Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright STMicroelectronics, 2007. |
| 3 | * |
| 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. |
| 8 | * |
| 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. |
| 13 | * |
| 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 |
| 17 | */ |
| 18 | |
| 19 | #include <linux/types.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/device.h> |
Alessandro Rubini | 2ec1d35 | 2009-07-02 15:29:12 +0100 | [diff] [blame] | 22 | #include <linux/amba/bus.h> |
Rabin Vincent | 3e3c62c | 2010-03-03 04:52:34 +0100 | [diff] [blame] | 23 | #include <linux/platform_device.h> |
Russell King | 35b47a405 | 2011-11-28 10:48:02 +0000 | [diff] [blame] | 24 | #include <linux/io.h> |
Linus Walleij | 7c77852 | 2012-01-09 12:40:02 +0100 | [diff] [blame] | 25 | #include <linux/slab.h> |
| 26 | #include <linux/irq.h> |
| 27 | #include <linux/dma-mapping.h> |
Linus Walleij | 4a31bd2 | 2012-01-11 13:52:34 +0100 | [diff] [blame] | 28 | #include <linux/platform_data/clk-nomadik.h> |
Linus Walleij | 7690fbb | 2013-04-16 23:44:31 +0200 | [diff] [blame] | 29 | #include <linux/clocksource.h> |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 30 | #include <linux/of_irq.h> |
Linus Walleij | 2ad6e39 | 2013-01-06 01:02:42 +0100 | [diff] [blame] | 31 | #include <linux/of_gpio.h> |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 32 | #include <linux/of_address.h> |
| 33 | #include <linux/of_platform.h> |
Linus Walleij | ba78520 | 2013-01-05 22:28:32 +0100 | [diff] [blame] | 34 | #include <linux/mtd/fsmc.h> |
Linus Walleij | 2ad6e39 | 2013-01-06 01:02:42 +0100 | [diff] [blame] | 35 | #include <linux/gpio.h> |
Linus Walleij | 4fd243c | 2013-01-06 01:47:29 +0100 | [diff] [blame] | 36 | #include <linux/amba/mmci.h> |
Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 37 | |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 38 | #include <asm/mach/arch.h> |
Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 39 | #include <asm/mach/map.h> |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 40 | #include <asm/mach/time.h> |
Linus Walleij | 27bda03 | 2013-01-05 10:38:57 +0100 | [diff] [blame] | 41 | #include <asm/mach-types.h> |
Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 42 | |
Alessandro Rubini | 0b260fd | 2009-07-02 15:29:43 +0100 | [diff] [blame] | 43 | #include <asm/cacheflush.h> |
| 44 | #include <asm/hardware/cache-l2x0.h> |
| 45 | |
Linus Walleij | dea3eac | 2013-01-06 02:58:43 +0100 | [diff] [blame] | 46 | /* |
| 47 | * These are the only hard-coded address offsets we still have to use. |
| 48 | */ |
| 49 | #define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */ |
| 50 | #define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */ |
| 51 | #define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */ |
| 52 | #define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */ |
| 53 | #define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */ |
| 54 | #define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */ |
| 55 | #define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */ |
| 56 | #define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */ |
| 57 | #define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */ |
| 58 | #define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */ |
| 59 | #define NOMADIK_XTI_BASE 0x101A0000 /* XTI */ |
| 60 | #define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */ |
| 61 | #define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */ |
| 62 | #define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */ |
| 63 | #define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */ |
| 64 | #define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */ |
| 65 | #define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */ |
| 66 | #define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */ |
| 67 | #define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */ |
| 68 | #define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */ |
| 69 | #define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */ |
| 70 | #define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */ |
| 71 | #define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */ |
| 72 | #define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */ |
| 73 | #define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */ |
| 74 | #define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */ |
| 75 | #define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */ |
| 76 | #define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */ |
| 77 | #define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */ |
| 78 | #define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */ |
| 79 | #define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */ |
| 80 | #define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */ |
| 81 | #define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */ |
| 82 | #define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */ |
| 83 | #define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */ |
| 84 | #define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */ |
| 85 | #define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */ |
| 86 | #define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */ |
| 87 | #define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */ |
| 88 | #define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */ |
| 89 | #define NOMADIK_UART1_VBASE 0xF01FB000 |
| 90 | |
Linus Walleij | dea3eac | 2013-01-06 02:58:43 +0100 | [diff] [blame] | 91 | /* This is needed for LL-debug/earlyprintk/debug-macro.S */ |
| 92 | static struct map_desc cpu8815_io_desc[] __initdata = { |
Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 93 | { |
Linus Walleij | dea3eac | 2013-01-06 02:58:43 +0100 | [diff] [blame] | 94 | .virtual = NOMADIK_UART1_VBASE, |
| 95 | .pfn = __phys_to_pfn(NOMADIK_UART1_BASE), |
| 96 | .length = SZ_4K, |
| 97 | .type = MT_DEVICE, |
| 98 | }, |
Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 99 | }; |
| 100 | |
Linus Walleij | 5f66d48 | 2013-01-06 02:25:20 +0100 | [diff] [blame] | 101 | static void __init cpu8815_map_io(void) |
Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 102 | { |
Linus Walleij | dea3eac | 2013-01-06 02:58:43 +0100 | [diff] [blame] | 103 | iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc)); |
Alessandro Rubini | 28ad94e | 2009-07-02 19:06:47 +0100 | [diff] [blame] | 104 | } |
| 105 | |
Robin Holt | 7b6d864 | 2013-07-08 16:01:40 -0700 | [diff] [blame] | 106 | static void cpu8815_restart(enum reboot_mode mode, const char *cmd) |
Russell King | 35b47a405 | 2011-11-28 10:48:02 +0000 | [diff] [blame] | 107 | { |
Linus Walleij | dea3eac | 2013-01-06 02:58:43 +0100 | [diff] [blame] | 108 | void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K); |
Russell King | 35b47a405 | 2011-11-28 10:48:02 +0000 | [diff] [blame] | 109 | |
| 110 | /* FIXME: use egpio when implemented */ |
| 111 | |
| 112 | /* Write anything to Reset status register */ |
Linus Walleij | dea3eac | 2013-01-06 02:58:43 +0100 | [diff] [blame] | 113 | writel(1, srcbase + 0x18); |
Russell King | 35b47a405 | 2011-11-28 10:48:02 +0000 | [diff] [blame] | 114 | } |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 115 | |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 116 | /* Initial value for SRC control register: all timers use MXTAL/8 source */ |
| 117 | #define SRC_CR_INIT_MASK 0x00007fff |
| 118 | #define SRC_CR_INIT_VAL 0x2aaa8000 |
| 119 | |
| 120 | static void __init cpu8815_timer_init_of(void) |
| 121 | { |
| 122 | struct device_node *mtu; |
| 123 | void __iomem *base; |
| 124 | int irq; |
| 125 | u32 src_cr; |
| 126 | |
| 127 | /* We need this to be up now */ |
| 128 | nomadik_clk_init(); |
| 129 | |
Linus Walleij | 7690fbb | 2013-04-16 23:44:31 +0200 | [diff] [blame] | 130 | mtu = of_find_node_by_path("/mtu@101e2000"); |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 131 | if (!mtu) |
| 132 | return; |
| 133 | base = of_iomap(mtu, 0); |
| 134 | if (WARN_ON(!base)) |
| 135 | return; |
| 136 | irq = irq_of_parse_and_map(mtu, 0); |
| 137 | |
| 138 | pr_info("Remapped MTU @ %p, irq: %d\n", base, irq); |
| 139 | |
| 140 | /* Configure timer sources in "system reset controller" ctrl reg */ |
| 141 | src_cr = readl(base); |
| 142 | src_cr &= SRC_CR_INIT_MASK; |
| 143 | src_cr |= SRC_CR_INIT_VAL; |
| 144 | writel(src_cr, base); |
| 145 | |
Linus Walleij | 7690fbb | 2013-04-16 23:44:31 +0200 | [diff] [blame] | 146 | clocksource_of_init(); |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 147 | } |
| 148 | |
Linus Walleij | ba78520 | 2013-01-05 22:28:32 +0100 | [diff] [blame] | 149 | static struct fsmc_nand_timings cpu8815_nand_timings = { |
| 150 | .thiz = 0, |
| 151 | .thold = 0x10, |
| 152 | .twait = 0x0A, |
| 153 | .tset = 0, |
| 154 | }; |
| 155 | |
| 156 | static struct fsmc_nand_platform_data cpu8815_nand_data = { |
| 157 | .nand_timings = &cpu8815_nand_timings, |
| 158 | }; |
| 159 | |
Linus Walleij | 2ad6e39 | 2013-01-06 01:02:42 +0100 | [diff] [blame] | 160 | /* |
| 161 | * The SMSC911x IRQ is connected to a GPIO pin, but the driver expects |
| 162 | * to simply request an IRQ passed as a resource. So the GPIO pin needs |
| 163 | * to be requested by this hog and set as input. |
| 164 | */ |
| 165 | static int __init cpu8815_eth_init(void) |
| 166 | { |
| 167 | struct device_node *eth; |
| 168 | int gpio, irq, err; |
| 169 | |
| 170 | eth = of_find_node_by_path("/usb-s8815/ethernet-gpio"); |
| 171 | if (!eth) { |
| 172 | pr_info("could not find any ethernet GPIO\n"); |
| 173 | return 0; |
| 174 | } |
| 175 | gpio = of_get_gpio(eth, 0); |
| 176 | err = gpio_request(gpio, "eth_irq"); |
| 177 | if (err) { |
| 178 | pr_info("failed to request ethernet GPIO\n"); |
| 179 | return -ENODEV; |
| 180 | } |
| 181 | err = gpio_direction_input(gpio); |
| 182 | if (err) { |
| 183 | pr_info("failed to set ethernet GPIO as input\n"); |
| 184 | return -ENODEV; |
| 185 | } |
| 186 | irq = gpio_to_irq(gpio); |
| 187 | pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq); |
| 188 | return 0; |
| 189 | } |
| 190 | device_initcall(cpu8815_eth_init); |
| 191 | |
Linus Walleij | 4fd243c | 2013-01-06 01:47:29 +0100 | [diff] [blame] | 192 | /* |
| 193 | * TODO: |
| 194 | * cannot be set from device tree, convert to a proper DT |
| 195 | * binding. |
| 196 | */ |
| 197 | static struct mmci_platform_data mmcsd_plat_data = { |
| 198 | .ocr_mask = MMC_VDD_29_30, |
| 199 | }; |
| 200 | |
| 201 | /* |
| 202 | * This GPIO pin turns on a line that is used to detect card insertion |
| 203 | * on this board. |
| 204 | */ |
| 205 | static int __init cpu8815_mmcsd_init(void) |
| 206 | { |
| 207 | struct device_node *cdbias; |
| 208 | int gpio, err; |
| 209 | |
| 210 | cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio"); |
| 211 | if (!cdbias) { |
| 212 | pr_info("could not find MMC/SD card detect bias node\n"); |
| 213 | return 0; |
| 214 | } |
| 215 | gpio = of_get_gpio(cdbias, 0); |
| 216 | if (gpio < 0) { |
| 217 | pr_info("could not obtain MMC/SD card detect bias GPIO\n"); |
| 218 | return 0; |
| 219 | } |
| 220 | err = gpio_request(gpio, "card detect bias"); |
| 221 | if (err) { |
| 222 | pr_info("failed to request card detect bias GPIO %d\n", gpio); |
| 223 | return -ENODEV; |
| 224 | } |
| 225 | err = gpio_direction_output(gpio, 0); |
| 226 | if (err){ |
| 227 | pr_info("failed to set GPIO %d as output, low\n", gpio); |
| 228 | return err; |
| 229 | } |
| 230 | pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio); |
| 231 | return 0; |
| 232 | } |
| 233 | device_initcall(cpu8815_mmcsd_init); |
| 234 | |
| 235 | |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 236 | /* These are mostly to get the right device names for the clock lookups */ |
| 237 | static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = { |
Linus Walleij | ba78520 | 2013-01-05 22:28:32 +0100 | [diff] [blame] | 238 | OF_DEV_AUXDATA("stericsson,fsmc-nand", NOMADIK_FSMC_BASE, |
Linus Walleij | 6e2b07a | 2013-04-16 21:38:29 +0200 | [diff] [blame] | 239 | NULL, &cpu8815_nand_data), |
Linus Walleij | 4fd243c | 2013-01-06 01:47:29 +0100 | [diff] [blame] | 240 | OF_DEV_AUXDATA("arm,primecell", NOMADIK_SDI_BASE, |
Linus Walleij | 6e2b07a | 2013-04-16 21:38:29 +0200 | [diff] [blame] | 241 | NULL, &mmcsd_plat_data), |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 242 | { /* sentinel */ }, |
| 243 | }; |
| 244 | |
| 245 | static void __init cpu8815_init_of(void) |
| 246 | { |
| 247 | #ifdef CONFIG_CACHE_L2X0 |
| 248 | /* At full speed latency must be >=2, so 0x249 in low bits */ |
| 249 | l2x0_of_init(0x00730249, 0xfe000fff); |
| 250 | #endif |
| 251 | of_platform_populate(NULL, of_default_bus_match_table, |
| 252 | cpu8815_auxdata_lookup, NULL); |
| 253 | } |
| 254 | |
| 255 | static const char * cpu8815_board_compat[] = { |
| 256 | "calaosystems,usb-s8815", |
| 257 | NULL, |
| 258 | }; |
| 259 | |
| 260 | DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815") |
| 261 | .map_io = cpu8815_map_io, |
Linus Walleij | f8635ab | 2013-01-05 00:29:31 +0100 | [diff] [blame] | 262 | .init_time = cpu8815_timer_init_of, |
| 263 | .init_machine = cpu8815_init_of, |
| 264 | .restart = cpu8815_restart, |
| 265 | .dt_compat = cpu8815_board_compat, |
| 266 | MACHINE_END |