1 /* 2 * arch/arm/mach-dove/common.c 3 * 4 * Core functions for Marvell Dove 88AP510 System On Chip 5 * 6 * This file is licensed under the terms of the GNU General Public 7 * License version 2. This program is licensed "as is" without any 8 * warranty of any kind, whether express or implied. 9 */ 10 11 #include <linux/clk-provider.h> 12 #include <linux/clk/mvebu.h> 13 #include <linux/dma-mapping.h> 14 #include <linux/init.h> 15 #include <linux/of.h> 16 #include <linux/of_platform.h> 17 #include <linux/platform_data/dma-mv_xor.h> 18 #include <linux/platform_data/usb-ehci-orion.h> 19 #include <linux/platform_device.h> 20 #include <asm/hardware/cache-tauros2.h> 21 #include <asm/mach/arch.h> 22 #include <asm/mach/map.h> 23 #include <asm/mach/time.h> 24 #include <mach/bridge-regs.h> 25 #include <mach/pm.h> 26 #include <plat/common.h> 27 #include <plat/irq.h> 28 #include <plat/time.h> 29 #include "common.h" 30 31 /***************************************************************************** 32 * I/O Address Mapping 33 ****************************************************************************/ 34 static struct map_desc dove_io_desc[] __initdata = { 35 { 36 .virtual = (unsigned long) DOVE_SB_REGS_VIRT_BASE, 37 .pfn = __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE), 38 .length = DOVE_SB_REGS_SIZE, 39 .type = MT_DEVICE, 40 }, { 41 .virtual = (unsigned long) DOVE_NB_REGS_VIRT_BASE, 42 .pfn = __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE), 43 .length = DOVE_NB_REGS_SIZE, 44 .type = MT_DEVICE, 45 }, 46 }; 47 48 void __init dove_map_io(void) 49 { 50 iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc)); 51 } 52 53 /***************************************************************************** 54 * CLK tree 55 ****************************************************************************/ 56 static int dove_tclk; 57 58 static DEFINE_SPINLOCK(gating_lock); 59 static struct clk *tclk; 60 61 static struct clk __init *dove_register_gate(const char *name, 62 const char *parent, u8 bit_idx) 63 { 64 return clk_register_gate(NULL, name, parent, 0, 65 (void __iomem *)CLOCK_GATING_CONTROL, 66 bit_idx, 0, &gating_lock); 67 } 68 69 static void __init dove_clk_init(void) 70 { 71 struct clk *usb0, *usb1, *sata, *pex0, *pex1, *sdio0, *sdio1; 72 struct clk *nand, *camera, *i2s0, *i2s1, *crypto, *ac97, *pdma; 73 struct clk *xor0, *xor1, *ge, *gephy; 74 75 tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT, 76 dove_tclk); 77 78 usb0 = dove_register_gate("usb0", "tclk", CLOCK_GATING_BIT_USB0); 79 usb1 = dove_register_gate("usb1", "tclk", CLOCK_GATING_BIT_USB1); 80 sata = dove_register_gate("sata", "tclk", CLOCK_GATING_BIT_SATA); 81 pex0 = dove_register_gate("pex0", "tclk", CLOCK_GATING_BIT_PCIE0); 82 pex1 = dove_register_gate("pex1", "tclk", CLOCK_GATING_BIT_PCIE1); 83 sdio0 = dove_register_gate("sdio0", "tclk", CLOCK_GATING_BIT_SDIO0); 84 sdio1 = dove_register_gate("sdio1", "tclk", CLOCK_GATING_BIT_SDIO1); 85 nand = dove_register_gate("nand", "tclk", CLOCK_GATING_BIT_NAND); 86 camera = dove_register_gate("camera", "tclk", CLOCK_GATING_BIT_CAMERA); 87 i2s0 = dove_register_gate("i2s0", "tclk", CLOCK_GATING_BIT_I2S0); 88 i2s1 = dove_register_gate("i2s1", "tclk", CLOCK_GATING_BIT_I2S1); 89 crypto = dove_register_gate("crypto", "tclk", CLOCK_GATING_BIT_CRYPTO); 90 ac97 = dove_register_gate("ac97", "tclk", CLOCK_GATING_BIT_AC97); 91 pdma = dove_register_gate("pdma", "tclk", CLOCK_GATING_BIT_PDMA); 92 xor0 = dove_register_gate("xor0", "tclk", CLOCK_GATING_BIT_XOR0); 93 xor1 = dove_register_gate("xor1", "tclk", CLOCK_GATING_BIT_XOR1); 94 gephy = dove_register_gate("gephy", "tclk", CLOCK_GATING_BIT_GIGA_PHY); 95 ge = dove_register_gate("ge", "gephy", CLOCK_GATING_BIT_GBE); 96 97 orion_clkdev_add(NULL, "orion_spi.0", tclk); 98 orion_clkdev_add(NULL, "orion_spi.1", tclk); 99 orion_clkdev_add(NULL, "orion_wdt", tclk); 100 orion_clkdev_add(NULL, "mv64xxx_i2c.0", tclk); 101 102 orion_clkdev_add(NULL, "orion-ehci.0", usb0); 103 orion_clkdev_add(NULL, "orion-ehci.1", usb1); 104 orion_clkdev_add(NULL, "mv643xx_eth_port.0", ge); 105 orion_clkdev_add(NULL, "sata_mv.0", sata); 106 orion_clkdev_add("0", "pcie", pex0); 107 orion_clkdev_add("1", "pcie", pex1); 108 orion_clkdev_add(NULL, "sdhci-dove.0", sdio0); 109 orion_clkdev_add(NULL, "sdhci-dove.1", sdio1); 110 orion_clkdev_add(NULL, "orion_nand", nand); 111 orion_clkdev_add(NULL, "cafe1000-ccic.0", camera); 112 orion_clkdev_add(NULL, "kirkwood-i2s.0", i2s0); 113 orion_clkdev_add(NULL, "kirkwood-i2s.1", i2s1); 114 orion_clkdev_add(NULL, "mv_crypto", crypto); 115 orion_clkdev_add(NULL, "dove-ac97", ac97); 116 orion_clkdev_add(NULL, "dove-pdma", pdma); 117 orion_clkdev_add(NULL, MV_XOR_NAME ".0", xor0); 118 orion_clkdev_add(NULL, MV_XOR_NAME ".1", xor1); 119 } 120 121 /***************************************************************************** 122 * EHCI0 123 ****************************************************************************/ 124 void __init dove_ehci0_init(void) 125 { 126 orion_ehci_init(DOVE_USB0_PHYS_BASE, IRQ_DOVE_USB0, EHCI_PHY_NA); 127 } 128 129 /***************************************************************************** 130 * EHCI1 131 ****************************************************************************/ 132 void __init dove_ehci1_init(void) 133 { 134 orion_ehci_1_init(DOVE_USB1_PHYS_BASE, IRQ_DOVE_USB1); 135 } 136 137 /***************************************************************************** 138 * GE00 139 ****************************************************************************/ 140 void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data) 141 { 142 orion_ge00_init(eth_data, DOVE_GE00_PHYS_BASE, 143 IRQ_DOVE_GE00_SUM, IRQ_DOVE_GE00_ERR, 144 1600); 145 } 146 147 /***************************************************************************** 148 * SoC RTC 149 ****************************************************************************/ 150 void __init dove_rtc_init(void) 151 { 152 orion_rtc_init(DOVE_RTC_PHYS_BASE, IRQ_DOVE_RTC); 153 } 154 155 /***************************************************************************** 156 * SATA 157 ****************************************************************************/ 158 void __init dove_sata_init(struct mv_sata_platform_data *sata_data) 159 { 160 orion_sata_init(sata_data, DOVE_SATA_PHYS_BASE, IRQ_DOVE_SATA); 161 162 } 163 164 /***************************************************************************** 165 * UART0 166 ****************************************************************************/ 167 void __init dove_uart0_init(void) 168 { 169 orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE, 170 IRQ_DOVE_UART_0, tclk); 171 } 172 173 /***************************************************************************** 174 * UART1 175 ****************************************************************************/ 176 void __init dove_uart1_init(void) 177 { 178 orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE, 179 IRQ_DOVE_UART_1, tclk); 180 } 181 182 /***************************************************************************** 183 * UART2 184 ****************************************************************************/ 185 void __init dove_uart2_init(void) 186 { 187 orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE, 188 IRQ_DOVE_UART_2, tclk); 189 } 190 191 /***************************************************************************** 192 * UART3 193 ****************************************************************************/ 194 void __init dove_uart3_init(void) 195 { 196 orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE, 197 IRQ_DOVE_UART_3, tclk); 198 } 199 200 /***************************************************************************** 201 * SPI 202 ****************************************************************************/ 203 void __init dove_spi0_init(void) 204 { 205 orion_spi_init(DOVE_SPI0_PHYS_BASE); 206 } 207 208 void __init dove_spi1_init(void) 209 { 210 orion_spi_1_init(DOVE_SPI1_PHYS_BASE); 211 } 212 213 /***************************************************************************** 214 * I2C 215 ****************************************************************************/ 216 void __init dove_i2c_init(void) 217 { 218 orion_i2c_init(DOVE_I2C_PHYS_BASE, IRQ_DOVE_I2C, 10); 219 } 220 221 /***************************************************************************** 222 * Time handling 223 ****************************************************************************/ 224 void __init dove_init_early(void) 225 { 226 orion_time_set_base(TIMER_VIRT_BASE); 227 } 228 229 static int __init dove_find_tclk(void) 230 { 231 return 166666667; 232 } 233 234 void __init dove_timer_init(void) 235 { 236 dove_tclk = dove_find_tclk(); 237 orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR, 238 IRQ_DOVE_BRIDGE, dove_tclk); 239 } 240 241 /***************************************************************************** 242 * Cryptographic Engines and Security Accelerator (CESA) 243 ****************************************************************************/ 244 void __init dove_crypto_init(void) 245 { 246 orion_crypto_init(DOVE_CRYPT_PHYS_BASE, DOVE_CESA_PHYS_BASE, 247 DOVE_CESA_SIZE, IRQ_DOVE_CRYPTO); 248 } 249 250 /***************************************************************************** 251 * XOR 0 252 ****************************************************************************/ 253 void __init dove_xor0_init(void) 254 { 255 orion_xor0_init(DOVE_XOR0_PHYS_BASE, DOVE_XOR0_HIGH_PHYS_BASE, 256 IRQ_DOVE_XOR_00, IRQ_DOVE_XOR_01); 257 } 258 259 /***************************************************************************** 260 * XOR 1 261 ****************************************************************************/ 262 void __init dove_xor1_init(void) 263 { 264 orion_xor1_init(DOVE_XOR1_PHYS_BASE, DOVE_XOR1_HIGH_PHYS_BASE, 265 IRQ_DOVE_XOR_10, IRQ_DOVE_XOR_11); 266 } 267 268 /***************************************************************************** 269 * SDIO 270 ****************************************************************************/ 271 static u64 sdio_dmamask = DMA_BIT_MASK(32); 272 273 static struct resource dove_sdio0_resources[] = { 274 { 275 .start = DOVE_SDIO0_PHYS_BASE, 276 .end = DOVE_SDIO0_PHYS_BASE + 0xff, 277 .flags = IORESOURCE_MEM, 278 }, { 279 .start = IRQ_DOVE_SDIO0, 280 .end = IRQ_DOVE_SDIO0, 281 .flags = IORESOURCE_IRQ, 282 }, 283 }; 284 285 static struct platform_device dove_sdio0 = { 286 .name = "sdhci-dove", 287 .id = 0, 288 .dev = { 289 .dma_mask = &sdio_dmamask, 290 .coherent_dma_mask = DMA_BIT_MASK(32), 291 }, 292 .resource = dove_sdio0_resources, 293 .num_resources = ARRAY_SIZE(dove_sdio0_resources), 294 }; 295 296 void __init dove_sdio0_init(void) 297 { 298 platform_device_register(&dove_sdio0); 299 } 300 301 static struct resource dove_sdio1_resources[] = { 302 { 303 .start = DOVE_SDIO1_PHYS_BASE, 304 .end = DOVE_SDIO1_PHYS_BASE + 0xff, 305 .flags = IORESOURCE_MEM, 306 }, { 307 .start = IRQ_DOVE_SDIO1, 308 .end = IRQ_DOVE_SDIO1, 309 .flags = IORESOURCE_IRQ, 310 }, 311 }; 312 313 static struct platform_device dove_sdio1 = { 314 .name = "sdhci-dove", 315 .id = 1, 316 .dev = { 317 .dma_mask = &sdio_dmamask, 318 .coherent_dma_mask = DMA_BIT_MASK(32), 319 }, 320 .resource = dove_sdio1_resources, 321 .num_resources = ARRAY_SIZE(dove_sdio1_resources), 322 }; 323 324 void __init dove_sdio1_init(void) 325 { 326 platform_device_register(&dove_sdio1); 327 } 328 329 void __init dove_init(void) 330 { 331 pr_info("Dove 88AP510 SoC, TCLK = %d MHz.\n", 332 (dove_tclk + 499999) / 1000000); 333 334 #ifdef CONFIG_CACHE_TAUROS2 335 tauros2_init(0); 336 #endif 337 dove_setup_cpu_mbus(); 338 339 /* Setup root of clk tree */ 340 dove_clk_init(); 341 342 /* internal devices that every board has */ 343 dove_rtc_init(); 344 dove_xor0_init(); 345 dove_xor1_init(); 346 } 347 348 void dove_restart(char mode, const char *cmd) 349 { 350 /* 351 * Enable soft reset to assert RSTOUTn. 352 */ 353 writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK); 354 355 /* 356 * Assert soft reset. 357 */ 358 writel(SOFT_RESET, SYSTEM_SOFT_RESET); 359 360 while (1) 361 ; 362 } 363