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/of_address.h>
10 #include <linux/of_fdt.h>
11 #include <linux/of_irq.h>
12 #include <linux/of_platform.h>
13 #include <linux/platform_device.h>
14 #include <linux/ata_platform.h>
15 #include <linux/smsc911x.h>
16 #include <linux/spinlock.h>
17 #include <linux/usb/isp1760.h>
18 #include <linux/clkdev.h>
19 #include <linux/clk-provider.h>
20 #include <linux/mtd/physmap.h>
21 #include <linux/regulator/fixed.h>
22 #include <linux/regulator/machine.h>
24 #include <asm/arch_timer.h>
25 #include <asm/mach-types.h>
26 #include <asm/sizes.h>
27 #include <asm/smp_twd.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/time.h>
31 #include <asm/hardware/arm_timer.h>
32 #include <asm/hardware/cache-l2x0.h>
33 #include <asm/hardware/gic.h>
34 #include <asm/hardware/timer-sp.h>
35 #include <asm/hardware/sp810.h>
37 #include <mach/ct-ca9x4.h>
38 #include <mach/motherboard.h>
40 #include <plat/sched_clock.h>
44 #define V2M_PA_CS0 0x40000000
45 #define V2M_PA_CS1 0x44000000
46 #define V2M_PA_CS2 0x48000000
47 #define V2M_PA_CS3 0x4c000000
48 #define V2M_PA_CS7 0x10000000
50 static struct map_desc v2m_io_desc
[] __initdata
= {
52 .virtual = V2M_PERIPH
,
53 .pfn
= __phys_to_pfn(V2M_PA_CS7
),
59 static void __iomem
*v2m_sysreg_base
;
61 static void __init
v2m_sysctl_init(void __iomem
*base
)
68 /* Select 1MHz TIMCLK as the reference clock for SP804 timers */
69 scctrl
= readl(base
+ SCCTRL
);
70 scctrl
|= SCCTRL_TIMEREN0SEL_TIMCLK
;
71 scctrl
|= SCCTRL_TIMEREN1SEL_TIMCLK
;
72 writel(scctrl
, base
+ SCCTRL
);
75 static void __init
v2m_sp804_init(void __iomem
*base
, unsigned int irq
)
77 if (WARN_ON(!base
|| irq
== NO_IRQ
))
80 writel(0, base
+ TIMER_1_BASE
+ TIMER_CTRL
);
81 writel(0, base
+ TIMER_2_BASE
+ TIMER_CTRL
);
83 sp804_clocksource_init(base
+ TIMER_2_BASE
, "v2m-timer1");
84 sp804_clockevents_init(base
+ TIMER_1_BASE
, irq
, "v2m-timer0");
88 static DEFINE_SPINLOCK(v2m_cfg_lock
);
90 int v2m_cfg_write(u32 devfn
, u32 data
)
92 /* Configuration interface broken? */
95 printk("%s: writing %08x to %08x\n", __func__
, data
, devfn
);
97 devfn
|= SYS_CFG_START
| SYS_CFG_WRITE
;
99 spin_lock(&v2m_cfg_lock
);
100 val
= readl(v2m_sysreg_base
+ V2M_SYS_CFGSTAT
);
101 writel(val
& ~SYS_CFG_COMPLETE
, v2m_sysreg_base
+ V2M_SYS_CFGSTAT
);
103 writel(data
, v2m_sysreg_base
+ V2M_SYS_CFGDATA
);
104 writel(devfn
, v2m_sysreg_base
+ V2M_SYS_CFGCTRL
);
107 val
= readl(v2m_sysreg_base
+ V2M_SYS_CFGSTAT
);
109 spin_unlock(&v2m_cfg_lock
);
111 return !!(val
& SYS_CFG_ERR
);
114 int v2m_cfg_read(u32 devfn
, u32
*data
)
118 devfn
|= SYS_CFG_START
;
120 spin_lock(&v2m_cfg_lock
);
121 writel(0, v2m_sysreg_base
+ V2M_SYS_CFGSTAT
);
122 writel(devfn
, v2m_sysreg_base
+ V2M_SYS_CFGCTRL
);
128 val
= readl(v2m_sysreg_base
+ V2M_SYS_CFGSTAT
);
131 *data
= readl(v2m_sysreg_base
+ V2M_SYS_CFGDATA
);
132 spin_unlock(&v2m_cfg_lock
);
134 return !!(val
& SYS_CFG_ERR
);
137 void __init
v2m_flags_set(u32 data
)
139 writel(~0, v2m_sysreg_base
+ V2M_SYS_FLAGSCLR
);
140 writel(data
, v2m_sysreg_base
+ V2M_SYS_FLAGSSET
);
143 int v2m_get_master_site(void)
145 u32 misc
= readl(v2m_sysreg_base
+ V2M_SYS_MISC
);
147 return misc
& SYS_MISC_MASTERSITE
? SYS_CFG_SITE_DB2
: SYS_CFG_SITE_DB1
;
151 static struct resource v2m_pcie_i2c_resource
= {
152 .start
= V2M_SERIAL_BUS_PCI
,
153 .end
= V2M_SERIAL_BUS_PCI
+ SZ_4K
- 1,
154 .flags
= IORESOURCE_MEM
,
157 static struct platform_device v2m_pcie_i2c_device
= {
158 .name
= "versatile-i2c",
161 .resource
= &v2m_pcie_i2c_resource
,
164 static struct resource v2m_ddc_i2c_resource
= {
165 .start
= V2M_SERIAL_BUS_DVI
,
166 .end
= V2M_SERIAL_BUS_DVI
+ SZ_4K
- 1,
167 .flags
= IORESOURCE_MEM
,
170 static struct platform_device v2m_ddc_i2c_device
= {
171 .name
= "versatile-i2c",
174 .resource
= &v2m_ddc_i2c_resource
,
177 static struct resource v2m_eth_resources
[] = {
179 .start
= V2M_LAN9118
,
180 .end
= V2M_LAN9118
+ SZ_64K
- 1,
181 .flags
= IORESOURCE_MEM
,
183 .start
= IRQ_V2M_LAN9118
,
184 .end
= IRQ_V2M_LAN9118
,
185 .flags
= IORESOURCE_IRQ
,
189 static struct smsc911x_platform_config v2m_eth_config
= {
190 .flags
= SMSC911X_USE_32BIT
,
191 .irq_polarity
= SMSC911X_IRQ_POLARITY_ACTIVE_HIGH
,
192 .irq_type
= SMSC911X_IRQ_TYPE_PUSH_PULL
,
193 .phy_interface
= PHY_INTERFACE_MODE_MII
,
196 static struct platform_device v2m_eth_device
= {
199 .resource
= v2m_eth_resources
,
200 .num_resources
= ARRAY_SIZE(v2m_eth_resources
),
201 .dev
.platform_data
= &v2m_eth_config
,
204 static struct regulator_consumer_supply v2m_eth_supplies
[] = {
205 REGULATOR_SUPPLY("vddvario", "smsc911x"),
206 REGULATOR_SUPPLY("vdd33a", "smsc911x"),
209 static struct resource v2m_usb_resources
[] = {
211 .start
= V2M_ISP1761
,
212 .end
= V2M_ISP1761
+ SZ_128K
- 1,
213 .flags
= IORESOURCE_MEM
,
215 .start
= IRQ_V2M_ISP1761
,
216 .end
= IRQ_V2M_ISP1761
,
217 .flags
= IORESOURCE_IRQ
,
221 static struct isp1760_platform_data v2m_usb_config
= {
223 .bus_width_16
= false,
226 .dack_polarity_high
= false,
227 .dreq_polarity_high
= false,
230 static struct platform_device v2m_usb_device
= {
233 .resource
= v2m_usb_resources
,
234 .num_resources
= ARRAY_SIZE(v2m_usb_resources
),
235 .dev
.platform_data
= &v2m_usb_config
,
238 static void v2m_flash_set_vpp(struct platform_device
*pdev
, int on
)
240 writel(on
!= 0, v2m_sysreg_base
+ V2M_SYS_FLASH
);
243 static struct physmap_flash_data v2m_flash_data
= {
245 .set_vpp
= v2m_flash_set_vpp
,
248 static struct resource v2m_flash_resources
[] = {
251 .end
= V2M_NOR0
+ SZ_64M
- 1,
252 .flags
= IORESOURCE_MEM
,
255 .end
= V2M_NOR1
+ SZ_64M
- 1,
256 .flags
= IORESOURCE_MEM
,
260 static struct platform_device v2m_flash_device
= {
261 .name
= "physmap-flash",
263 .resource
= v2m_flash_resources
,
264 .num_resources
= ARRAY_SIZE(v2m_flash_resources
),
265 .dev
.platform_data
= &v2m_flash_data
,
268 static struct pata_platform_info v2m_pata_data
= {
272 static struct resource v2m_pata_resources
[] = {
275 .end
= V2M_CF
+ 0xff,
276 .flags
= IORESOURCE_MEM
,
278 .start
= V2M_CF
+ 0x100,
279 .end
= V2M_CF
+ SZ_4K
- 1,
280 .flags
= IORESOURCE_MEM
,
284 static struct platform_device v2m_cf_device
= {
285 .name
= "pata_platform",
287 .resource
= v2m_pata_resources
,
288 .num_resources
= ARRAY_SIZE(v2m_pata_resources
),
289 .dev
.platform_data
= &v2m_pata_data
,
292 static unsigned int v2m_mmci_status(struct device
*dev
)
294 return readl(v2m_sysreg_base
+ V2M_SYS_MCI
) & (1 << 0);
297 static struct mmci_platform_data v2m_mmci_data
= {
298 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
299 .status
= v2m_mmci_status
,
302 static AMBA_APB_DEVICE(aaci
, "mb:aaci", 0, V2M_AACI
, IRQ_V2M_AACI
, NULL
);
303 static AMBA_APB_DEVICE(mmci
, "mb:mmci", 0, V2M_MMCI
, IRQ_V2M_MMCI
, &v2m_mmci_data
);
304 static AMBA_APB_DEVICE(kmi0
, "mb:kmi0", 0, V2M_KMI0
, IRQ_V2M_KMI0
, NULL
);
305 static AMBA_APB_DEVICE(kmi1
, "mb:kmi1", 0, V2M_KMI1
, IRQ_V2M_KMI1
, NULL
);
306 static AMBA_APB_DEVICE(uart0
, "mb:uart0", 0, V2M_UART0
, IRQ_V2M_UART0
, NULL
);
307 static AMBA_APB_DEVICE(uart1
, "mb:uart1", 0, V2M_UART1
, IRQ_V2M_UART1
, NULL
);
308 static AMBA_APB_DEVICE(uart2
, "mb:uart2", 0, V2M_UART2
, IRQ_V2M_UART2
, NULL
);
309 static AMBA_APB_DEVICE(uart3
, "mb:uart3", 0, V2M_UART3
, IRQ_V2M_UART3
, NULL
);
310 static AMBA_APB_DEVICE(wdt
, "mb:wdt", 0, V2M_WDT
, IRQ_V2M_WDT
, NULL
);
311 static AMBA_APB_DEVICE(rtc
, "mb:rtc", 0, V2M_RTC
, IRQ_V2M_RTC
, NULL
);
313 static struct amba_device
*v2m_amba_devs
[] __initdata
= {
327 static unsigned long v2m_osc_recalc_rate(struct clk_hw
*hw
,
328 unsigned long parent_rate
)
330 struct v2m_osc
*osc
= to_v2m_osc(hw
);
332 return !parent_rate
? osc
->rate_default
: parent_rate
;
335 static long v2m_osc_round_rate(struct clk_hw
*hw
, unsigned long rate
,
336 unsigned long *parent_rate
)
338 struct v2m_osc
*osc
= to_v2m_osc(hw
);
340 if (WARN_ON(rate
< osc
->rate_min
))
341 rate
= osc
->rate_min
;
343 if (WARN_ON(rate
> osc
->rate_max
))
344 rate
= osc
->rate_max
;
349 static int v2m_osc_set_rate(struct clk_hw
*hw
, unsigned long rate
,
350 unsigned long parent_rate
)
352 struct v2m_osc
*osc
= to_v2m_osc(hw
);
354 v2m_cfg_write(SYS_CFG_OSC
| SYS_CFG_SITE(osc
->site
) |
355 SYS_CFG_STACK(osc
->stack
) | osc
->osc
, rate
);
360 static struct clk_ops v2m_osc_ops
= {
361 .recalc_rate
= v2m_osc_recalc_rate
,
362 .round_rate
= v2m_osc_round_rate
,
363 .set_rate
= v2m_osc_set_rate
,
366 struct clk
* __init
v2m_osc_register(const char *name
, struct v2m_osc
*osc
)
368 struct clk_init_data init
;
370 WARN_ON(osc
->site
> 2);
371 WARN_ON(osc
->stack
> 15);
372 WARN_ON(osc
->osc
> 4095);
375 init
.ops
= &v2m_osc_ops
;
376 init
.flags
= CLK_IS_ROOT
;
377 init
.num_parents
= 0;
379 osc
->hw
.init
= &init
;
381 return clk_register(NULL
, &osc
->hw
);
384 static struct v2m_osc v2m_mb_osc1
= {
385 .site
= SYS_CFG_SITE_MB
,
387 .rate_min
= 23750000,
388 .rate_max
= 63500000,
389 .rate_default
= 23750000,
392 static const char *v2m_ref_clk_periphs
[] __initconst
= {
393 "mb:wdt", "1000f000.wdt", "1c0f0000.wdt", /* SP805 WDT */
396 static const char *v2m_osc1_periphs
[] __initconst
= {
397 "mb:clcd", "1001f000.clcd", "1c1f0000.clcd", /* PL111 CLCD */
400 static const char *v2m_osc2_periphs
[] __initconst
= {
401 "mb:mmci", "10005000.mmci", "1c050000.mmci", /* PL180 MMCI */
402 "mb:kmi0", "10006000.kmi", "1c060000.kmi", /* PL050 KMI0 */
403 "mb:kmi1", "10007000.kmi", "1c070000.kmi", /* PL050 KMI1 */
404 "mb:uart0", "10009000.uart", "1c090000.uart", /* PL011 UART0 */
405 "mb:uart1", "1000a000.uart", "1c0a0000.uart", /* PL011 UART1 */
406 "mb:uart2", "1000b000.uart", "1c0b0000.uart", /* PL011 UART2 */
407 "mb:uart3", "1000c000.uart", "1c0c0000.uart", /* PL011 UART3 */
410 static void __init
v2m_clk_init(void)
415 clk
= clk_register_fixed_rate(NULL
, "dummy_apb_pclk", NULL
,
417 WARN_ON(clk_register_clkdev(clk
, "apb_pclk", NULL
));
419 clk
= clk_register_fixed_rate(NULL
, "mb:ref_clk", NULL
,
421 for (i
= 0; i
< ARRAY_SIZE(v2m_ref_clk_periphs
); i
++)
422 WARN_ON(clk_register_clkdev(clk
, NULL
, v2m_ref_clk_periphs
[i
]));
424 clk
= clk_register_fixed_rate(NULL
, "mb:sp804_clk", NULL
,
425 CLK_IS_ROOT
, 1000000);
426 WARN_ON(clk_register_clkdev(clk
, "v2m-timer0", "sp804"));
427 WARN_ON(clk_register_clkdev(clk
, "v2m-timer1", "sp804"));
429 clk
= v2m_osc_register("mb:osc1", &v2m_mb_osc1
);
430 for (i
= 0; i
< ARRAY_SIZE(v2m_osc1_periphs
); i
++)
431 WARN_ON(clk_register_clkdev(clk
, NULL
, v2m_osc1_periphs
[i
]));
433 clk
= clk_register_fixed_rate(NULL
, "mb:osc2", NULL
,
434 CLK_IS_ROOT
, 24000000);
435 for (i
= 0; i
< ARRAY_SIZE(v2m_osc2_periphs
); i
++)
436 WARN_ON(clk_register_clkdev(clk
, NULL
, v2m_osc2_periphs
[i
]));
439 static void __init
v2m_timer_init(void)
441 v2m_sysctl_init(ioremap(V2M_SYSCTL
, SZ_4K
));
443 v2m_sp804_init(ioremap(V2M_TIMER01
, SZ_4K
), IRQ_V2M_TIMER0
);
446 static struct sys_timer v2m_timer
= {
447 .init
= v2m_timer_init
,
450 static void __init
v2m_init_early(void)
452 if (ct_desc
->init_early
)
453 ct_desc
->init_early();
454 versatile_sched_clock_init(v2m_sysreg_base
+ V2M_SYS_24MHZ
, 24000000);
457 static void v2m_power_off(void)
459 if (v2m_cfg_write(SYS_CFG_SHUTDOWN
| SYS_CFG_SITE(SYS_CFG_SITE_MB
), 0))
460 printk(KERN_EMERG
"Unable to shutdown\n");
463 static void v2m_restart(char str
, const char *cmd
)
465 if (v2m_cfg_write(SYS_CFG_REBOOT
| SYS_CFG_SITE(SYS_CFG_SITE_MB
), 0))
466 printk(KERN_EMERG
"Unable to reboot\n");
469 struct ct_desc
*ct_desc
;
471 static struct ct_desc
*ct_descs
[] __initdata
= {
472 #ifdef CONFIG_ARCH_VEXPRESS_CA9X4
477 static void __init
v2m_populate_ct_desc(void)
483 current_tile_id
= readl(v2m_sysreg_base
+ V2M_SYS_PROCID0
)
486 for (i
= 0; i
< ARRAY_SIZE(ct_descs
) && !ct_desc
; ++i
)
487 if (ct_descs
[i
]->id
== current_tile_id
)
488 ct_desc
= ct_descs
[i
];
491 panic("vexpress: this kernel does not support core tile ID 0x%08x when booting via ATAGs.\n"
492 "You may need a device tree blob or a different kernel to boot on this board.\n",
496 static void __init
v2m_map_io(void)
498 iotable_init(v2m_io_desc
, ARRAY_SIZE(v2m_io_desc
));
499 v2m_sysreg_base
= ioremap(V2M_SYSREGS
, SZ_4K
);
500 v2m_populate_ct_desc();
504 static void __init
v2m_init_irq(void)
509 static void __init
v2m_init(void)
513 regulator_register_fixed(0, v2m_eth_supplies
,
514 ARRAY_SIZE(v2m_eth_supplies
));
516 platform_device_register(&v2m_pcie_i2c_device
);
517 platform_device_register(&v2m_ddc_i2c_device
);
518 platform_device_register(&v2m_flash_device
);
519 platform_device_register(&v2m_cf_device
);
520 platform_device_register(&v2m_eth_device
);
521 platform_device_register(&v2m_usb_device
);
523 for (i
= 0; i
< ARRAY_SIZE(v2m_amba_devs
); i
++)
524 amba_device_register(v2m_amba_devs
[i
], &iomem_resource
);
526 pm_power_off
= v2m_power_off
;
528 ct_desc
->init_tile();
531 MACHINE_START(VEXPRESS
, "ARM-Versatile Express")
532 .atag_offset
= 0x100,
533 .map_io
= v2m_map_io
,
534 .init_early
= v2m_init_early
,
535 .init_irq
= v2m_init_irq
,
537 .handle_irq
= gic_handle_irq
,
538 .init_machine
= v2m_init
,
539 .restart
= v2m_restart
,
542 #if defined(CONFIG_ARCH_VEXPRESS_DT)
544 static struct map_desc v2m_rs1_io_desc __initdata
= {
545 .virtual = V2M_PERIPH
,
546 .pfn
= __phys_to_pfn(0x1c000000),
551 static int __init
v2m_dt_scan_memory_map(unsigned long node
, const char *uname
,
552 int depth
, void *data
)
554 const char **map
= data
;
556 if (strcmp(uname
, "motherboard") != 0)
559 *map
= of_get_flat_dt_prop(node
, "arm,v2m-memory-map", NULL
);
564 void __init
v2m_dt_map_io(void)
566 const char *map
= NULL
;
568 of_scan_flat_dt(v2m_dt_scan_memory_map
, &map
);
570 if (map
&& strcmp(map
, "rs1") == 0)
571 iotable_init(&v2m_rs1_io_desc
, 1);
573 iotable_init(v2m_io_desc
, ARRAY_SIZE(v2m_io_desc
));
575 #if defined(CONFIG_SMP)
576 vexpress_dt_smp_map_io();
580 void __init
v2m_dt_init_early(void)
582 struct device_node
*node
;
585 node
= of_find_compatible_node(NULL
, NULL
, "arm,vexpress-sysreg");
586 v2m_sysreg_base
= of_iomap(node
, 0);
587 if (WARN_ON(!v2m_sysreg_base
))
590 /* Confirm board type against DT property, if available */
591 if (of_property_read_u32(allnodes
, "arm,hbi", &dt_hbi
) == 0) {
592 int site
= v2m_get_master_site();
593 u32 id
= readl(v2m_sysreg_base
+ (site
== SYS_CFG_SITE_DB2
?
594 V2M_SYS_PROCID1
: V2M_SYS_PROCID0
));
595 u32 hbi
= id
& SYS_PROCIDx_HBI_MASK
;
597 if (WARN_ON(dt_hbi
!= hbi
))
598 pr_warning("vexpress: DT HBI (%x) is not matching "
599 "hardware (%x)!\n", dt_hbi
, hbi
);
603 static struct of_device_id vexpress_irq_match
[] __initdata
= {
604 { .compatible
= "arm,cortex-a9-gic", .data
= gic_of_init
, },
608 static void __init
v2m_dt_init_irq(void)
610 of_irq_init(vexpress_irq_match
);
613 static void __init
v2m_dt_timer_init(void)
615 struct device_node
*node
;
619 node
= of_find_compatible_node(NULL
, NULL
, "arm,sp810");
620 v2m_sysctl_init(of_iomap(node
, 0));
624 err
= of_property_read_string(of_aliases
, "arm,v2m_timer", &path
);
627 node
= of_find_node_by_path(path
);
628 v2m_sp804_init(of_iomap(node
, 0), irq_of_parse_and_map(node
, 0));
629 if (arch_timer_of_register() != 0)
630 twd_local_timer_of_register();
632 if (arch_timer_sched_clock_init() != 0)
633 versatile_sched_clock_init(v2m_sysreg_base
+ V2M_SYS_24MHZ
, 24000000);
636 static struct sys_timer v2m_dt_timer
= {
637 .init
= v2m_dt_timer_init
,
640 static struct of_dev_auxdata v2m_dt_auxdata_lookup
[] __initdata
= {
641 OF_DEV_AUXDATA("arm,vexpress-flash", V2M_NOR0
, "physmap-flash",
643 OF_DEV_AUXDATA("arm,primecell", V2M_MMCI
, "mb:mmci", &v2m_mmci_data
),
645 OF_DEV_AUXDATA("arm,vexpress-flash", 0x08000000, "physmap-flash",
647 OF_DEV_AUXDATA("arm,primecell", 0x1c050000, "mb:mmci", &v2m_mmci_data
),
651 static void __init
v2m_dt_init(void)
653 l2x0_of_init(0x00400000, 0xfe0fffff);
654 of_platform_populate(NULL
, of_default_bus_match_table
,
655 v2m_dt_auxdata_lookup
, NULL
);
656 pm_power_off
= v2m_power_off
;
659 const static char *v2m_dt_match
[] __initconst
= {
664 DT_MACHINE_START(VEXPRESS_DT
, "ARM-Versatile Express")
665 .dt_compat
= v2m_dt_match
,
666 .map_io
= v2m_dt_map_io
,
667 .init_early
= v2m_dt_init_early
,
668 .init_irq
= v2m_dt_init_irq
,
669 .timer
= &v2m_dt_timer
,
670 .init_machine
= v2m_dt_init
,
671 .handle_irq
= gic_handle_irq
,
672 .restart
= v2m_restart
,