2 * Copyright (C) 2008-2009 ST-Ericsson SA
4 * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2, as
8 * published by the Free Software Foundation.
11 #include <linux/types.h>
12 #include <linux/init.h>
13 #include <linux/device.h>
14 #include <linux/amba/bus.h>
15 #include <linux/interrupt.h>
16 #include <linux/irq.h>
17 #include <linux/platform_device.h>
19 #include <linux/mfd/abx500/ab8500.h>
20 #include <linux/mfd/dbx500-prcmu.h>
22 #include <linux/of_platform.h>
23 #include <linux/regulator/machine.h>
24 #include <linux/platform_data/pinctrl-nomadik.h>
25 #include <linux/random.h>
28 #include <asm/mach/map.h>
29 #include <asm/mach/arch.h>
35 #include "devices-db8500.h"
36 #include "ste-dma40-db8500.h"
37 #include "db8500-regs.h"
38 #include "board-mop500.h"
41 /* minimum static i/o mapping required to boot U8500 platforms */
42 static struct map_desc u8500_uart_io_desc
[] __initdata
= {
43 __IO_DEV_DESC(U8500_UART0_BASE
, SZ_4K
),
44 __IO_DEV_DESC(U8500_UART2_BASE
, SZ_4K
),
46 /* U8500 and U9540 common io_desc */
47 static struct map_desc u8500_common_io_desc
[] __initdata
= {
48 /* SCU base also covers GIC CPU BASE and TWD with its 4K page */
49 __IO_DEV_DESC(U8500_SCU_BASE
, SZ_4K
),
50 __IO_DEV_DESC(U8500_GIC_DIST_BASE
, SZ_4K
),
51 __IO_DEV_DESC(U8500_L2CC_BASE
, SZ_4K
),
52 __IO_DEV_DESC(U8500_MTU0_BASE
, SZ_4K
),
53 __IO_DEV_DESC(U8500_BACKUPRAM0_BASE
, SZ_8K
),
55 __IO_DEV_DESC(U8500_CLKRST1_BASE
, SZ_4K
),
56 __IO_DEV_DESC(U8500_CLKRST2_BASE
, SZ_4K
),
57 __IO_DEV_DESC(U8500_CLKRST3_BASE
, SZ_4K
),
58 __IO_DEV_DESC(U8500_CLKRST5_BASE
, SZ_4K
),
59 __IO_DEV_DESC(U8500_CLKRST6_BASE
, SZ_4K
),
61 __IO_DEV_DESC(U8500_GPIO0_BASE
, SZ_4K
),
62 __IO_DEV_DESC(U8500_GPIO1_BASE
, SZ_4K
),
63 __IO_DEV_DESC(U8500_GPIO2_BASE
, SZ_4K
),
64 __IO_DEV_DESC(U8500_GPIO3_BASE
, SZ_4K
),
67 /* U8500 IO map specific description */
68 static struct map_desc u8500_io_desc
[] __initdata
= {
69 __IO_DEV_DESC(U8500_PRCMU_BASE
, SZ_4K
),
70 __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE
, SZ_4K
),
74 /* U9540 IO map specific description */
75 static struct map_desc u9540_io_desc
[] __initdata
= {
76 __IO_DEV_DESC(U8500_PRCMU_BASE
, SZ_4K
+ SZ_8K
),
77 __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE
, SZ_4K
+ SZ_8K
),
80 void __init
u8500_map_io(void)
83 * Map the UARTs early so that the DEBUG_LL stuff continues to work.
85 iotable_init(u8500_uart_io_desc
, ARRAY_SIZE(u8500_uart_io_desc
));
89 iotable_init(u8500_common_io_desc
, ARRAY_SIZE(u8500_common_io_desc
));
91 if (cpu_is_ux540_family())
92 iotable_init(u9540_io_desc
, ARRAY_SIZE(u9540_io_desc
));
94 iotable_init(u8500_io_desc
, ARRAY_SIZE(u8500_io_desc
));
97 static struct resource db8500_pmu_resources
[] = {
99 .start
= IRQ_DB8500_PMU
,
100 .end
= IRQ_DB8500_PMU
,
101 .flags
= IORESOURCE_IRQ
,
106 * The PMU IRQ lines of two cores are wired together into a single interrupt.
107 * Bounce the interrupt to the other core if it's not ours.
109 static irqreturn_t
db8500_pmu_handler(int irq
, void *dev
, irq_handler_t handler
)
111 irqreturn_t ret
= handler(irq
, dev
);
112 int other
= !smp_processor_id();
114 if (ret
== IRQ_NONE
&& cpu_online(other
))
115 irq_set_affinity(irq
, cpumask_of(other
));
118 * We should be able to get away with the amount of IRQ_NONEs we give,
119 * while still having the spurious IRQ detection code kick in if the
120 * interrupt really starts hitting spuriously.
125 struct arm_pmu_platdata db8500_pmu_platdata
= {
126 .handle_irq
= db8500_pmu_handler
,
129 static struct platform_device db8500_pmu_device
= {
132 .num_resources
= ARRAY_SIZE(db8500_pmu_resources
),
133 .resource
= db8500_pmu_resources
,
134 .dev
.platform_data
= &db8500_pmu_platdata
,
137 static struct platform_device
*platform_devs
[] __initdata
= {
142 static resource_size_t __initdata db8500_gpio_base
[] = {
143 U8500_GPIOBANK0_BASE
,
144 U8500_GPIOBANK1_BASE
,
145 U8500_GPIOBANK2_BASE
,
146 U8500_GPIOBANK3_BASE
,
147 U8500_GPIOBANK4_BASE
,
148 U8500_GPIOBANK5_BASE
,
149 U8500_GPIOBANK6_BASE
,
150 U8500_GPIOBANK7_BASE
,
151 U8500_GPIOBANK8_BASE
,
154 static void __init
db8500_add_gpios(struct device
*parent
)
156 struct nmk_gpio_platform_data pdata
= {
157 .supports_sleepmode
= true,
160 dbx500_add_gpios(parent
, ARRAY_AND_SIZE(db8500_gpio_base
),
161 IRQ_DB8500_GPIO0
, &pdata
);
162 dbx500_add_pinctrl(parent
, "pinctrl-db8500", U8500_PRCMU_BASE
);
165 static int usb_db8500_rx_dma_cfg
[] = {
166 DB8500_DMA_DEV38_USB_OTG_IEP_1_9
,
167 DB8500_DMA_DEV37_USB_OTG_IEP_2_10
,
168 DB8500_DMA_DEV36_USB_OTG_IEP_3_11
,
169 DB8500_DMA_DEV19_USB_OTG_IEP_4_12
,
170 DB8500_DMA_DEV18_USB_OTG_IEP_5_13
,
171 DB8500_DMA_DEV17_USB_OTG_IEP_6_14
,
172 DB8500_DMA_DEV16_USB_OTG_IEP_7_15
,
173 DB8500_DMA_DEV39_USB_OTG_IEP_8
176 static int usb_db8500_tx_dma_cfg
[] = {
177 DB8500_DMA_DEV38_USB_OTG_OEP_1_9
,
178 DB8500_DMA_DEV37_USB_OTG_OEP_2_10
,
179 DB8500_DMA_DEV36_USB_OTG_OEP_3_11
,
180 DB8500_DMA_DEV19_USB_OTG_OEP_4_12
,
181 DB8500_DMA_DEV18_USB_OTG_OEP_5_13
,
182 DB8500_DMA_DEV17_USB_OTG_OEP_6_14
,
183 DB8500_DMA_DEV16_USB_OTG_OEP_7_15
,
184 DB8500_DMA_DEV39_USB_OTG_OEP_8
187 static const char *db8500_read_soc_id(void)
189 void __iomem
*uid
= __io_address(U8500_BB_UID_BASE
);
191 /* Throw these device-specific numbers into the entropy pool */
192 add_device_randomness(uid
, 0x14);
193 return kasprintf(GFP_KERNEL
, "%08x%08x%08x%08x%08x",
195 readl((u32
*)uid
+1), readl((u32
*)uid
+2),
196 readl((u32
*)uid
+3), readl((u32
*)uid
+4));
199 static struct device
* __init
db8500_soc_device_init(void)
201 const char *soc_id
= db8500_read_soc_id();
203 return ux500_soc_device_init(soc_id
);
207 * This function is called from the board init
209 struct device
* __init
u8500_init_devices(struct ab8500_platform_data
*ab8500
)
211 struct device
*parent
;
214 parent
= db8500_soc_device_init();
216 db8500_add_rtc(parent
);
217 db8500_add_gpios(parent
);
218 db8500_add_usb(parent
, usb_db8500_rx_dma_cfg
, usb_db8500_tx_dma_cfg
);
220 for (i
= 0; i
< ARRAY_SIZE(platform_devs
); i
++)
221 platform_devs
[i
]->dev
.parent
= parent
;
223 db8500_prcmu_device
.dev
.platform_data
= ab8500
;
225 platform_add_devices(platform_devs
, ARRAY_SIZE(platform_devs
));
230 #ifdef CONFIG_MACH_UX500_DT
232 /* TODO: Once all pieces are DT:ed, remove completely. */
233 static struct device
* __init
u8500_of_init_devices(void)
235 struct device
*parent
= db8500_soc_device_init();
237 db8500_add_usb(parent
, usb_db8500_rx_dma_cfg
, usb_db8500_tx_dma_cfg
);
239 u8500_dma40_device
.dev
.parent
= parent
;
242 * Devices to be DT:ed:
243 * u8500_dma40_device = todo
244 * db8500_pmu_device = done
245 * db8500_prcmu_device = done
247 platform_device_register(&u8500_dma40_device
);
252 static struct of_dev_auxdata u8500_auxdata_lookup
[] __initdata
= {
253 /* Requires call-back bindings. */
254 OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata
),
255 /* Requires DMA bindings. */
256 OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat
),
257 OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat
),
258 OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat
),
259 OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0", &ssp0_plat
),
260 OF_DEV_AUXDATA("arm,pl18x", 0x80126000, "sdi0", &mop500_sdi0_data
),
261 OF_DEV_AUXDATA("arm,pl18x", 0x80118000, "sdi1", &mop500_sdi1_data
),
262 OF_DEV_AUXDATA("arm,pl18x", 0x80005000, "sdi2", &mop500_sdi2_data
),
263 OF_DEV_AUXDATA("arm,pl18x", 0x80114000, "sdi4", &mop500_sdi4_data
),
264 /* Requires clock name bindings. */
265 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e000, "gpio.0", NULL
),
266 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e080, "gpio.1", NULL
),
267 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e000, "gpio.2", NULL
),
268 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e080, "gpio.3", NULL
),
269 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e100, "gpio.4", NULL
),
270 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e180, "gpio.5", NULL
),
271 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e000, "gpio.6", NULL
),
272 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e080, "gpio.7", NULL
),
273 OF_DEV_AUXDATA("st,nomadik-gpio", 0xa03fe000, "gpio.8", NULL
),
274 OF_DEV_AUXDATA("st,nomadik-i2c", 0x80004000, "nmk-i2c.0", NULL
),
275 OF_DEV_AUXDATA("st,nomadik-i2c", 0x80122000, "nmk-i2c.1", NULL
),
276 OF_DEV_AUXDATA("st,nomadik-i2c", 0x80128000, "nmk-i2c.2", NULL
),
277 OF_DEV_AUXDATA("st,nomadik-i2c", 0x80110000, "nmk-i2c.3", NULL
),
278 OF_DEV_AUXDATA("st,nomadik-i2c", 0x8012a000, "nmk-i2c.4", NULL
),
279 OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu",
280 &db8500_prcmu_pdata
),
281 /* Requires device name bindings. */
282 OF_DEV_AUXDATA("stericsson,nmk-pinctrl", U8500_PRCMU_BASE
,
283 "pinctrl-db8500", NULL
),
284 /* Requires clock name and DMA bindings. */
285 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80123000,
286 "ux500-msp-i2s.0", &msp0_platform_data
),
287 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80124000,
288 "ux500-msp-i2s.1", &msp1_platform_data
),
289 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80117000,
290 "ux500-msp-i2s.2", &msp2_platform_data
),
291 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000,
292 "ux500-msp-i2s.3", &msp3_platform_data
),
296 static const struct of_device_id u8500_local_bus_nodes
[] = {
297 /* only create devices below soc node */
298 { .compatible
= "stericsson,db8500", },
299 { .compatible
= "stericsson,db8500-prcmu", },
300 { .compatible
= "simple-bus"},
304 static void __init
u8500_init_machine(void)
306 struct device
*parent
= NULL
;
308 /* Pinmaps must be in place before devices register */
309 if (of_machine_is_compatible("st-ericsson,mop500"))
310 mop500_pinmaps_init();
311 else if (of_machine_is_compatible("calaosystems,snowball-a9500"))
312 snowball_pinmaps_init();
313 else if (of_machine_is_compatible("st-ericsson,hrefv60+"))
314 hrefv60_pinmaps_init();
315 else if (of_machine_is_compatible("st-ericsson,ccu9540")) {}
316 /* TODO: Add pinmaps for ccu9540 board. */
318 /* TODO: Export SoC, USB, cpu-freq and DMA40 */
319 parent
= u8500_of_init_devices();
321 /* automatically probe child nodes of db8500 device */
322 of_platform_populate(NULL
, u8500_local_bus_nodes
, u8500_auxdata_lookup
, parent
);
325 static const char * stericsson_dt_platform_compat
[] = {
333 DT_MACHINE_START(U8500_DT
, "ST-Ericsson Ux5x0 platform (Device Tree Support)")
334 .smp
= smp_ops(ux500_smp_ops
),
335 .map_io
= u8500_map_io
,
336 .init_irq
= ux500_init_irq
,
337 /* we re-use nomadik timer here */
338 .init_time
= ux500_timer_init
,
339 .init_machine
= u8500_init_machine
,
341 .dt_compat
= stericsson_dt_platform_compat
,