2 * Copyright STMicroelectronics, 2007.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 #include <linux/types.h>
20 #include <linux/init.h>
21 #include <linux/device.h>
22 #include <linux/amba/bus.h>
23 #include <linux/platform_device.h>
25 #include <linux/slab.h>
26 #include <linux/irq.h>
27 #include <linux/dma-mapping.h>
28 #include <linux/irqchip.h>
29 #include <linux/platform_data/clk-nomadik.h>
30 #include <linux/platform_data/pinctrl-nomadik.h>
31 #include <linux/pinctrl/machine.h>
32 #include <linux/platform_data/clocksource-nomadik-mtu.h>
33 #include <linux/of_irq.h>
34 #include <linux/of_gpio.h>
35 #include <linux/of_address.h>
36 #include <linux/of_platform.h>
37 #include <linux/mtd/fsmc.h>
38 #include <linux/gpio.h>
39 #include <linux/amba/mmci.h>
41 #include <mach/irqs.h>
42 #include <asm/mach/arch.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/time.h>
45 #include <asm/mach-types.h>
47 #include <asm/cacheflush.h>
48 #include <asm/hardware/cache-l2x0.h>
51 * These are the only hard-coded address offsets we still have to use.
53 #define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */
54 #define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */
55 #define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */
56 #define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */
57 #define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */
58 #define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */
59 #define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */
60 #define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */
61 #define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */
62 #define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */
63 #define NOMADIK_XTI_BASE 0x101A0000 /* XTI */
64 #define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */
65 #define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */
66 #define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */
67 #define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */
68 #define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */
69 #define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */
70 #define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */
71 #define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */
72 #define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */
73 #define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */
74 #define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */
75 #define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */
76 #define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */
77 #define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */
78 #define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */
79 #define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */
80 #define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */
81 #define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */
82 #define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */
83 #define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */
84 #define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */
85 #define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */
86 #define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */
87 #define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */
88 #define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */
89 #define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */
90 #define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */
91 #define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */
92 #define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */
93 #define NOMADIK_UART1_VBASE 0xF01FB000
95 static unsigned long out_low[] = { PIN_OUTPUT_LOW };
96 static unsigned long out_high[] = { PIN_OUTPUT_HIGH };
97 static unsigned long in_nopull[] = { PIN_INPUT_NOPULL };
98 static unsigned long in_pullup[] = { PIN_INPUT_PULLUP };
100 static struct pinctrl_map __initdata nhk8815_pinmap[] = {
101 PIN_MAP_MUX_GROUP_DEFAULT("uart0", "pinctrl-stn8815", "u0_a_1", "u0"),
102 PIN_MAP_MUX_GROUP_DEFAULT("uart1", "pinctrl-stn8815", "u1_a_1", "u1"),
103 /* Hog in MMC/SD card mux */
104 PIN_MAP_MUX_GROUP_HOG_DEFAULT("pinctrl-stn8815", "mmcsd_a_1", "mmcsd"),
106 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO8_B10", out_low),
108 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO9_A10", in_pullup),
110 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO10_C11", out_high),
112 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO11_B11", in_pullup),
113 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO12_A11", in_pullup),
114 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO13_C12", in_pullup),
115 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO14_B12", in_pullup),
117 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO15_A12", out_high),
119 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO16_C13", out_high),
121 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO24_C15", in_pullup),
123 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO111_H21", in_nopull),
125 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO112_J21", out_low),
127 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO62_D3", in_pullup),
128 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO63_D2", in_pullup),
130 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO53_L4", in_pullup),
131 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO54_L3", in_pullup),
133 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO73_C21", in_pullup),
134 PIN_MAP_CONFIGS_PIN_HOG_DEFAULT("pinctrl-stn8815", "GPIO74_C20", in_pullup),
137 /* This is needed for LL-debug/earlyprintk/debug-macro.S */
138 static struct map_desc cpu8815_io_desc[] __initdata = {
140 .virtual = NOMADIK_UART1_VBASE,
141 .pfn = __phys_to_pfn(NOMADIK_UART1_BASE),
147 static void __init cpu8815_map_io(void)
149 iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
152 static void cpu8815_restart(char mode, const char *cmd)
154 void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);
156 /* FIXME: use egpio when implemented */
158 /* Write anything to Reset status register */
159 writel(1, srcbase + 0x18);
162 /* Initial value for SRC control register: all timers use MXTAL/8 source */
163 #define SRC_CR_INIT_MASK 0x00007fff
164 #define SRC_CR_INIT_VAL 0x2aaa8000
166 static void __init cpu8815_timer_init_of(void)
168 struct device_node *mtu;
173 /* We need this to be up now */
176 mtu = of_find_node_by_path("/mtu0");
179 base = of_iomap(mtu, 0);
182 irq = irq_of_parse_and_map(mtu, 0);
184 pr_info("Remapped MTU @ %p, irq: %d\n", base, irq);
186 /* Configure timer sources in "system reset controller" ctrl reg */
187 src_cr = readl(base);
188 src_cr &= SRC_CR_INIT_MASK;
189 src_cr |= SRC_CR_INIT_VAL;
190 writel(src_cr, base);
192 nmdk_timer_init(base, irq);
195 static struct fsmc_nand_timings cpu8815_nand_timings = {
202 static struct fsmc_nand_platform_data cpu8815_nand_data = {
203 .nand_timings = &cpu8815_nand_timings,
207 * The SMSC911x IRQ is connected to a GPIO pin, but the driver expects
208 * to simply request an IRQ passed as a resource. So the GPIO pin needs
209 * to be requested by this hog and set as input.
211 static int __init cpu8815_eth_init(void)
213 struct device_node *eth;
216 eth = of_find_node_by_path("/usb-s8815/ethernet-gpio");
218 pr_info("could not find any ethernet GPIO\n");
221 gpio = of_get_gpio(eth, 0);
222 err = gpio_request(gpio, "eth_irq");
224 pr_info("failed to request ethernet GPIO\n");
227 err = gpio_direction_input(gpio);
229 pr_info("failed to set ethernet GPIO as input\n");
232 irq = gpio_to_irq(gpio);
233 pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq);
236 device_initcall(cpu8815_eth_init);
240 * cannot be set from device tree, convert to a proper DT
243 static struct mmci_platform_data mmcsd_plat_data = {
244 .ocr_mask = MMC_VDD_29_30,
248 * This GPIO pin turns on a line that is used to detect card insertion
251 static int __init cpu8815_mmcsd_init(void)
253 struct device_node *cdbias;
256 cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio");
258 pr_info("could not find MMC/SD card detect bias node\n");
261 gpio = of_get_gpio(cdbias, 0);
263 pr_info("could not obtain MMC/SD card detect bias GPIO\n");
266 err = gpio_request(gpio, "card detect bias");
268 pr_info("failed to request card detect bias GPIO %d\n", gpio);
271 err = gpio_direction_output(gpio, 0);
273 pr_info("failed to set GPIO %d as output, low\n", gpio);
276 pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio);
279 device_initcall(cpu8815_mmcsd_init);
282 /* These are mostly to get the right device names for the clock lookups */
283 static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = {
284 OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO0_BASE,
286 OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO1_BASE,
288 OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO2_BASE,
290 OF_DEV_AUXDATA("st,nomadik-gpio", NOMADIK_GPIO3_BASE,
292 OF_DEV_AUXDATA("stericsson,nmk-pinctrl-stn8815", 0,
293 "pinctrl-stn8815", NULL),
294 OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART0_BASE,
296 OF_DEV_AUXDATA("arm,primecell", NOMADIK_UART1_BASE,
298 OF_DEV_AUXDATA("arm,primecell", NOMADIK_RNG_BASE,
300 OF_DEV_AUXDATA("arm,primecell", NOMADIK_RTC_BASE,
302 OF_DEV_AUXDATA("stericsson,fsmc-nand", NOMADIK_FSMC_BASE,
303 "fsmc-nand", &cpu8815_nand_data),
304 OF_DEV_AUXDATA("arm,primecell", NOMADIK_SDI_BASE,
305 "mmci", &mmcsd_plat_data),
309 static void __init cpu8815_init_of(void)
311 #ifdef CONFIG_CACHE_L2X0
312 /* At full speed latency must be >=2, so 0x249 in low bits */
313 l2x0_of_init(0x00730249, 0xfe000fff);
315 pinctrl_register_mappings(nhk8815_pinmap, ARRAY_SIZE(nhk8815_pinmap));
316 of_platform_populate(NULL, of_default_bus_match_table,
317 cpu8815_auxdata_lookup, NULL);
320 static const char * cpu8815_board_compat[] = {
321 "calaosystems,usb-s8815",
325 DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
326 .map_io = cpu8815_map_io,
327 .init_irq = irqchip_init,
328 .init_time = cpu8815_timer_init_of,
329 .init_machine = cpu8815_init_of,
330 .restart = cpu8815_restart,
331 .dt_compat = cpu8815_board_compat,