_platform_data ixdp425_flash_data = {
47 .map_name = "cfi_probe",
48 .width = 2,
49 };
50
51 static struct resource ixdp425_flash_resource = {
52 .flags = IORESOURCE_MEM,
53 };
54
55 static struct platform_device ixdp425_flash = {
56 .name = "IXP4XX-Flash",
57 .id = 0,
58 .dev = {
59 .platform_data = &ixdp425_flash_data,
60 },
61 .num_resources = 1,
62 .resource = &ixdp425_flash_resource,
63 };
64
65 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
66 defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
67
68 static struct mtd_partition ixdp425_partitions[] = {
69 {
70 .name = "ixp400 NAND FS 0",
71 .offset = 0,
72 .size = SZ_8M
73 }, {
74 .name = "ixp400 NAND FS 1",
75 .offset = MTDPART_OFS_APPEND,
76 .size = MTDPART_SIZ_FULL
77 },
78 };
79
80 static void
ixdp425_flash_nand_cmd_ctrl(struct nand_chip * this,int cmd,unsigned int ctrl)81 ixdp425_flash_nand_cmd_ctrl(struct nand_chip *this, int cmd, unsigned int ctrl)
82 {
83 int offset = (int)nand_get_controller_data(this);
84
85 if (ctrl & NAND_CTRL_CHANGE) {
86 if (ctrl & NAND_NCE) {
87 gpio_set_value(IXDP425_NAND_NCE_PIN, 0);
88 udelay(5);
89 } else
90 gpio_set_value(IXDP425_NAND_NCE_PIN, 1);
91
92 offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
93 offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
94 nand_set_controller_data(this, (void *)offset);
95 }
96
97 if (cmd != NAND_CMD_NONE)
98 writeb(cmd, this->legacy.IO_ADDR_W + offset);
99 }
100
101 static struct platform_nand_data ixdp425_flash_nand_data = {
102 .chip = {
103 .nr_chips = 1,
104 .chip_delay = 30,
105 .partitions = ixdp425_partitions,
106 .nr_partitions = ARRAY_SIZE(ixdp425_partitions),
107 },
108 .ctrl = {
109 .cmd_ctrl = ixdp425_flash_nand_cmd_ctrl
110 }
111 };
112
113 static struct resource ixdp425_flash_nand_resource = {
114 .flags = IORESOURCE_MEM,
115 };
116
117 static struct platform_device ixdp425_flash_nand = {
118 .name = "gen_nand",
119 .id = -1,
120 .dev = {
121 .platform_data = &ixdp425_flash_nand_data,
122 },
123 .num_resources = 1,
124 .resource = &ixdp425_flash_nand_resource,
125 };
126 #endif /* CONFIG_MTD_NAND_PLATFORM */
127
128 static struct gpiod_lookup_table ixdp425_i2c_gpiod_table = {
129 .dev_id = "i2c-gpio.0",
130 .table = {
131 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SDA_PIN,
132 NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
133 GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SCL_PIN,
134 NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
135 },
136 };
137
138 static struct platform_device ixdp425_i2c_gpio = {
139 .name = "i2c-gpio",
140 .id = 0,
141 .dev = {
142 .platform_data = NULL,
143 },
144 };
145
146 static struct resource ixdp425_uart_resources[] = {
147 {
148 .start = IXP4XX_UART1_BASE_PHYS,
149 .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
150 .flags = IORESOURCE_MEM
151 },
152 {
153 .start = IXP4XX_UART2_BASE_PHYS,
154 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
155 .flags = IORESOURCE_MEM
156 }
157 };
158
159 static struct plat_serial8250_port ixdp425_uart_data[] = {
160 {
161 .mapbase = IXP4XX_UART1_BASE_PHYS,
162 .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
163 .irq = IRQ_IXP4XX_UART1,
164 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
165 .iotype = UPIO_MEM,
166 .regshift = 2,
167 .uartclk = IXP4XX_UART_XTAL,
168 },
169 {
170 .mapbase = IXP4XX_UART2_BASE_PHYS,
171 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
172 .irq = IRQ_IXP4XX_UART2,
173 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
174 .iotype = UPIO_MEM,
175 .regshift = 2,
176 .uartclk = IXP4XX_UART_XTAL,
177 },
178 { },
179 };
180
181 static struct platform_device ixdp425_uart = {
182 .name = "serial8250",
183 .id = PLAT8250_DEV_PLATFORM,
184 .dev.platform_data = ixdp425_uart_data,
185 .num_resources = 2,
186 .resource = ixdp425_uart_resources
187 };
188
189 /* Built-in 10/100 Ethernet MAC interfaces */
190 static struct eth_plat_info ixdp425_plat_eth[] = {
191 {
192 .phy = 0,
193 .rxq = 3,
194 .txreadyq = 20,
195 }, {
196 .phy = 1,
197 .rxq = 4,
198 .txreadyq = 21,
199 }
200 };
201
202 static struct platform_device ixdp425_eth[] = {
203 {
204 .name = "ixp4xx_eth",
205 .id = IXP4XX_ETH_NPEB,
206 .dev.platform_data = ixdp425_plat_eth,
207 }, {
208 .name = "ixp4xx_eth",
209 .id = IXP4XX_ETH_NPEC,
210 .dev.platform_data = ixdp425_plat_eth + 1,
211 }
212 };
213
214 static struct platform_device *ixdp425_devices[] __initdata = {
215 &ixdp425_i2c_gpio,
216 &ixdp425_flash,
217 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
218 defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
219 &ixdp425_flash_nand,
220 #endif
221 &ixdp425_uart,
222 &ixdp425_eth[0],
223 &ixdp425_eth[1],
224 };
225
ixdp425_init(void)226 static void __init ixdp425_init(void)
227 {
228 ixp4xx_sys_init();
229
230 ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
231 ixdp425_flash_resource.end =
232 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
233
234 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
235 defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
236 ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
237 ixdp425_flash_nand_resource.end = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
238
239 gpio_request(IXDP425_NAND_NCE_PIN, "NAND NCE pin");
240 gpio_direction_output(IXDP425_NAND_NCE_PIN, 0);
241
242 /* Configure expansion bus for NAND Flash */
243 *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |
244 IXP4XX_EXP_BUS_STROBE_T(1) | /* extend by 1 clock */
245 IXP4XX_EXP_BUS_CYCLES(0) | /* Intel cycles */
246 IXP4XX_EXP_BUS_SIZE(0) | /* 512bytes addr space*/
247 IXP4XX_EXP_BUS_WR_EN |
248 IXP4XX_EXP_BUS_BYTE_EN; /* 8 bit data bus */
249 #endif
250
251 if (cpu_is_ixp43x()) {
252 ixdp425_uart.num_resources = 1;
253 ixdp425_uart_data[1].flags = 0;
254 }
255
256 gpiod_add_lookup_table(&ixdp425_i2c_gpiod_table);
257 platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
258 }
259
260 #ifdef CONFIG_ARCH_IXDP425
261 MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
262 /* Maintainer: MontaVista Software, Inc. */
263 .map_io = ixp4xx_map_io,
264 .init_early = ixp4xx_init_early,
265 .init_irq = ixp4xx_init_irq,
266 .init_time = ixp4xx_timer_init,
267 .atag_offset = 0x100,
268 .init_machine = ixdp425_init,
269 #if defined(CONFIG_PCI)
270 .dma_zone_size = SZ_64M,
271 #endif
272 .restart = ixp4xx_restart,
273 MACHINE_END
274 #endif
275
276 #ifdef CONFIG_MACH_IXDP465
277 MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
278 /* Maintainer: MontaVista Software, Inc. */
279 .map_io = ixp4xx_map_io,
280 .init_early = ixp4xx_init_early,
281 .init_irq = ixp4xx_init_irq,
282 .init_time = ixp4xx_timer_init,
283 .atag_offset = 0x100,
284 .init_machine = ixdp425_init,
285 #if defined(CONFIG_PCI)
286 .dma_zone_size = SZ_64M,
287 #endif
288 MACHINE_END
289 #endif
290
291 #ifdef CONFIG_ARCH_PRPMC1100
292 MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
293 /* Maintainer: MontaVista Software, Inc. */
294 .map_io = ixp4xx_map_io,
295 .init_early = ixp4xx_init_early,
296 .init_irq = ixp4xx_init_irq,
297 .init_time = ixp4xx_timer_init,
298 .atag_offset = 0x100,
299 .init_machine = ixdp425_init,
300 #if defined(CONFIG_PCI)
301 .dma_zone_size = SZ_64M,
302 #endif
303 MACHINE_END
304 #endif
305
306 #ifdef CONFIG_MACH_KIXRP435
307 MACHINE_START(KIXRP435, "Intel KIXRP435 Reference Platform")
308 /* Maintainer: MontaVista Software, Inc. */
309 .map_io = ixp4xx_map_io,
310 .init_early = ixp4xx_init_early,
311 .init_irq = ixp4xx_init_irq,
312 .init_time = ixp4xx_timer_init,
313 .atag_offset = 0x100,
314 .init_machine = ixdp425_init,
315 #if defined(CONFIG_PCI)
316 .dma_zone_size = SZ_64M,
317 #endif
318 MACHINE_END
319 #endif
320