2 * Versatile Express V2M Motherboard Support
4 #include <linux/device.h>
5 #include <linux/amba/bus.h>
6 #include <linux/amba/mmci.h>
8 #include <linux/init.h>
9 #include <linux/platform_device.h>
10 #include <linux/ata_platform.h>
11 #include <linux/smsc911x.h>
12 #include <linux/spinlock.h>
13 #include <linux/sysdev.h>
14 #include <linux/usb/isp1760.h>
15 #include <linux/clkdev.h>
16 #include <linux/mtd/physmap.h>
18 #include <asm/mach-types.h>
19 #include <asm/sizes.h>
20 #include <asm/mach/arch.h>
21 #include <asm/mach/map.h>
22 #include <asm/mach/time.h>
23 #include <asm/hardware/arm_timer.h>
24 #include <asm/hardware/timer-sp.h>
25 #include <asm/hardware/sp810.h>
27 #include <mach/ct-ca9x4.h>
28 #include <mach/motherboard.h>
30 #include <plat/sched_clock.h>
34 #define V2M_PA_CS0 0x40000000
35 #define V2M_PA_CS1 0x44000000
36 #define V2M_PA_CS2 0x48000000
37 #define V2M_PA_CS3 0x4c000000
38 #define V2M_PA_CS7 0x10000000
40 static struct map_desc v2m_io_desc[] __initdata = {
42 .virtual = __MMIO_P2V(V2M_PA_CS7),
43 .pfn = __phys_to_pfn(V2M_PA_CS7),
49 static void __init v2m_init_early(void)
51 ct_desc->init_early();
52 versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
55 static void __init v2m_timer_init(void)
59 /* Select 1MHz TIMCLK as the reference clock for SP804 timers */
60 scctrl = readl(MMIO_P2V(V2M_SYSCTL + SCCTRL));
61 scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK;
62 scctrl |= SCCTRL_TIMEREN1SEL_TIMCLK;
63 writel(scctrl, MMIO_P2V(V2M_SYSCTL + SCCTRL));
65 writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
66 writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);
68 sp804_clocksource_init(MMIO_P2V(V2M_TIMER1));
69 sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0);
72 static struct sys_timer v2m_timer = {
73 .init = v2m_timer_init,
77 static DEFINE_SPINLOCK(v2m_cfg_lock);
79 int v2m_cfg_write(u32 devfn, u32 data)
81 /* Configuration interface broken? */
84 printk("%s: writing %08x to %08x\n", __func__, data, devfn);
86 devfn |= SYS_CFG_START | SYS_CFG_WRITE;
88 spin_lock(&v2m_cfg_lock);
89 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
90 writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));
92 writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
93 writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
96 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
98 spin_unlock(&v2m_cfg_lock);
100 return !!(val & SYS_CFG_ERR);
103 int v2m_cfg_read(u32 devfn, u32 *data)
107 devfn |= SYS_CFG_START;
109 spin_lock(&v2m_cfg_lock);
110 writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
111 writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
117 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
120 *data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
121 spin_unlock(&v2m_cfg_lock);
123 return !!(val & SYS_CFG_ERR);
127 static struct resource v2m_pcie_i2c_resource = {
128 .start = V2M_SERIAL_BUS_PCI,
129 .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
130 .flags = IORESOURCE_MEM,
133 static struct platform_device v2m_pcie_i2c_device = {
134 .name = "versatile-i2c",
137 .resource = &v2m_pcie_i2c_resource,
140 static struct resource v2m_ddc_i2c_resource = {
141 .start = V2M_SERIAL_BUS_DVI,
142 .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
143 .flags = IORESOURCE_MEM,
146 static struct platform_device v2m_ddc_i2c_device = {
147 .name = "versatile-i2c",
150 .resource = &v2m_ddc_i2c_resource,
153 static struct resource v2m_eth_resources[] = {
155 .start = V2M_LAN9118,
156 .end = V2M_LAN9118 + SZ_64K - 1,
157 .flags = IORESOURCE_MEM,
159 .start = IRQ_V2M_LAN9118,
160 .end = IRQ_V2M_LAN9118,
161 .flags = IORESOURCE_IRQ,
165 static struct smsc911x_platform_config v2m_eth_config = {
166 .flags = SMSC911X_USE_32BIT,
167 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
168 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
169 .phy_interface = PHY_INTERFACE_MODE_MII,
172 static struct platform_device v2m_eth_device = {
175 .resource = v2m_eth_resources,
176 .num_resources = ARRAY_SIZE(v2m_eth_resources),
177 .dev.platform_data = &v2m_eth_config,
180 static struct resource v2m_usb_resources[] = {
182 .start = V2M_ISP1761,
183 .end = V2M_ISP1761 + SZ_128K - 1,
184 .flags = IORESOURCE_MEM,
186 .start = IRQ_V2M_ISP1761,
187 .end = IRQ_V2M_ISP1761,
188 .flags = IORESOURCE_IRQ,
192 static struct isp1760_platform_data v2m_usb_config = {
194 .bus_width_16 = false,
197 .dack_polarity_high = false,
198 .dreq_polarity_high = false,
201 static struct platform_device v2m_usb_device = {
204 .resource = v2m_usb_resources,
205 .num_resources = ARRAY_SIZE(v2m_usb_resources),
206 .dev.platform_data = &v2m_usb_config,
209 static void v2m_flash_set_vpp(struct map_info *map, int on)
211 writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
214 static struct physmap_flash_data v2m_flash_data = {
216 .set_vpp = v2m_flash_set_vpp,
219 static struct resource v2m_flash_resources[] = {
222 .end = V2M_NOR0 + SZ_64M - 1,
223 .flags = IORESOURCE_MEM,
226 .end = V2M_NOR1 + SZ_64M - 1,
227 .flags = IORESOURCE_MEM,
231 static struct platform_device v2m_flash_device = {
232 .name = "physmap-flash",
234 .resource = v2m_flash_resources,
235 .num_resources = ARRAY_SIZE(v2m_flash_resources),
236 .dev.platform_data = &v2m_flash_data,
239 static struct pata_platform_info v2m_pata_data = {
243 static struct resource v2m_pata_resources[] = {
246 .end = V2M_CF + 0xff,
247 .flags = IORESOURCE_MEM,
249 .start = V2M_CF + 0x100,
250 .end = V2M_CF + SZ_4K - 1,
251 .flags = IORESOURCE_MEM,
255 static struct platform_device v2m_cf_device = {
256 .name = "pata_platform",
258 .resource = v2m_pata_resources,
259 .num_resources = ARRAY_SIZE(v2m_pata_resources),
260 .dev.platform_data = &v2m_pata_data,
263 static unsigned int v2m_mmci_status(struct device *dev)
265 return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
268 static struct mmci_platform_data v2m_mmci_data = {
269 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
270 .status = v2m_mmci_status,
273 static AMBA_DEVICE(aaci, "mb:aaci", V2M_AACI, NULL);
274 static AMBA_DEVICE(mmci, "mb:mmci", V2M_MMCI, &v2m_mmci_data);
275 static AMBA_DEVICE(kmi0, "mb:kmi0", V2M_KMI0, NULL);
276 static AMBA_DEVICE(kmi1, "mb:kmi1", V2M_KMI1, NULL);
277 static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
278 static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
279 static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
280 static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
281 static AMBA_DEVICE(wdt, "mb:wdt", V2M_WDT, NULL);
282 static AMBA_DEVICE(rtc, "mb:rtc", V2M_RTC, NULL);
284 static struct amba_device *v2m_amba_devs[] __initdata = {
298 static long v2m_osc_round(struct clk *clk, unsigned long rate)
303 static int v2m_osc1_set(struct clk *clk, unsigned long rate)
305 return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
308 static const struct clk_ops osc1_clk_ops = {
309 .round = v2m_osc_round,
313 static struct clk osc1_clk = {
314 .ops = &osc1_clk_ops,
318 static struct clk osc2_clk = {
322 static struct clk dummy_apb_pclk;
324 static struct clk_lookup v2m_lookups[] = {
325 { /* AMBA bus clock */
326 .con_id = "apb_pclk",
327 .clk = &dummy_apb_pclk,
329 .dev_id = "mb:uart0",
332 .dev_id = "mb:uart1",
335 .dev_id = "mb:uart2",
338 .dev_id = "mb:uart3",
355 static void v2m_power_off(void)
357 if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
358 printk(KERN_EMERG "Unable to shutdown\n");
361 static void v2m_restart(char str, const char *cmd)
363 if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
364 printk(KERN_EMERG "Unable to reboot\n");
367 struct ct_desc *ct_desc;
369 static struct ct_desc *ct_descs[] __initdata = {
370 #ifdef CONFIG_ARCH_VEXPRESS_CA9X4
375 static void __init v2m_populate_ct_desc(void)
381 current_tile_id = readl(MMIO_P2V(V2M_SYS_PROCID0)) & V2M_CT_ID_MASK;
383 for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i)
384 if (ct_descs[i]->id == current_tile_id)
385 ct_desc = ct_descs[i];
388 panic("vexpress: failed to populate core tile description "
389 "for tile ID 0x%8x\n", current_tile_id);
392 static void __init v2m_map_io(void)
394 iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
395 v2m_populate_ct_desc();
399 static void __init v2m_init_irq(void)
404 static void __init v2m_init(void)
408 clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
410 platform_device_register(&v2m_pcie_i2c_device);
411 platform_device_register(&v2m_ddc_i2c_device);
412 platform_device_register(&v2m_flash_device);
413 platform_device_register(&v2m_cf_device);
414 platform_device_register(&v2m_eth_device);
415 platform_device_register(&v2m_usb_device);
417 for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
418 amba_device_register(v2m_amba_devs[i], &iomem_resource);
420 pm_power_off = v2m_power_off;
421 arm_pm_restart = v2m_restart;
423 ct_desc->init_tile();
426 MACHINE_START(VEXPRESS, "ARM-Versatile Express")
427 .boot_params = PLAT_PHYS_OFFSET + 0x00000100,
428 .map_io = v2m_map_io,
429 .init_early = v2m_init_early,
430 .init_irq = v2m_init_irq,
432 .init_machine = v2m_init,