2 * Versatile Express V2M Motherboard Support
4 #include <linux/clocksource.h>
5 #include <linux/device.h>
6 #include <linux/amba/bus.h>
7 #include <linux/amba/mmci.h>
9 #include <linux/clocksource.h>
10 #include <linux/smp.h>
11 #include <linux/init.h>
12 #include <linux/of_address.h>
13 #include <linux/of_fdt.h>
14 #include <linux/of_irq.h>
15 #include <linux/of_platform.h>
16 #include <linux/platform_device.h>
17 #include <linux/ata_platform.h>
18 #include <linux/smsc911x.h>
19 #include <linux/spinlock.h>
20 #include <linux/usb/isp1760.h>
21 #include <linux/mtd/physmap.h>
22 #include <linux/regulator/fixed.h>
23 #include <linux/regulator/machine.h>
24 #include <linux/vexpress.h>
25 #include <linux/clk-provider.h>
26 #include <linux/clkdev.h>
28 #include <asm/mach-types.h>
29 #include <asm/sizes.h>
30 #include <asm/mach/arch.h>
31 #include <asm/mach/map.h>
32 #include <asm/mach/time.h>
33 #include <asm/hardware/arm_timer.h>
34 #include <asm/hardware/cache-l2x0.h>
35 #include <asm/hardware/timer-sp.h>
37 #include <mach/ct-ca9x4.h>
38 #include <mach/motherboard.h>
40 #include <plat/sched_clock.h>
41 #include <plat/platsmp.h>
45 #define V2M_PA_CS0 0x40000000
46 #define V2M_PA_CS1 0x44000000
47 #define V2M_PA_CS2 0x48000000
48 #define V2M_PA_CS3 0x4c000000
49 #define V2M_PA_CS7 0x10000000
51 static struct map_desc v2m_io_desc[] __initdata = {
53 .virtual = V2M_PERIPH,
54 .pfn = __phys_to_pfn(V2M_PA_CS7),
60 static void __init v2m_sp804_init(void __iomem *base, unsigned int irq)
62 if (WARN_ON(!base || irq == NO_IRQ))
65 sp804_clocksource_init(base + TIMER_2_BASE, "v2m-timer1");
66 sp804_clockevents_init(base + TIMER_1_BASE, irq, "v2m-timer0");
70 static struct resource v2m_pcie_i2c_resource = {
71 .start = V2M_SERIAL_BUS_PCI,
72 .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
73 .flags = IORESOURCE_MEM,
76 static struct platform_device v2m_pcie_i2c_device = {
77 .name = "versatile-i2c",
80 .resource = &v2m_pcie_i2c_resource,
83 static struct resource v2m_ddc_i2c_resource = {
84 .start = V2M_SERIAL_BUS_DVI,
85 .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
86 .flags = IORESOURCE_MEM,
89 static struct platform_device v2m_ddc_i2c_device = {
90 .name = "versatile-i2c",
93 .resource = &v2m_ddc_i2c_resource,
96 static struct resource v2m_eth_resources[] = {
99 .end = V2M_LAN9118 + SZ_64K - 1,
100 .flags = IORESOURCE_MEM,
102 .start = IRQ_V2M_LAN9118,
103 .end = IRQ_V2M_LAN9118,
104 .flags = IORESOURCE_IRQ,
108 static struct smsc911x_platform_config v2m_eth_config = {
109 .flags = SMSC911X_USE_32BIT,
110 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
111 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
112 .phy_interface = PHY_INTERFACE_MODE_MII,
115 static struct platform_device v2m_eth_device = {
118 .resource = v2m_eth_resources,
119 .num_resources = ARRAY_SIZE(v2m_eth_resources),
120 .dev.platform_data = &v2m_eth_config,
123 static struct regulator_consumer_supply v2m_eth_supplies[] = {
124 REGULATOR_SUPPLY("vddvario", "smsc911x"),
125 REGULATOR_SUPPLY("vdd33a", "smsc911x"),
128 static struct resource v2m_usb_resources[] = {
130 .start = V2M_ISP1761,
131 .end = V2M_ISP1761 + SZ_128K - 1,
132 .flags = IORESOURCE_MEM,
134 .start = IRQ_V2M_ISP1761,
135 .end = IRQ_V2M_ISP1761,
136 .flags = IORESOURCE_IRQ,
140 static struct isp1760_platform_data v2m_usb_config = {
142 .bus_width_16 = false,
145 .dack_polarity_high = false,
146 .dreq_polarity_high = false,
149 static struct platform_device v2m_usb_device = {
152 .resource = v2m_usb_resources,
153 .num_resources = ARRAY_SIZE(v2m_usb_resources),
154 .dev.platform_data = &v2m_usb_config,
157 static struct physmap_flash_data v2m_flash_data = {
161 static struct resource v2m_flash_resources[] = {
164 .end = V2M_NOR0 + SZ_64M - 1,
165 .flags = IORESOURCE_MEM,
168 .end = V2M_NOR1 + SZ_64M - 1,
169 .flags = IORESOURCE_MEM,
173 static struct platform_device v2m_flash_device = {
174 .name = "physmap-flash",
176 .resource = v2m_flash_resources,
177 .num_resources = ARRAY_SIZE(v2m_flash_resources),
178 .dev.platform_data = &v2m_flash_data,
181 static struct pata_platform_info v2m_pata_data = {
185 static struct resource v2m_pata_resources[] = {
188 .end = V2M_CF + 0xff,
189 .flags = IORESOURCE_MEM,
191 .start = V2M_CF + 0x100,
192 .end = V2M_CF + SZ_4K - 1,
193 .flags = IORESOURCE_MEM,
197 static struct platform_device v2m_cf_device = {
198 .name = "pata_platform",
200 .resource = v2m_pata_resources,
201 .num_resources = ARRAY_SIZE(v2m_pata_resources),
202 .dev.platform_data = &v2m_pata_data,
205 static struct mmci_platform_data v2m_mmci_data = {
206 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
207 .gpio_wp = VEXPRESS_GPIO_MMC_WPROT,
208 .gpio_cd = VEXPRESS_GPIO_MMC_CARDIN,
211 static struct resource v2m_sysreg_resources[] = {
213 .start = V2M_SYSREGS,
214 .end = V2M_SYSREGS + 0xfff,
215 .flags = IORESOURCE_MEM,
219 static struct platform_device v2m_sysreg_device = {
220 .name = "vexpress-sysreg",
222 .resource = v2m_sysreg_resources,
223 .num_resources = ARRAY_SIZE(v2m_sysreg_resources),
226 static struct platform_device v2m_muxfpga_device = {
227 .name = "vexpress-muxfpga",
230 .resource = (struct resource []) {
231 VEXPRESS_RES_FUNC(0, 7),
235 static struct platform_device v2m_shutdown_device = {
236 .name = "vexpress-shutdown",
239 .resource = (struct resource []) {
240 VEXPRESS_RES_FUNC(0, 8),
244 static struct platform_device v2m_reboot_device = {
245 .name = "vexpress-reboot",
248 .resource = (struct resource []) {
249 VEXPRESS_RES_FUNC(0, 9),
253 static struct platform_device v2m_dvimode_device = {
254 .name = "vexpress-dvimode",
257 .resource = (struct resource []) {
258 VEXPRESS_RES_FUNC(0, 11),
262 static AMBA_APB_DEVICE(aaci, "mb:aaci", 0, V2M_AACI, IRQ_V2M_AACI, NULL);
263 static AMBA_APB_DEVICE(mmci, "mb:mmci", 0, V2M_MMCI, IRQ_V2M_MMCI, &v2m_mmci_data);
264 static AMBA_APB_DEVICE(kmi0, "mb:kmi0", 0, V2M_KMI0, IRQ_V2M_KMI0, NULL);
265 static AMBA_APB_DEVICE(kmi1, "mb:kmi1", 0, V2M_KMI1, IRQ_V2M_KMI1, NULL);
266 static AMBA_APB_DEVICE(uart0, "mb:uart0", 0, V2M_UART0, IRQ_V2M_UART0, NULL);
267 static AMBA_APB_DEVICE(uart1, "mb:uart1", 0, V2M_UART1, IRQ_V2M_UART1, NULL);
268 static AMBA_APB_DEVICE(uart2, "mb:uart2", 0, V2M_UART2, IRQ_V2M_UART2, NULL);
269 static AMBA_APB_DEVICE(uart3, "mb:uart3", 0, V2M_UART3, IRQ_V2M_UART3, NULL);
270 static AMBA_APB_DEVICE(wdt, "mb:wdt", 0, V2M_WDT, IRQ_V2M_WDT, NULL);
271 static AMBA_APB_DEVICE(rtc, "mb:rtc", 0, V2M_RTC, IRQ_V2M_RTC, NULL);
273 static struct amba_device *v2m_amba_devs[] __initdata = {
286 static void __init v2m_timer_init(void)
288 vexpress_clk_init(ioremap(V2M_SYSCTL, SZ_4K));
289 v2m_sp804_init(ioremap(V2M_TIMER01, SZ_4K), IRQ_V2M_TIMER0);
292 static void __init v2m_init_early(void)
294 if (ct_desc->init_early)
295 ct_desc->init_early();
296 versatile_sched_clock_init(vexpress_get_24mhz_clock_base(), 24000000);
299 struct ct_desc *ct_desc;
301 static struct ct_desc *ct_descs[] __initdata = {
302 #ifdef CONFIG_ARCH_VEXPRESS_CA9X4
307 static void __init v2m_populate_ct_desc(void)
313 current_tile_id = vexpress_get_procid(VEXPRESS_SITE_MASTER)
316 for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i)
317 if (ct_descs[i]->id == current_tile_id)
318 ct_desc = ct_descs[i];
321 panic("vexpress: this kernel does not support core tile ID 0x%08x when booting via ATAGs.\n"
322 "You may need a device tree blob or a different kernel to boot on this board.\n",
326 static void __init v2m_map_io(void)
328 iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
329 vexpress_sysreg_early_init(ioremap(V2M_SYSREGS, SZ_4K));
330 v2m_populate_ct_desc();
334 static void __init v2m_init_irq(void)
339 static void __init v2m_init(void)
343 regulator_register_fixed(0, v2m_eth_supplies,
344 ARRAY_SIZE(v2m_eth_supplies));
346 platform_device_register(&v2m_muxfpga_device);
347 platform_device_register(&v2m_shutdown_device);
348 platform_device_register(&v2m_reboot_device);
349 platform_device_register(&v2m_dvimode_device);
351 platform_device_register(&v2m_sysreg_device);
352 platform_device_register(&v2m_pcie_i2c_device);
353 platform_device_register(&v2m_ddc_i2c_device);
354 platform_device_register(&v2m_flash_device);
355 platform_device_register(&v2m_cf_device);
356 platform_device_register(&v2m_eth_device);
357 platform_device_register(&v2m_usb_device);
359 for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
360 amba_device_register(v2m_amba_devs[i], &iomem_resource);
362 ct_desc->init_tile();
365 MACHINE_START(VEXPRESS, "ARM-Versatile Express")
366 .atag_offset = 0x100,
367 .smp = smp_ops(vexpress_smp_ops),
368 .map_io = v2m_map_io,
369 .init_early = v2m_init_early,
370 .init_irq = v2m_init_irq,
371 .init_time = v2m_timer_init,
372 .init_machine = v2m_init,
375 static struct map_desc v2m_rs1_io_desc __initdata = {
376 .virtual = V2M_PERIPH,
377 .pfn = __phys_to_pfn(0x1c000000),
382 static int __init v2m_dt_scan_memory_map(unsigned long node, const char *uname,
383 int depth, void *data)
385 const char **map = data;
387 if (strcmp(uname, "motherboard") != 0)
390 *map = of_get_flat_dt_prop(node, "arm,v2m-memory-map", NULL);
395 void __init v2m_dt_map_io(void)
397 const char *map = NULL;
399 of_scan_flat_dt(v2m_dt_scan_memory_map, &map);
401 if (map && strcmp(map, "rs1") == 0)
402 iotable_init(&v2m_rs1_io_desc, 1);
404 iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
406 #if defined(CONFIG_SMP)
407 vexpress_dt_smp_map_io();
411 void __init v2m_dt_init_early(void)
415 vexpress_sysreg_of_early_init();
417 /* Confirm board type against DT property, if available */
418 if (of_property_read_u32(of_allnodes, "arm,hbi", &dt_hbi) == 0) {
419 u32 hbi = vexpress_get_hbi(VEXPRESS_SITE_MASTER);
421 if (WARN_ON(dt_hbi != hbi))
422 pr_warning("vexpress: DT HBI (%x) is not matching "
423 "hardware (%x)!\n", dt_hbi, hbi);
427 static void __init v2m_dt_timer_init(void)
431 clocksource_of_init();
433 versatile_sched_clock_init(vexpress_get_24mhz_clock_base(),
437 static const struct of_device_id v2m_dt_bus_match[] __initconst = {
438 { .compatible = "simple-bus", },
439 { .compatible = "arm,amba-bus", },
440 { .compatible = "arm,vexpress,config-bus", },
444 static void __init v2m_dt_init(void)
446 l2x0_of_init(0x00400000, 0xfe0fffff);
447 of_platform_populate(NULL, v2m_dt_bus_match, NULL, NULL);
450 static const char * const v2m_dt_match[] __initconst = {
455 DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
456 .dt_compat = v2m_dt_match,
457 .smp = smp_ops(vexpress_smp_ops),
458 .smp_init = smp_init_ops(vexpress_smp_init_ops),
459 .map_io = v2m_dt_map_io,
460 .init_early = v2m_dt_init_early,
461 .init_time = v2m_dt_timer_init,
462 .init_machine = v2m_dt_init,