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/smsc911x.h>
11 #include <linux/spinlock.h>
12 #include <linux/sysdev.h>
13 #include <linux/usb/isp1760.h>
14 #include <linux/clkdev.h>
16 #include <asm/sizes.h>
17 #include <asm/mach/flash.h>
18 #include <asm/mach/map.h>
19 #include <asm/mach/time.h>
20 #include <asm/hardware/arm_timer.h>
22 #include <mach/motherboard.h>
24 #include <plat/timer-sp.h>
28 #define V2M_PA_CS0 0x40000000
29 #define V2M_PA_CS1 0x44000000
30 #define V2M_PA_CS2 0x48000000
31 #define V2M_PA_CS3 0x4c000000
32 #define V2M_PA_CS7 0x10000000
34 static struct map_desc v2m_io_desc[] __initdata = {
36 .virtual = __MMIO_P2V(V2M_PA_CS7),
37 .pfn = __phys_to_pfn(V2M_PA_CS7),
43 void __init v2m_map_io(struct map_desc *tile, size_t num)
45 iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
46 iotable_init(tile, num);
50 static void __init v2m_timer_init(void)
52 writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
53 writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);
55 sp804_clocksource_init(MMIO_P2V(V2M_TIMER1));
56 sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0);
59 struct sys_timer v2m_timer = {
60 .init = v2m_timer_init,
64 static DEFINE_SPINLOCK(v2m_cfg_lock);
66 int v2m_cfg_write(u32 devfn, u32 data)
68 /* Configuration interface broken? */
71 printk("%s: writing %08x to %08x\n", __func__, data, devfn);
73 devfn |= SYS_CFG_START | SYS_CFG_WRITE;
75 spin_lock(&v2m_cfg_lock);
76 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
77 writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));
79 writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
80 writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
83 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
85 spin_unlock(&v2m_cfg_lock);
87 return !!(val & SYS_CFG_ERR);
90 int v2m_cfg_read(u32 devfn, u32 *data)
94 devfn |= SYS_CFG_START;
96 spin_lock(&v2m_cfg_lock);
97 writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
98 writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
104 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
107 *data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
108 spin_unlock(&v2m_cfg_lock);
110 return !!(val & SYS_CFG_ERR);
114 static struct resource v2m_pcie_i2c_resource = {
115 .start = V2M_SERIAL_BUS_PCI,
116 .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
117 .flags = IORESOURCE_MEM,
120 static struct platform_device v2m_pcie_i2c_device = {
121 .name = "versatile-i2c",
124 .resource = &v2m_pcie_i2c_resource,
127 static struct resource v2m_ddc_i2c_resource = {
128 .start = V2M_SERIAL_BUS_DVI,
129 .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
130 .flags = IORESOURCE_MEM,
133 static struct platform_device v2m_ddc_i2c_device = {
134 .name = "versatile-i2c",
137 .resource = &v2m_ddc_i2c_resource,
140 static struct resource v2m_eth_resources[] = {
142 .start = V2M_LAN9118,
143 .end = V2M_LAN9118 + SZ_64K - 1,
144 .flags = IORESOURCE_MEM,
146 .start = IRQ_V2M_LAN9118,
147 .end = IRQ_V2M_LAN9118,
148 .flags = IORESOURCE_IRQ,
152 static struct smsc911x_platform_config v2m_eth_config = {
153 .flags = SMSC911X_USE_32BIT,
154 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
155 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
156 .phy_interface = PHY_INTERFACE_MODE_MII,
159 static struct platform_device v2m_eth_device = {
162 .resource = v2m_eth_resources,
163 .num_resources = ARRAY_SIZE(v2m_eth_resources),
164 .dev.platform_data = &v2m_eth_config,
167 static struct resource v2m_usb_resources[] = {
169 .start = V2M_ISP1761,
170 .end = V2M_ISP1761 + SZ_128K - 1,
171 .flags = IORESOURCE_MEM,
173 .start = IRQ_V2M_ISP1761,
174 .end = IRQ_V2M_ISP1761,
175 .flags = IORESOURCE_IRQ,
179 static struct isp1760_platform_data v2m_usb_config = {
181 .bus_width_16 = false,
184 .dack_polarity_high = false,
185 .dreq_polarity_high = false,
188 static struct platform_device v2m_usb_device = {
191 .resource = v2m_usb_resources,
192 .num_resources = ARRAY_SIZE(v2m_usb_resources),
193 .dev.platform_data = &v2m_usb_config,
196 static int v2m_flash_init(void)
198 writel(0, MMIO_P2V(V2M_SYS_FLASH));
202 static void v2m_flash_exit(void)
204 writel(0, MMIO_P2V(V2M_SYS_FLASH));
207 static void v2m_flash_set_vpp(int on)
209 writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
212 static struct flash_platform_data v2m_flash_data = {
213 .map_name = "cfi_probe",
215 .init = v2m_flash_init,
216 .exit = v2m_flash_exit,
217 .set_vpp = v2m_flash_set_vpp,
220 static struct resource v2m_flash_resources[] = {
223 .end = V2M_NOR0 + SZ_64M - 1,
224 .flags = IORESOURCE_MEM,
227 .end = V2M_NOR1 + SZ_64M - 1,
228 .flags = IORESOURCE_MEM,
232 static struct platform_device v2m_flash_device = {
235 .resource = v2m_flash_resources,
236 .num_resources = ARRAY_SIZE(v2m_flash_resources),
237 .dev.platform_data = &v2m_flash_data,
241 static unsigned int v2m_mmci_status(struct device *dev)
243 return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
246 static struct mmci_platform_data v2m_mmci_data = {
247 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
248 .status = v2m_mmci_status,
251 static AMBA_DEVICE(aaci, "mb:aaci", V2M_AACI, NULL);
252 static AMBA_DEVICE(mmci, "mb:mmci", V2M_MMCI, &v2m_mmci_data);
253 static AMBA_DEVICE(kmi0, "mb:kmi0", V2M_KMI0, NULL);
254 static AMBA_DEVICE(kmi1, "mb:kmi1", V2M_KMI1, NULL);
255 static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
256 static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
257 static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
258 static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
259 static AMBA_DEVICE(wdt, "mb:wdt", V2M_WDT, NULL);
260 static AMBA_DEVICE(rtc, "mb:rtc", V2M_RTC, NULL);
262 static struct amba_device *v2m_amba_devs[] __initdata = {
276 static long v2m_osc_round(struct clk *clk, unsigned long rate)
281 static int v2m_osc1_set(struct clk *clk, unsigned long rate)
283 return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
286 static const struct clk_ops osc1_clk_ops = {
287 .round = v2m_osc_round,
291 static struct clk osc1_clk = {
292 .ops = &osc1_clk_ops,
296 static struct clk osc2_clk = {
300 static struct clk dummy_apb_pclk;
302 static struct clk_lookup v2m_lookups[] = {
303 { /* AMBA bus clock */
304 .con_id = "apb_pclk",
305 .clk = &dummy_apb_pclk,
307 .dev_id = "mb:uart0",
310 .dev_id = "mb:uart1",
313 .dev_id = "mb:uart2",
316 .dev_id = "mb:uart3",
333 static void v2m_power_off(void)
335 if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
336 printk(KERN_EMERG "Unable to shutdown\n");
339 static void v2m_restart(char str, const char *cmd)
341 if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
342 printk(KERN_EMERG "Unable to reboot\n");
345 static int __init v2m_init(void)
349 clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
351 platform_device_register(&v2m_pcie_i2c_device);
352 platform_device_register(&v2m_ddc_i2c_device);
353 platform_device_register(&v2m_flash_device);
354 platform_device_register(&v2m_eth_device);
355 platform_device_register(&v2m_usb_device);
357 for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
358 amba_device_register(v2m_amba_devs[i], &iomem_resource);
360 pm_power_off = v2m_power_off;
361 arm_pm_restart = v2m_restart;
365 arch_initcall(v2m_init);