1// SPDX-License-Identifier: GPL-2.0-only 2/* linux/arch/arm/mach-pxa/xcep.c 3 * 4 * Support for the Iskratel Electronics XCEP platform as used in 5 * the Libera instruments from Instrumentation Technologies. 6 * 7 * Author: Ales Bardorfer <ales@i-tech.si> 8 * Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk> 9 * Contributions by: Matej Kenda <matej.kenda@i-tech.si> 10 * Created: June 2006 11 * Copyright: (C) 2006-2009 Instrumentation Technologies 12 */ 13 14#include <linux/platform_device.h> 15#include <linux/i2c.h> 16#include <linux/platform_data/i2c-pxa.h> 17#include <linux/smc91x.h> 18#include <linux/mtd/mtd.h> 19#include <linux/mtd/partitions.h> 20#include <linux/mtd/physmap.h> 21 22#include <asm/mach-types.h> 23#include <asm/mach/arch.h> 24#include <asm/mach/irq.h> 25#include <asm/mach/map.h> 26 27#include <mach/hardware.h> 28#include "pxa25x.h" 29#include <mach/smemc.h> 30 31#include "generic.h" 32#include "devices.h" 33 34#define XCEP_ETH_PHYS (PXA_CS3_PHYS + 0x00000300) 35#define XCEP_ETH_PHYS_END (PXA_CS3_PHYS + 0x000fffff) 36#define XCEP_ETH_ATTR (PXA_CS3_PHYS + 0x02000000) 37#define XCEP_ETH_ATTR_END (PXA_CS3_PHYS + 0x020fffff) 38#define XCEP_ETH_IRQ IRQ_GPIO0 39 40/* XCEP CPLD base */ 41#define XCEP_CPLD_BASE 0xf0000000 42 43 44/* Flash partitions. */ 45 46static struct mtd_partition xcep_partitions[] = { 47 { 48 .name = "Bootloader", 49 .size = 0x00040000, 50 .offset = 0, 51 .mask_flags = MTD_WRITEABLE 52 }, { 53 .name = "Bootloader ENV", 54 .size = 0x00040000, 55 .offset = 0x00040000, 56 .mask_flags = MTD_WRITEABLE 57 }, { 58 .name = "Kernel", 59 .size = 0x00100000, 60 .offset = 0x00080000, 61 }, { 62 .name = "Rescue fs", 63 .size = 0x00280000, 64 .offset = 0x00180000, 65 }, { 66 .name = "Filesystem", 67 .size = MTDPART_SIZ_FULL, 68 .offset = 0x00400000 69 } 70}; 71 72static struct physmap_flash_data xcep_flash_data[] = { 73 { 74 .width = 4, /* bankwidth in bytes */ 75 .parts = xcep_partitions, 76 .nr_parts = ARRAY_SIZE(xcep_partitions) 77 } 78}; 79 80static struct resource flash_resource = { 81 .start = PXA_CS0_PHYS, 82 .end = PXA_CS0_PHYS + SZ_32M - 1, 83 .flags = IORESOURCE_MEM, 84}; 85 86static struct platform_device flash_device = { 87 .name = "physmap-flash", 88 .id = 0, 89 .dev = { 90 .platform_data = xcep_flash_data, 91 }, 92 .resource = &flash_resource, 93 .num_resources = 1, 94}; 95 96 97 98/* SMC LAN91C111 network controller. */ 99 100static struct resource smc91x_resources[] = { 101 [0] = { 102 .name = "smc91x-regs", 103 .start = XCEP_ETH_PHYS, 104 .end = XCEP_ETH_PHYS_END, 105 .flags = IORESOURCE_MEM, 106 }, 107 [1] = { 108 .start = XCEP_ETH_IRQ, 109 .end = XCEP_ETH_IRQ, 110 .flags = IORESOURCE_IRQ, 111 }, 112 [2] = { 113 .name = "smc91x-attrib", 114 .start = XCEP_ETH_ATTR, 115 .end = XCEP_ETH_ATTR_END, 116 .flags = IORESOURCE_MEM, 117 }, 118}; 119 120static struct smc91x_platdata xcep_smc91x_info = { 121 .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT | 122 SMC91X_NOWAIT | SMC91X_USE_DMA, 123}; 124 125static struct platform_device smc91x_device = { 126 .name = "smc91x", 127 .id = -1, 128 .num_resources = ARRAY_SIZE(smc91x_resources), 129 .resource = smc91x_resources, 130 .dev = { 131 .platform_data = &xcep_smc91x_info, 132 }, 133}; 134 135 136static struct platform_device *devices[] __initdata = { 137 &flash_device, 138 &smc91x_device, 139}; 140 141 142/* We have to state that there are HWMON devices on the I2C bus on XCEP. 143 * Drivers for HWMON verify capabilities of the adapter when loading and 144 * refuse to attach if the adapter doesn't support HWMON class of devices. */ 145static struct i2c_pxa_platform_data xcep_i2c_platform_data = { 146 .class = I2C_CLASS_HWMON 147}; 148 149 150static mfp_cfg_t xcep_pin_config[] __initdata = { 151 GPIO79_nCS_3, /* SMC 91C111 chip select. */ 152 GPIO80_nCS_4, /* CPLD chip select. */ 153 /* SSP communication to MSP430 */ 154 GPIO23_SSP1_SCLK, 155 GPIO24_SSP1_SFRM, 156 GPIO25_SSP1_TXD, 157 GPIO26_SSP1_RXD, 158 GPIO27_SSP1_EXTCLK 159}; 160 161static void __init xcep_init(void) 162{ 163 pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config)); 164 165 pxa_set_ffuart_info(NULL); 166 pxa_set_btuart_info(NULL); 167 pxa_set_stuart_info(NULL); 168 pxa_set_hwuart_info(NULL); 169 170 /* See Intel XScale Developer's Guide for details */ 171 /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */ 172 __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1); 173 /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */ 174 __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2); 175 176 platform_add_devices(ARRAY_AND_SIZE(devices)); 177 pxa_set_i2c_info(&xcep_i2c_platform_data); 178} 179 180MACHINE_START(XCEP, "Iskratel XCEP") 181 .atag_offset = 0x100, 182 .init_machine = xcep_init, 183 .map_io = pxa25x_map_io, 184 .nr_irqs = PXA_NR_IRQS, 185 .init_irq = pxa25x_init_irq, 186 .handle_irq = pxa25x_handle_irq, 187 .init_time = pxa_timer_init, 188 .restart = pxa_restart, 189MACHINE_END 190 191