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>
21 #include <asm/hardware/timer-sp.h>
23 #include <mach/motherboard.h>
25 #include <plat/sched_clock.h>
29 #define V2M_PA_CS0 0x40000000
30 #define V2M_PA_CS1 0x44000000
31 #define V2M_PA_CS2 0x48000000
32 #define V2M_PA_CS3 0x4c000000
33 #define V2M_PA_CS7 0x10000000
35 static struct map_desc v2m_io_desc
[] __initdata
= {
37 .virtual = __MMIO_P2V(V2M_PA_CS7
),
38 .pfn
= __phys_to_pfn(V2M_PA_CS7
),
44 void __init
v2m_map_io(struct map_desc
*tile
, size_t num
)
46 iotable_init(v2m_io_desc
, ARRAY_SIZE(v2m_io_desc
));
47 iotable_init(tile
, num
);
51 static void __init
v2m_timer_init(void)
53 versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ
), 24000000);
55 writel(0, MMIO_P2V(V2M_TIMER0
) + TIMER_CTRL
);
56 writel(0, MMIO_P2V(V2M_TIMER1
) + TIMER_CTRL
);
58 sp804_clocksource_init(MMIO_P2V(V2M_TIMER1
));
59 sp804_clockevents_init(MMIO_P2V(V2M_TIMER0
), IRQ_V2M_TIMER0
);
62 struct sys_timer v2m_timer
= {
63 .init
= v2m_timer_init
,
67 static DEFINE_SPINLOCK(v2m_cfg_lock
);
69 int v2m_cfg_write(u32 devfn
, u32 data
)
71 /* Configuration interface broken? */
74 printk("%s: writing %08x to %08x\n", __func__
, data
, devfn
);
76 devfn
|= SYS_CFG_START
| SYS_CFG_WRITE
;
78 spin_lock(&v2m_cfg_lock
);
79 val
= readl(MMIO_P2V(V2M_SYS_CFGSTAT
));
80 writel(val
& ~SYS_CFG_COMPLETE
, MMIO_P2V(V2M_SYS_CFGSTAT
));
82 writel(data
, MMIO_P2V(V2M_SYS_CFGDATA
));
83 writel(devfn
, MMIO_P2V(V2M_SYS_CFGCTRL
));
86 val
= readl(MMIO_P2V(V2M_SYS_CFGSTAT
));
88 spin_unlock(&v2m_cfg_lock
);
90 return !!(val
& SYS_CFG_ERR
);
93 int v2m_cfg_read(u32 devfn
, u32
*data
)
97 devfn
|= SYS_CFG_START
;
99 spin_lock(&v2m_cfg_lock
);
100 writel(0, MMIO_P2V(V2M_SYS_CFGSTAT
));
101 writel(devfn
, MMIO_P2V(V2M_SYS_CFGCTRL
));
107 val
= readl(MMIO_P2V(V2M_SYS_CFGSTAT
));
110 *data
= readl(MMIO_P2V(V2M_SYS_CFGDATA
));
111 spin_unlock(&v2m_cfg_lock
);
113 return !!(val
& SYS_CFG_ERR
);
117 static struct resource v2m_pcie_i2c_resource
= {
118 .start
= V2M_SERIAL_BUS_PCI
,
119 .end
= V2M_SERIAL_BUS_PCI
+ SZ_4K
- 1,
120 .flags
= IORESOURCE_MEM
,
123 static struct platform_device v2m_pcie_i2c_device
= {
124 .name
= "versatile-i2c",
127 .resource
= &v2m_pcie_i2c_resource
,
130 static struct resource v2m_ddc_i2c_resource
= {
131 .start
= V2M_SERIAL_BUS_DVI
,
132 .end
= V2M_SERIAL_BUS_DVI
+ SZ_4K
- 1,
133 .flags
= IORESOURCE_MEM
,
136 static struct platform_device v2m_ddc_i2c_device
= {
137 .name
= "versatile-i2c",
140 .resource
= &v2m_ddc_i2c_resource
,
143 static struct resource v2m_eth_resources
[] = {
145 .start
= V2M_LAN9118
,
146 .end
= V2M_LAN9118
+ SZ_64K
- 1,
147 .flags
= IORESOURCE_MEM
,
149 .start
= IRQ_V2M_LAN9118
,
150 .end
= IRQ_V2M_LAN9118
,
151 .flags
= IORESOURCE_IRQ
,
155 static struct smsc911x_platform_config v2m_eth_config
= {
156 .flags
= SMSC911X_USE_32BIT
,
157 .irq_polarity
= SMSC911X_IRQ_POLARITY_ACTIVE_HIGH
,
158 .irq_type
= SMSC911X_IRQ_TYPE_PUSH_PULL
,
159 .phy_interface
= PHY_INTERFACE_MODE_MII
,
162 static struct platform_device v2m_eth_device
= {
165 .resource
= v2m_eth_resources
,
166 .num_resources
= ARRAY_SIZE(v2m_eth_resources
),
167 .dev
.platform_data
= &v2m_eth_config
,
170 static struct resource v2m_usb_resources
[] = {
172 .start
= V2M_ISP1761
,
173 .end
= V2M_ISP1761
+ SZ_128K
- 1,
174 .flags
= IORESOURCE_MEM
,
176 .start
= IRQ_V2M_ISP1761
,
177 .end
= IRQ_V2M_ISP1761
,
178 .flags
= IORESOURCE_IRQ
,
182 static struct isp1760_platform_data v2m_usb_config
= {
184 .bus_width_16
= false,
187 .dack_polarity_high
= false,
188 .dreq_polarity_high
= false,
191 static struct platform_device v2m_usb_device
= {
194 .resource
= v2m_usb_resources
,
195 .num_resources
= ARRAY_SIZE(v2m_usb_resources
),
196 .dev
.platform_data
= &v2m_usb_config
,
199 static int v2m_flash_init(void)
201 writel(0, MMIO_P2V(V2M_SYS_FLASH
));
205 static void v2m_flash_exit(void)
207 writel(0, MMIO_P2V(V2M_SYS_FLASH
));
210 static void v2m_flash_set_vpp(int on
)
212 writel(on
!= 0, MMIO_P2V(V2M_SYS_FLASH
));
215 static struct flash_platform_data v2m_flash_data
= {
216 .map_name
= "cfi_probe",
218 .init
= v2m_flash_init
,
219 .exit
= v2m_flash_exit
,
220 .set_vpp
= v2m_flash_set_vpp
,
223 static struct resource v2m_flash_resources
[] = {
226 .end
= V2M_NOR0
+ SZ_64M
- 1,
227 .flags
= IORESOURCE_MEM
,
230 .end
= V2M_NOR1
+ SZ_64M
- 1,
231 .flags
= IORESOURCE_MEM
,
235 static struct platform_device v2m_flash_device
= {
238 .resource
= v2m_flash_resources
,
239 .num_resources
= ARRAY_SIZE(v2m_flash_resources
),
240 .dev
.platform_data
= &v2m_flash_data
,
244 static unsigned int v2m_mmci_status(struct device
*dev
)
246 return readl(MMIO_P2V(V2M_SYS_MCI
)) & (1 << 0);
249 static struct mmci_platform_data v2m_mmci_data
= {
250 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
251 .status
= v2m_mmci_status
,
254 static AMBA_DEVICE(aaci
, "mb:aaci", V2M_AACI
, NULL
);
255 static AMBA_DEVICE(mmci
, "mb:mmci", V2M_MMCI
, &v2m_mmci_data
);
256 static AMBA_DEVICE(kmi0
, "mb:kmi0", V2M_KMI0
, NULL
);
257 static AMBA_DEVICE(kmi1
, "mb:kmi1", V2M_KMI1
, NULL
);
258 static AMBA_DEVICE(uart0
, "mb:uart0", V2M_UART0
, NULL
);
259 static AMBA_DEVICE(uart1
, "mb:uart1", V2M_UART1
, NULL
);
260 static AMBA_DEVICE(uart2
, "mb:uart2", V2M_UART2
, NULL
);
261 static AMBA_DEVICE(uart3
, "mb:uart3", V2M_UART3
, NULL
);
262 static AMBA_DEVICE(wdt
, "mb:wdt", V2M_WDT
, NULL
);
263 static AMBA_DEVICE(rtc
, "mb:rtc", V2M_RTC
, NULL
);
265 static struct amba_device
*v2m_amba_devs
[] __initdata
= {
279 static long v2m_osc_round(struct clk
*clk
, unsigned long rate
)
284 static int v2m_osc1_set(struct clk
*clk
, unsigned long rate
)
286 return v2m_cfg_write(SYS_CFG_OSC
| SYS_CFG_SITE_MB
| 1, rate
);
289 static const struct clk_ops osc1_clk_ops
= {
290 .round
= v2m_osc_round
,
294 static struct clk osc1_clk
= {
295 .ops
= &osc1_clk_ops
,
299 static struct clk osc2_clk
= {
303 static struct clk dummy_apb_pclk
;
305 static struct clk_lookup v2m_lookups
[] = {
306 { /* AMBA bus clock */
307 .con_id
= "apb_pclk",
308 .clk
= &dummy_apb_pclk
,
310 .dev_id
= "mb:uart0",
313 .dev_id
= "mb:uart1",
316 .dev_id
= "mb:uart2",
319 .dev_id
= "mb:uart3",
336 static void v2m_power_off(void)
338 if (v2m_cfg_write(SYS_CFG_SHUTDOWN
| SYS_CFG_SITE_MB
, 0))
339 printk(KERN_EMERG
"Unable to shutdown\n");
342 static void v2m_restart(char str
, const char *cmd
)
344 if (v2m_cfg_write(SYS_CFG_REBOOT
| SYS_CFG_SITE_MB
, 0))
345 printk(KERN_EMERG
"Unable to reboot\n");
348 static int __init
v2m_init(void)
352 clkdev_add_table(v2m_lookups
, ARRAY_SIZE(v2m_lookups
));
354 platform_device_register(&v2m_pcie_i2c_device
);
355 platform_device_register(&v2m_ddc_i2c_device
);
356 platform_device_register(&v2m_flash_device
);
357 platform_device_register(&v2m_eth_device
);
358 platform_device_register(&v2m_usb_device
);
360 for (i
= 0; i
< ARRAY_SIZE(v2m_amba_devs
); i
++)
361 amba_device_register(v2m_amba_devs
[i
], &iomem_resource
);
363 pm_power_off
= v2m_power_off
;
364 arm_pm_restart
= v2m_restart
;
368 arch_initcall(v2m_init
);