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> 28f8635abdSLinus Walleij #include <linux/of_irq.h> 292ad6e398SLinus Walleij #include <linux/of_gpio.h> 30f8635abdSLinus Walleij #include <linux/of_address.h> 31f8635abdSLinus Walleij #include <linux/of_platform.h> 322ad6e398SLinus Walleij #include <linux/gpio.h> 3328ad94ecSAlessandro Rubini 34f8635abdSLinus Walleij #include <asm/mach/arch.h> 3528ad94ecSAlessandro Rubini #include <asm/mach/map.h> 36f8635abdSLinus Walleij #include <asm/mach/time.h> 3727bda036SLinus Walleij #include <asm/mach-types.h> 3828ad94ecSAlessandro Rubini 390b260fd4SAlessandro Rubini #include <asm/cacheflush.h> 400b260fd4SAlessandro Rubini #include <asm/hardware/cache-l2x0.h> 410b260fd4SAlessandro Rubini 42dea3eacdSLinus Walleij /* 43dea3eacdSLinus Walleij * These are the only hard-coded address offsets we still have to use. 44dea3eacdSLinus Walleij */ 45dea3eacdSLinus Walleij #define NOMADIK_FSMC_BASE 0x10100000 /* FSMC registers */ 46dea3eacdSLinus Walleij #define NOMADIK_SDRAMC_BASE 0x10110000 /* SDRAM Controller */ 47dea3eacdSLinus Walleij #define NOMADIK_CLCDC_BASE 0x10120000 /* CLCD Controller */ 48dea3eacdSLinus Walleij #define NOMADIK_MDIF_BASE 0x10120000 /* MDIF */ 49dea3eacdSLinus Walleij #define NOMADIK_DMA0_BASE 0x10130000 /* DMA0 Controller */ 50dea3eacdSLinus Walleij #define NOMADIK_IC_BASE 0x10140000 /* Vectored Irq Controller */ 51dea3eacdSLinus Walleij #define NOMADIK_DMA1_BASE 0x10150000 /* DMA1 Controller */ 52dea3eacdSLinus Walleij #define NOMADIK_USB_BASE 0x10170000 /* USB-OTG conf reg base */ 53dea3eacdSLinus Walleij #define NOMADIK_CRYP_BASE 0x10180000 /* Crypto processor */ 54dea3eacdSLinus Walleij #define NOMADIK_SHA1_BASE 0x10190000 /* SHA-1 Processor */ 55dea3eacdSLinus Walleij #define NOMADIK_XTI_BASE 0x101A0000 /* XTI */ 56dea3eacdSLinus Walleij #define NOMADIK_RNG_BASE 0x101B0000 /* Random number generator */ 57dea3eacdSLinus Walleij #define NOMADIK_SRC_BASE 0x101E0000 /* SRC base */ 58dea3eacdSLinus Walleij #define NOMADIK_WDOG_BASE 0x101E1000 /* Watchdog */ 59dea3eacdSLinus Walleij #define NOMADIK_MTU0_BASE 0x101E2000 /* Multiple Timer 0 */ 60dea3eacdSLinus Walleij #define NOMADIK_MTU1_BASE 0x101E3000 /* Multiple Timer 1 */ 61dea3eacdSLinus Walleij #define NOMADIK_GPIO0_BASE 0x101E4000 /* GPIO0 */ 62dea3eacdSLinus Walleij #define NOMADIK_GPIO1_BASE 0x101E5000 /* GPIO1 */ 63dea3eacdSLinus Walleij #define NOMADIK_GPIO2_BASE 0x101E6000 /* GPIO2 */ 64dea3eacdSLinus Walleij #define NOMADIK_GPIO3_BASE 0x101E7000 /* GPIO3 */ 65dea3eacdSLinus Walleij #define NOMADIK_RTC_BASE 0x101E8000 /* Real Time Clock base */ 66dea3eacdSLinus Walleij #define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */ 67dea3eacdSLinus Walleij #define NOMADIK_OWM_BASE 0x101EA000 /* One wire master */ 68dea3eacdSLinus Walleij #define NOMADIK_SCR_BASE 0x101EF000 /* Secure Control registers */ 69dea3eacdSLinus Walleij #define NOMADIK_MSP2_BASE 0x101F0000 /* MSP 2 interface */ 70dea3eacdSLinus Walleij #define NOMADIK_MSP1_BASE 0x101F1000 /* MSP 1 interface */ 71dea3eacdSLinus Walleij #define NOMADIK_UART2_BASE 0x101F2000 /* UART 2 interface */ 72dea3eacdSLinus Walleij #define NOMADIK_SSIRx_BASE 0x101F3000 /* SSI 8-ch rx interface */ 73dea3eacdSLinus Walleij #define NOMADIK_SSITx_BASE 0x101F4000 /* SSI 8-ch tx interface */ 74dea3eacdSLinus Walleij #define NOMADIK_MSHC_BASE 0x101F5000 /* Memory Stick(Pro) Host */ 75dea3eacdSLinus Walleij #define NOMADIK_SDI_BASE 0x101F6000 /* SD-card/MM-Card */ 76dea3eacdSLinus Walleij #define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */ 77dea3eacdSLinus Walleij #define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */ 78dea3eacdSLinus Walleij #define NOMADIK_MSP0_BASE 0x101F9000 /* MSP 0 interface */ 79dea3eacdSLinus Walleij #define NOMADIK_FIRDA_BASE 0x101FA000 /* FIrDA interface */ 80dea3eacdSLinus Walleij #define NOMADIK_UART1_BASE 0x101FB000 /* UART 1 interface */ 81dea3eacdSLinus Walleij #define NOMADIK_SSP_BASE 0x101FC000 /* SSP interface */ 82dea3eacdSLinus Walleij #define NOMADIK_UART0_BASE 0x101FD000 /* UART 0 interface */ 83dea3eacdSLinus Walleij #define NOMADIK_SGA_BASE 0x101FE000 /* SGA interface */ 84dea3eacdSLinus Walleij #define NOMADIK_L2CC_BASE 0x10210000 /* L2 Cache controller */ 85dea3eacdSLinus Walleij #define NOMADIK_UART1_VBASE 0xF01FB000 86dea3eacdSLinus Walleij 87dea3eacdSLinus Walleij /* This is needed for LL-debug/earlyprintk/debug-macro.S */ 88dea3eacdSLinus Walleij static struct map_desc cpu8815_io_desc[] __initdata = { 8928ad94ecSAlessandro Rubini { 90dea3eacdSLinus Walleij .virtual = NOMADIK_UART1_VBASE, 91dea3eacdSLinus Walleij .pfn = __phys_to_pfn(NOMADIK_UART1_BASE), 92dea3eacdSLinus Walleij .length = SZ_4K, 9328ad94ecSAlessandro Rubini .type = MT_DEVICE, 94dea3eacdSLinus Walleij }, 9528ad94ecSAlessandro Rubini }; 9628ad94ecSAlessandro Rubini 975f66d482SLinus Walleij static void __init cpu8815_map_io(void) 9828ad94ecSAlessandro Rubini { 99dea3eacdSLinus Walleij iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc)); 10028ad94ecSAlessandro Rubini } 10128ad94ecSAlessandro Rubini 1027b6d864bSRobin Holt static void cpu8815_restart(enum reboot_mode mode, const char *cmd) 10335b47a40SRussell King { 104dea3eacdSLinus Walleij void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K); 10535b47a40SRussell King 10635b47a40SRussell King /* FIXME: use egpio when implemented */ 10735b47a40SRussell King 10835b47a40SRussell King /* Write anything to Reset status register */ 109dea3eacdSLinus Walleij writel(1, srcbase + 0x18); 11035b47a40SRussell King } 111f8635abdSLinus Walleij 1122ad6e398SLinus Walleij /* 1134fd243c6SLinus Walleij * This GPIO pin turns on a line that is used to detect card insertion 1144fd243c6SLinus Walleij * on this board. 1154fd243c6SLinus Walleij */ 1164fd243c6SLinus Walleij static int __init cpu8815_mmcsd_init(void) 1174fd243c6SLinus Walleij { 1184fd243c6SLinus Walleij struct device_node *cdbias; 1194fd243c6SLinus Walleij int gpio, err; 1204fd243c6SLinus Walleij 1214fd243c6SLinus Walleij cdbias = of_find_node_by_path("/usb-s8815/mmcsd-gpio"); 1224fd243c6SLinus Walleij if (!cdbias) { 1234fd243c6SLinus Walleij pr_info("could not find MMC/SD card detect bias node\n"); 1244fd243c6SLinus Walleij return 0; 1254fd243c6SLinus Walleij } 1264fd243c6SLinus Walleij gpio = of_get_gpio(cdbias, 0); 1274fd243c6SLinus Walleij if (gpio < 0) { 1284fd243c6SLinus Walleij pr_info("could not obtain MMC/SD card detect bias GPIO\n"); 1294fd243c6SLinus Walleij return 0; 1304fd243c6SLinus Walleij } 1314fd243c6SLinus Walleij err = gpio_request(gpio, "card detect bias"); 1324fd243c6SLinus Walleij if (err) { 1334fd243c6SLinus Walleij pr_info("failed to request card detect bias GPIO %d\n", gpio); 1344fd243c6SLinus Walleij return -ENODEV; 1354fd243c6SLinus Walleij } 1364fd243c6SLinus Walleij err = gpio_direction_output(gpio, 0); 1374fd243c6SLinus Walleij if (err){ 1384fd243c6SLinus Walleij pr_info("failed to set GPIO %d as output, low\n", gpio); 1394fd243c6SLinus Walleij return err; 1404fd243c6SLinus Walleij } 1414fd243c6SLinus Walleij pr_info("enabled USB-S8815 CD bias GPIO %d, low\n", gpio); 1424fd243c6SLinus Walleij return 0; 1434fd243c6SLinus Walleij } 1444fd243c6SLinus Walleij device_initcall(cpu8815_mmcsd_init); 1454fd243c6SLinus Walleij 146f8635abdSLinus Walleij static const char * cpu8815_board_compat[] = { 147451f2334SLinus Walleij "st,nomadik-nhk-15", 148f8635abdSLinus Walleij "calaosystems,usb-s8815", 149f8635abdSLinus Walleij NULL, 150f8635abdSLinus Walleij }; 151f8635abdSLinus Walleij 152f8635abdSLinus Walleij DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815") 1538523f615SRussell King /* At full speed latency must be >=2, so 0x249 in low bits */ 1548523f615SRussell King .l2c_aux_val = 0x00700249, 1558523f615SRussell King .l2c_aux_mask = 0xfe0fefff, 156f8635abdSLinus Walleij .map_io = cpu8815_map_io, 157f8635abdSLinus Walleij .restart = cpu8815_restart, 158f8635abdSLinus Walleij .dt_compat = cpu8815_board_compat, 159f8635abdSLinus Walleij MACHINE_END 160