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>
31 #include <mach/hardware.h>
32 #include <mach/setup.h>
33 #include <mach/devices.h>
34 #include <mach/db8500-regs.h>
35 #include <mach/irqs.h>
37 #include "devices-db8500.h"
38 #include "ste-dma40-db8500.h"
39 #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));
96 _PRCMU_BASE = __io_address(U8500_PRCMU_BASE);
99 static struct resource db8500_pmu_resources[] = {
101 .start = IRQ_DB8500_PMU,
102 .end = IRQ_DB8500_PMU,
103 .flags = IORESOURCE_IRQ,
108 * The PMU IRQ lines of two cores are wired together into a single interrupt.
109 * Bounce the interrupt to the other core if it's not ours.
111 static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler)
113 irqreturn_t ret = handler(irq, dev);
114 int other = !smp_processor_id();
116 if (ret == IRQ_NONE && cpu_online(other))
117 irq_set_affinity(irq, cpumask_of(other));
120 * We should be able to get away with the amount of IRQ_NONEs we give,
121 * while still having the spurious IRQ detection code kick in if the
122 * interrupt really starts hitting spuriously.
127 struct arm_pmu_platdata db8500_pmu_platdata = {
128 .handle_irq = db8500_pmu_handler,
131 static struct platform_device db8500_pmu_device = {
134 .num_resources = ARRAY_SIZE(db8500_pmu_resources),
135 .resource = db8500_pmu_resources,
136 .dev.platform_data = &db8500_pmu_platdata,
139 static struct platform_device db8500_prcmu_device = {
140 .name = "db8500-prcmu",
143 static struct platform_device *platform_devs[] __initdata = {
146 &db8500_prcmu_device,
149 static resource_size_t __initdata db8500_gpio_base[] = {
150 U8500_GPIOBANK0_BASE,
151 U8500_GPIOBANK1_BASE,
152 U8500_GPIOBANK2_BASE,
153 U8500_GPIOBANK3_BASE,
154 U8500_GPIOBANK4_BASE,
155 U8500_GPIOBANK5_BASE,
156 U8500_GPIOBANK6_BASE,
157 U8500_GPIOBANK7_BASE,
158 U8500_GPIOBANK8_BASE,
161 static void __init db8500_add_gpios(struct device *parent)
163 struct nmk_gpio_platform_data pdata = {
164 .supports_sleepmode = true,
167 dbx500_add_gpios(parent, ARRAY_AND_SIZE(db8500_gpio_base),
168 IRQ_DB8500_GPIO0, &pdata);
169 dbx500_add_pinctrl(parent, "pinctrl-db8500", U8500_PRCMU_BASE);
172 static int usb_db8500_rx_dma_cfg[] = {
173 DB8500_DMA_DEV38_USB_OTG_IEP_1_9,
174 DB8500_DMA_DEV37_USB_OTG_IEP_2_10,
175 DB8500_DMA_DEV36_USB_OTG_IEP_3_11,
176 DB8500_DMA_DEV19_USB_OTG_IEP_4_12,
177 DB8500_DMA_DEV18_USB_OTG_IEP_5_13,
178 DB8500_DMA_DEV17_USB_OTG_IEP_6_14,
179 DB8500_DMA_DEV16_USB_OTG_IEP_7_15,
180 DB8500_DMA_DEV39_USB_OTG_IEP_8
183 static int usb_db8500_tx_dma_cfg[] = {
184 DB8500_DMA_DEV38_USB_OTG_OEP_1_9,
185 DB8500_DMA_DEV37_USB_OTG_OEP_2_10,
186 DB8500_DMA_DEV36_USB_OTG_OEP_3_11,
187 DB8500_DMA_DEV19_USB_OTG_OEP_4_12,
188 DB8500_DMA_DEV18_USB_OTG_OEP_5_13,
189 DB8500_DMA_DEV17_USB_OTG_OEP_6_14,
190 DB8500_DMA_DEV16_USB_OTG_OEP_7_15,
191 DB8500_DMA_DEV39_USB_OTG_OEP_8
194 static const char *db8500_read_soc_id(void)
196 void __iomem *uid = __io_address(U8500_BB_UID_BASE);
198 /* Throw these device-specific numbers into the entropy pool */
199 add_device_randomness(uid, 0x14);
200 return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",
202 readl((u32 *)uid+1), readl((u32 *)uid+2),
203 readl((u32 *)uid+3), readl((u32 *)uid+4));
206 static struct device * __init db8500_soc_device_init(void)
208 const char *soc_id = db8500_read_soc_id();
210 return ux500_soc_device_init(soc_id);
214 * This function is called from the board init
216 struct device * __init u8500_init_devices(struct ab8500_platform_data *ab8500)
218 struct device *parent;
221 parent = db8500_soc_device_init();
223 db8500_add_rtc(parent);
224 db8500_add_gpios(parent);
225 db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg);
227 for (i = 0; i < ARRAY_SIZE(platform_devs); i++)
228 platform_devs[i]->dev.parent = parent;
230 db8500_prcmu_device.dev.platform_data = ab8500;
232 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
237 #ifdef CONFIG_MACH_UX500_DT
239 /* TODO: Once all pieces are DT:ed, remove completely. */
240 static struct device * __init u8500_of_init_devices(void)
242 struct device *parent = db8500_soc_device_init();
244 db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg);
246 u8500_dma40_device.dev.parent = parent;
249 * Devices to be DT:ed:
250 * u8500_dma40_device = todo
251 * db8500_pmu_device = done
252 * db8500_prcmu_device = done
254 platform_device_register(&u8500_dma40_device);
259 static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
260 /* Requires call-back bindings. */
261 OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata),
262 /* Requires DMA bindings. */
263 OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),
264 OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat),
265 OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat),
266 OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0", &ssp0_plat),
267 OF_DEV_AUXDATA("arm,pl18x", 0x80126000, "sdi0", &mop500_sdi0_data),
268 OF_DEV_AUXDATA("arm,pl18x", 0x80118000, "sdi1", &mop500_sdi1_data),
269 OF_DEV_AUXDATA("arm,pl18x", 0x80005000, "sdi2", &mop500_sdi2_data),
270 OF_DEV_AUXDATA("arm,pl18x", 0x80114000, "sdi4", &mop500_sdi4_data),
271 /* Requires clock name bindings. */
272 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e000, "gpio.0", NULL),
273 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e080, "gpio.1", NULL),
274 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e000, "gpio.2", NULL),
275 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e080, "gpio.3", NULL),
276 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e100, "gpio.4", NULL),
277 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e180, "gpio.5", NULL),
278 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e000, "gpio.6", NULL),
279 OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e080, "gpio.7", NULL),
280 OF_DEV_AUXDATA("st,nomadik-gpio", 0xa03fe000, "gpio.8", NULL),
281 OF_DEV_AUXDATA("st,nomadik-i2c", 0x80004000, "nmk-i2c.0", NULL),
282 OF_DEV_AUXDATA("st,nomadik-i2c", 0x80122000, "nmk-i2c.1", NULL),
283 OF_DEV_AUXDATA("st,nomadik-i2c", 0x80128000, "nmk-i2c.2", NULL),
284 OF_DEV_AUXDATA("st,nomadik-i2c", 0x80110000, "nmk-i2c.3", NULL),
285 OF_DEV_AUXDATA("st,nomadik-i2c", 0x8012a000, "nmk-i2c.4", NULL),
286 /* Requires device name bindings. */
287 OF_DEV_AUXDATA("stericsson,nmk_pinctrl", U8500_PRCMU_BASE,
288 "pinctrl-db8500", NULL),
289 /* Requires clock name and DMA bindings. */
290 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80123000,
291 "ux500-msp-i2s.0", &msp0_platform_data),
292 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80124000,
293 "ux500-msp-i2s.1", &msp1_platform_data),
294 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80117000,
295 "ux500-msp-i2s.2", &msp2_platform_data),
296 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000,
297 "ux500-msp-i2s.3", &msp3_platform_data),
301 static const struct of_device_id u8500_local_bus_nodes[] = {
302 /* only create devices below soc node */
303 { .compatible = "stericsson,db8500", },
304 { .compatible = "stericsson,db8500-prcmu", },
305 { .compatible = "simple-bus"},
309 static void __init u8500_init_machine(void)
311 struct device *parent = NULL;
313 /* Pinmaps must be in place before devices register */
314 if (of_machine_is_compatible("st-ericsson,mop500"))
315 mop500_pinmaps_init();
316 else if (of_machine_is_compatible("calaosystems,snowball-a9500"))
317 snowball_pinmaps_init();
318 else if (of_machine_is_compatible("st-ericsson,hrefv60+"))
319 hrefv60_pinmaps_init();
320 else if (of_machine_is_compatible("st-ericsson,ccu9540")) {}
321 /* TODO: Add pinmaps for ccu9540 board. */
323 /* TODO: Export SoC, USB, cpu-freq and DMA40 */
324 parent = u8500_of_init_devices();
326 /* automatically probe child nodes of db8500 device */
327 of_platform_populate(NULL, u8500_local_bus_nodes, u8500_auxdata_lookup, parent);
330 static const char * stericsson_dt_platform_compat[] = {
338 DT_MACHINE_START(U8500_DT, "ST-Ericsson Ux5x0 platform (Device Tree Support)")
339 .smp = smp_ops(ux500_smp_ops),
340 .map_io = u8500_map_io,
341 .init_irq = ux500_init_irq,
342 /* we re-use nomadik timer here */
343 .timer = &ux500_timer,
344 .init_machine = u8500_init_machine,
346 .dt_compat = stericsson_dt_platform_compat,