128ad94ecSAlessandro Rubini /* 228ad94ecSAlessandro Rubini * Copyright STMicroelectronics, 2007. 328ad94ecSAlessandro Rubini * 428ad94ecSAlessandro Rubini * This program is free software; you can redistribute it and/or modify 528ad94ecSAlessandro Rubini * it under the terms of the GNU General Public License as published by 628ad94ecSAlessandro Rubini * the Free Software Foundation; either version 2 of the License, or 728ad94ecSAlessandro Rubini * (at your option) any later version. 828ad94ecSAlessandro Rubini * 928ad94ecSAlessandro Rubini * This program is distributed in the hope that it will be useful, 1028ad94ecSAlessandro Rubini * but WITHOUT ANY WARRANTY; without even the implied warranty of 1128ad94ecSAlessandro Rubini * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1228ad94ecSAlessandro Rubini * GNU General Public License for more details. 1328ad94ecSAlessandro Rubini * 1428ad94ecSAlessandro Rubini * You should have received a copy of the GNU General Public License 1528ad94ecSAlessandro Rubini * along with this program; if not, write to the Free Software 1628ad94ecSAlessandro Rubini * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 1728ad94ecSAlessandro Rubini */ 1828ad94ecSAlessandro Rubini 1928ad94ecSAlessandro Rubini #include <linux/types.h> 2028ad94ecSAlessandro Rubini #include <linux/init.h> 2128ad94ecSAlessandro Rubini #include <linux/device.h> 222ec1d359SAlessandro Rubini #include <linux/amba/bus.h> 233e3c62caSRabin Vincent #include <linux/platform_device.h> 2435b47a40SRussell King #include <linux/io.h> 257c77852dSLinus Walleij #include <linux/slab.h> 267c77852dSLinus Walleij #include <linux/irq.h> 277c77852dSLinus Walleij #include <linux/dma-mapping.h> 284a31bd28SLinus Walleij #include <linux/platform_data/clk-nomadik.h> 297690fbb2SLinus Walleij #include <linux/clocksource.h> 30f8635abdSLinus Walleij #include <linux/of_irq.h> 312ad6e398SLinus Walleij #include <linux/of_gpio.h> 32f8635abdSLinus Walleij #include <linux/of_address.h> 33f8635abdSLinus Walleij #include <linux/of_platform.h> 34ba785205SLinus Walleij #include <linux/mtd/fsmc.h> 352ad6e398SLinus Walleij #include <linux/gpio.h> 364fd243c6SLinus Walleij #include <linux/amba/mmci.h> 3728ad94ecSAlessandro Rubini 38f8635abdSLinus Walleij #include <asm/mach/arch.h> 3928ad94ecSAlessandro Rubini #include <asm/mach/map.h> 40f8635abdSLinus Walleij #include <asm/mach/time.h> 4127bda036SLinus Walleij #include <asm/mach-types.h> 4228ad94ecSAlessandro Rubini 430b260fd4SAlessandro Rubini #include <asm/cacheflush.h> 440b260fd4SAlessandro Rubini #include <asm/hardware/cache-l2x0.h> 450b260fd4SAlessandro Rubini 46dea3eacdSLinus Walleij /* 47dea3eacdSLinus Walleij * These are the only hard-coded address offsets we still have to use. 48dea3eacdSLinus Walleij */ 49dea3eacdSLinus Walleij #define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */ 50dea3eacdSLinus Walleij #define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */ 51dea3eacdSLinus Walleij #define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */ 52dea3eacdSLinus Walleij #define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */ 53dea3eacdSLinus Walleij #define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */ 54dea3eacdSLinus Walleij #define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */ 55dea3eacdSLinus Walleij #define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */ 56dea3eacdSLinus Walleij #define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */ 57dea3eacdSLinus Walleij #define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */ 58dea3eacdSLinus Walleij #define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */ 59dea3eacdSLinus Walleij #define NOMADIK_XTI_BASE 0x101A0000 /* XTI */ 60dea3eacdSLinus Walleij #define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */ 61dea3eacdSLinus Walleij #define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */ 62dea3eacdSLinus Walleij #define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */ 63dea3eacdSLinus Walleij #define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */ 64dea3eacdSLinus Walleij #define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */ 65dea3eacdSLinus Walleij #define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */ 66dea3eacdSLinus Walleij #define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */ 67dea3eacdSLinus Walleij #define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */ 68dea3eacdSLinus Walleij #define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */ 69dea3eacdSLinus Walleij #define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */ 70dea3eacdSLinus Walleij #define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */ 71dea3eacdSLinus Walleij #define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */ 72dea3eacdSLinus Walleij #define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */ 73dea3eacdSLinus Walleij #define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */ 74dea3eacdSLinus Walleij #define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */ 75dea3eacdSLinus Walleij #define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */ 76dea3eacdSLinus Walleij #define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */ 77dea3eacdSLinus Walleij #define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */ 78dea3eacdSLinus Walleij #define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */ 79dea3eacdSLinus Walleij #define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */ 80dea3eacdSLinus Walleij #define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */ 81dea3eacdSLinus Walleij #define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */ 82dea3eacdSLinus Walleij #define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */ 83dea3eacdSLinus Walleij #define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */ 84dea3eacdSLinus Walleij #define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */ 85dea3eacdSLinus Walleij #define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */ 86dea3eacdSLinus Walleij #define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */ 87dea3eacdSLinus Walleij #define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */ 88dea3eacdSLinus Walleij #define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */ 89dea3eacdSLinus Walleij #define NOMADIK_UART1_VBASE 0xF01FB000 90dea3eacdSLinus Walleij 91dea3eacdSLinus Walleij /* This is needed for LL-debug/earlyprintk/debug-macro.S */ 92dea3eacdSLinus Walleij static struct map_desc cpu8815_io_desc[] __initdata = { 9328ad94ecSAlessandro Rubini { 94dea3eacdSLinus Walleij .virtual = NOMADIK_UART1_VBASE, 95dea3eacdSLinus Walleij .pfn = __phys_to_pfn(NOMADIK_UART1_BASE), 96dea3eacdSLinus Walleij .length = SZ_4K, 9728ad94ecSAlessandro Rubini .type = MT_DEVICE, 98dea3eacdSLinus Walleij }, 9928ad94ecSAlessandro Rubini }; 10028ad94ecSAlessandro Rubini 1015f66d482SLinus Walleij static void __init cpu8815_map_io(void) 10228ad94ecSAlessandro Rubini { 103dea3eacdSLinus Walleij iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc)); 10428ad94ecSAlessandro Rubini } 10528ad94ecSAlessandro Rubini 1067b6d864bSRobin Holt static void cpu8815_restart(enum reboot_mode mode, const char *cmd) 10735b47a40SRussell King { 108dea3eacdSLinus Walleij void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K); 10935b47a40SRussell King 11035b47a40SRussell King /* FIXME: use egpio when implemented */ 11135b47a40SRussell King 11235b47a40SRussell King /* Write anything to Reset status register */ 113dea3eacdSLinus Walleij writel(1, srcbase + 0x18); 11435b47a40SRussell King } 115f8635abdSLinus Walleij 116f8635abdSLinus Walleij /* Initial value for SRC control register: all timers use MXTAL/8 source */ 117f8635abdSLinus Walleij #define SRC_CR_INIT_MASK 0x00007fff 118f8635abdSLinus Walleij #define SRC_CR_INIT_VAL 0x2aaa8000 119f8635abdSLinus Walleij 120f8635abdSLinus Walleij static void __init cpu8815_timer_init_of(void) 121f8635abdSLinus Walleij { 122f8635abdSLinus Walleij struct device_node *mtu; 123f8635abdSLinus Walleij void __iomem *base; 124f8635abdSLinus Walleij int irq; 125f8635abdSLinus Walleij u32 src_cr; 126f8635abdSLinus Walleij 127f8635abdSLinus Walleij /* We need this to be up now */ 128f8635abdSLinus Walleij nomadik_clk_init(); 129f8635abdSLinus Walleij 1307690fbb2SLinus Walleij mtu = of_find_node_by_path("/mtu@101e2000"); 131f8635abdSLinus Walleij if (!mtu) 132f8635abdSLinus Walleij return; 133f8635abdSLinus Walleij base = of_iomap(mtu, 0); 134f8635abdSLinus Walleij if (WARN_ON(!base)) 135f8635abdSLinus Walleij return; 136f8635abdSLinus Walleij irq = irq_of_parse_and_map(mtu, 0); 137f8635abdSLinus Walleij 138f8635abdSLinus Walleij pr_info("Remapped MTU @ %p, irq: %d\n", base, irq); 139f8635abdSLinus Walleij 140f8635abdSLinus Walleij /* Configure timer sources in "system reset controller" ctrl reg */ 141f8635abdSLinus Walleij src_cr = readl(base); 142f8635abdSLinus Walleij src_cr &= SRC_CR_INIT_MASK; 143f8635abdSLinus Walleij src_cr |= SRC_CR_INIT_VAL; 144f8635abdSLinus Walleij writel(src_cr, base); 145f8635abdSLinus Walleij 1467690fbb2SLinus Walleij clocksource_of_init(); 147f8635abdSLinus Walleij } 148f8635abdSLinus Walleij 149ba785205SLinus Walleij static struct fsmc_nand_timings cpu8815_nand_timings = { 150ba785205SLinus Walleij .thiz = 0, 151ba785205SLinus Walleij .thold = 0x10, 152ba785205SLinus Walleij .twait = 0x0A, 153ba785205SLinus Walleij .tset = 0, 154ba785205SLinus Walleij }; 155ba785205SLinus Walleij 156ba785205SLinus Walleij static struct fsmc_nand_platform_data cpu8815_nand_data = { 157ba785205SLinus Walleij .nand_timings = &cpu8815_nand_timings, 158ba785205SLinus Walleij }; 159ba785205SLinus Walleij 1602ad6e398SLinus Walleij /* 1612ad6e398SLinus Walleij * The SMSC911x IRQ is connected to a GPIO pin, but the driver expects 1622ad6e398SLinus Walleij * to simply request an IRQ passed as a resource. So the GPIO pin needs 1632ad6e398SLinus Walleij * to be requested by this hog and set as input. 1642ad6e398SLinus Walleij */ 1652ad6e398SLinus Walleij static int __init cpu8815_eth_init(void) 1662ad6e398SLinus Walleij { 1672ad6e398SLinus Walleij struct device_node *eth; 1682ad6e398SLinus Walleij int gpio, irq, err; 1692ad6e398SLinus Walleij 1702ad6e398SLinus Walleij eth = of_find_node_by_path("/usb-s8815/ethernet-gpio"); 1712ad6e398SLinus Walleij if (!eth) { 1722ad6e398SLinus Walleij pr_info("could not find any ethernet GPIO\n"); 1732ad6e398SLinus Walleij return 0; 1742ad6e398SLinus Walleij } 1752ad6e398SLinus Walleij gpio = of_get_gpio(eth, 0); 1762ad6e398SLinus Walleij err = gpio_request(gpio, "eth_irq"); 1772ad6e398SLinus Walleij if (err) { 1782ad6e398SLinus Walleij pr_info("failed to request ethernet GPIO\n"); 1792ad6e398SLinus Walleij return -ENODEV; 1802ad6e398SLinus Walleij } 1812ad6e398SLinus Walleij err = gpio_direction_input(gpio); 1822ad6e398SLinus Walleij if (err) { 1832ad6e398SLinus Walleij pr_info("failed to set ethernet GPIO as input\n"); 1842ad6e398SLinus Walleij return -ENODEV; 1852ad6e398SLinus Walleij } 1862ad6e398SLinus Walleij irq = gpio_to_irq(gpio); 1872ad6e398SLinus Walleij pr_info("enabled USB-S8815 ethernet GPIO %d, IRQ %d\n", gpio, irq); 1882ad6e398SLinus Walleij return 0; 1892ad6e398SLinus Walleij } 1902ad6e398SLinus Walleij device_initcall(cpu8815_eth_init); 1912ad6e398SLinus Walleij 1924fd243c6SLinus Walleij /* 1934fd243c6SLinus Walleij * TODO: 1944fd243c6SLinus Walleij * cannot be set from device tree, convert to a proper DT 1954fd243c6SLinus Walleij * binding. 1964fd243c6SLinus Walleij */ 1974fd243c6SLinus Walleij static struct mmci_platform_data mmcsd_plat_data = { 1984fd243c6SLinus Walleij .ocr_mask = MMC_VDD_29_30, 1994fd243c6SLinus Walleij }; 2004fd243c6SLinus Walleij 2014fd243c6SLinus Walleij /* 2024fd243c6SLinus Walleij * This GPIO pin turns on a line that is used to detect card insertion 2034fd243c6SLinus Walleij * on this board. 2044fd243c6SLinus Walleij */ 2054fd243c6SLinus Walleij static int __init cpu8815_mmcsd_init(void) 2064fd243c6SLinus Walleij { 2074fd243c6SLinus Walleij struct device_node *cdbias; 2084fd243c6SLinus Walleij int gpio, err; 2094fd243c6SLinus Walleij 2104fd243c6SLinus Walleij cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio"); 2114fd243c6SLinus Walleij if (!cdbias) { 2124fd243c6SLinus Walleij pr_info("could not find MMC/SD card detect bias node\n"); 2134fd243c6SLinus Walleij return 0; 2144fd243c6SLinus Walleij } 2154fd243c6SLinus Walleij gpio = of_get_gpio(cdbias, 0); 2164fd243c6SLinus Walleij if (gpio < 0) { 2174fd243c6SLinus Walleij pr_info("could not obtain MMC/SD card detect bias GPIO\n"); 2184fd243c6SLinus Walleij return 0; 2194fd243c6SLinus Walleij } 2204fd243c6SLinus Walleij err = gpio_request(gpio, "card detect bias"); 2214fd243c6SLinus Walleij if (err) { 2224fd243c6SLinus Walleij pr_info("failed to request card detect bias GPIO %d\n", gpio); 2234fd243c6SLinus Walleij return -ENODEV; 2244fd243c6SLinus Walleij } 2254fd243c6SLinus Walleij err = gpio_direction_output(gpio, 0); 2264fd243c6SLinus Walleij if (err){ 2274fd243c6SLinus Walleij pr_info("failed to set GPIO %d as output, low\n", gpio); 2284fd243c6SLinus Walleij return err; 2294fd243c6SLinus Walleij } 2304fd243c6SLinus Walleij pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio); 2314fd243c6SLinus Walleij return 0; 2324fd243c6SLinus Walleij } 2334fd243c6SLinus Walleij device_initcall(cpu8815_mmcsd_init); 2344fd243c6SLinus Walleij 2354fd243c6SLinus Walleij 236f8635abdSLinus Walleij /* These are mostly to get the right device names for the clock lookups */ 237f8635abdSLinus Walleij static struct of_dev_auxdata cpu8815_auxdata_lookup[] __initdata = { 238ba785205SLinus Walleij OF_DEV_AUXDATA("stericsson,fsmc-nand", NOMADIK_FSMC_BASE, 2396e2b07a1SLinus Walleij NULL, &cpu8815_nand_data), 2404fd243c6SLinus Walleij OF_DEV_AUXDATA("arm,primecell", NOMADIK_SDI_BASE, 2416e2b07a1SLinus Walleij NULL, &mmcsd_plat_data), 242f8635abdSLinus Walleij { /* sentinel */ }, 243f8635abdSLinus Walleij }; 244f8635abdSLinus Walleij 245f8635abdSLinus Walleij static void __init cpu8815_init_of(void) 246f8635abdSLinus Walleij { 247f8635abdSLinus Walleij #ifdef CONFIG_CACHE_L2X0 248f8635abdSLinus Walleij /* At full speed latency must be >=2, so 0x249 in low bits */ 249f8635abdSLinus Walleij l2x0_of_init(0x00730249, 0xfe000fff); 250f8635abdSLinus Walleij #endif 251f8635abdSLinus Walleij of_platform_populate(NULL, of_default_bus_match_table, 252f8635abdSLinus Walleij cpu8815_auxdata_lookup, NULL); 253f8635abdSLinus Walleij } 254f8635abdSLinus Walleij 255f8635abdSLinus Walleij static const char * cpu8815_board_compat[] = { 256f8635abdSLinus Walleij "calaosystems,usb-s8815", 257f8635abdSLinus Walleij NULL, 258f8635abdSLinus Walleij }; 259f8635abdSLinus Walleij 260f8635abdSLinus Walleij DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815") 261f8635abdSLinus Walleij .map_io = cpu8815_map_io, 262f8635abdSLinus Walleij .init_time = cpu8815_timer_init_of, 263f8635abdSLinus Walleij .init_machine = cpu8815_init_of, 264f8635abdSLinus Walleij .restart = cpu8815_restart, 265f8635abdSLinus Walleij .dt_compat = cpu8815_board_compat, 266f8635abdSLinus Walleij MACHINE_END 267