kernel/arch/arm/mach-dove/common.c

   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/dma-mapping.h>
  13 #include <linux/init.h>
  14 #include <linux/of.h>
  15 #include <linux/of_platform.h>
  16 #include <linux/platform_data/dma-mv_xor.h>
  17 #include <linux/platform_data/usb-ehci-orion.h>
  18 #include <linux/platform_device.h>
  19 #include <asm/hardware/cache-tauros2.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/map.h>
  22 #include <asm/mach/time.h>
  23 #include <mach/bridge-regs.h>
  24 #include <mach/pm.h>
  25 #include <plat/common.h>
  26 #include <plat/irq.h>
  27 #include <plat/time.h>
  28 #include "common.h"
  29
  30 /* These can go away once Dove uses the mvebu-mbus DT binding */
  31 #define DOVE_MBUS_PCIE0_MEM_TARGET    0x4
  32 #define DOVE_MBUS_PCIE0_MEM_ATTR      0xe8
  33 #define DOVE_MBUS_PCIE0_IO_TARGET     0x4
  34 #define DOVE_MBUS_PCIE0_IO_ATTR       0xe0
  35 #define DOVE_MBUS_PCIE1_MEM_TARGET    0x8
  36 #define DOVE_MBUS_PCIE1_MEM_ATTR      0xe8
  37 #define DOVE_MBUS_PCIE1_IO_TARGET     0x8
  38 #define DOVE_MBUS_PCIE1_IO_ATTR       0xe0
  39 #define DOVE_MBUS_CESA_TARGET         0x3
  40 #define DOVE_MBUS_CESA_ATTR           0x1
  41 #define DOVE_MBUS_BOOTROM_TARGET      0x1
  42 #define DOVE_MBUS_BOOTROM_ATTR        0xfd
  43 #define DOVE_MBUS_SCRATCHPAD_TARGET   0xd
  44 #define DOVE_MBUS_SCRATCHPAD_ATTR     0x0
  45
  46 /*****************************************************************************
  47  * I/O Address Mapping
  48  ****************************************************************************/
  49 static struct map_desc dove_io_desc[] __initdata = {
  50         {
  51                 .virtual        = (unsigned long) DOVE_SB_REGS_VIRT_BASE,
  52                 .pfn            = __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE),
  53                 .length         = DOVE_SB_REGS_SIZE,
  54                 .type           = MT_DEVICE,
  55         }, {
  56                 .virtual        = (unsigned long) DOVE_NB_REGS_VIRT_BASE,
  57                 .pfn            = __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE),
  58                 .length         = DOVE_NB_REGS_SIZE,
  59                 .type           = MT_DEVICE,
  60         },
  61 };
  62
  63 void __init dove_map_io(void)
  64 {
  65         iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc));
  66 }
  67
  68 /*****************************************************************************
  69  * CLK tree
  70  ****************************************************************************/
  71 static int dove_tclk;
  72
  73 static DEFINE_SPINLOCK(gating_lock);
  74 static struct clk *tclk;
  75
  76 static struct clk __init *dove_register_gate(const char *name,
  77                                              const char *parent, u8 bit_idx)
  78 {
  79         return clk_register_gate(NULL, name, parent, 0,
  80                                  (void __iomem *)CLOCK_GATING_CONTROL,
  81                                  bit_idx, 0, &gating_lock);
  82 }
  83
  84 static void __init dove_clk_init(void)
  85 {
  86         struct clk *usb0, *usb1, *sata, *pex0, *pex1, *sdio0, *sdio1;
  87         struct clk *nand, *camera, *i2s0, *i2s1, *crypto, *ac97, *pdma;
  88         struct clk *xor0, *xor1, *ge, *gephy;
  89
  90         tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
  91                                        dove_tclk);
  92
  93         usb0 = dove_register_gate("usb0", "tclk", CLOCK_GATING_BIT_USB0);
  94         usb1 = dove_register_gate("usb1", "tclk", CLOCK_GATING_BIT_USB1);
  95         sata = dove_register_gate("sata", "tclk", CLOCK_GATING_BIT_SATA);
  96         pex0 = dove_register_gate("pex0", "tclk", CLOCK_GATING_BIT_PCIE0);
  97         pex1 = dove_register_gate("pex1", "tclk", CLOCK_GATING_BIT_PCIE1);
  98         sdio0 = dove_register_gate("sdio0", "tclk", CLOCK_GATING_BIT_SDIO0);
  99         sdio1 = dove_register_gate("sdio1", "tclk", CLOCK_GATING_BIT_SDIO1);
 100         nand = dove_register_gate("nand", "tclk", CLOCK_GATING_BIT_NAND);
 101         camera = dove_register_gate("camera", "tclk", CLOCK_GATING_BIT_CAMERA);
 102         i2s0 = dove_register_gate("i2s0", "tclk", CLOCK_GATING_BIT_I2S0);
 103         i2s1 = dove_register_gate("i2s1", "tclk", CLOCK_GATING_BIT_I2S1);
 104         crypto = dove_register_gate("crypto", "tclk", CLOCK_GATING_BIT_CRYPTO);
 105         ac97 = dove_register_gate("ac97", "tclk", CLOCK_GATING_BIT_AC97);
 106         pdma = dove_register_gate("pdma", "tclk", CLOCK_GATING_BIT_PDMA);
 107         xor0 = dove_register_gate("xor0", "tclk", CLOCK_GATING_BIT_XOR0);
 108         xor1 = dove_register_gate("xor1", "tclk", CLOCK_GATING_BIT_XOR1);
 109         gephy = dove_register_gate("gephy", "tclk", CLOCK_GATING_BIT_GIGA_PHY);
 110         ge = dove_register_gate("ge", "gephy", CLOCK_GATING_BIT_GBE);
 111
 112         orion_clkdev_add(NULL, "orion_spi.0", tclk);
 113         orion_clkdev_add(NULL, "orion_spi.1", tclk);
 114         orion_clkdev_add(NULL, "orion_wdt", tclk);
 115         orion_clkdev_add(NULL, "mv64xxx_i2c.0", tclk);
 116
 117         orion_clkdev_add(NULL, "orion-ehci.0", usb0);
 118         orion_clkdev_add(NULL, "orion-ehci.1", usb1);
 119         orion_clkdev_add(NULL, "mv643xx_eth_port.0", ge);
 120         orion_clkdev_add(NULL, "sata_mv.0", sata);
 121         orion_clkdev_add("0", "pcie", pex0);
 122         orion_clkdev_add("1", "pcie", pex1);
 123         orion_clkdev_add(NULL, "sdhci-dove.0", sdio0);
 124         orion_clkdev_add(NULL, "sdhci-dove.1", sdio1);
 125         orion_clkdev_add(NULL, "orion_nand", nand);
 126         orion_clkdev_add(NULL, "cafe1000-ccic.0", camera);
 127         orion_clkdev_add(NULL, "mvebu-audio.0", i2s0);
 128         orion_clkdev_add(NULL, "mvebu-audio.1", i2s1);
 129         orion_clkdev_add(NULL, "mv_crypto", crypto);
 130         orion_clkdev_add(NULL, "dove-ac97", ac97);
 131         orion_clkdev_add(NULL, "dove-pdma", pdma);
 132         orion_clkdev_add(NULL, MV_XOR_NAME ".0", xor0);
 133         orion_clkdev_add(NULL, MV_XOR_NAME ".1", xor1);
 134 }
 135
 136 /*****************************************************************************
 137  * EHCI0
 138  ****************************************************************************/
 139 void __init dove_ehci0_init(void)
 140 {
 141         orion_ehci_init(DOVE_USB0_PHYS_BASE, IRQ_DOVE_USB0, EHCI_PHY_NA);
 142 }
 143
 144 /*****************************************************************************
 145  * EHCI1
 146  ****************************************************************************/
 147 void __init dove_ehci1_init(void)
 148 {
 149         orion_ehci_1_init(DOVE_USB1_PHYS_BASE, IRQ_DOVE_USB1);
 150 }
 151
 152 /*****************************************************************************
 153  * GE00
 154  ****************************************************************************/
 155 void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data)
 156 {
 157         orion_ge00_init(eth_data, DOVE_GE00_PHYS_BASE,
 158                         IRQ_DOVE_GE00_SUM, IRQ_DOVE_GE00_ERR,
 159                         1600);
 160 }
 161
 162 /*****************************************************************************
 163  * SoC RTC
 164  ****************************************************************************/
 165 static void __init dove_rtc_init(void)
 166 {
 167         orion_rtc_init(DOVE_RTC_PHYS_BASE, IRQ_DOVE_RTC);
 168 }
 169
 170 /*****************************************************************************
 171  * SATA
 172  ****************************************************************************/
 173 void __init dove_sata_init(struct mv_sata_platform_data *sata_data)
 174 {
 175         orion_sata_init(sata_data, DOVE_SATA_PHYS_BASE, IRQ_DOVE_SATA);
 176
 177 }
 178
 179 /*****************************************************************************
 180  * UART0
 181  ****************************************************************************/
 182 void __init dove_uart0_init(void)
 183 {
 184         orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE,
 185                          IRQ_DOVE_UART_0, tclk);
 186 }
 187
 188 /*****************************************************************************
 189  * UART1
 190  ****************************************************************************/
 191 void __init dove_uart1_init(void)
 192 {
 193         orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE,
 194                          IRQ_DOVE_UART_1, tclk);
 195 }
 196
 197 /*****************************************************************************
 198  * UART2
 199  ****************************************************************************/
 200 void __init dove_uart2_init(void)
 201 {
 202         orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE,
 203                          IRQ_DOVE_UART_2, tclk);
 204 }
 205
 206 /*****************************************************************************
 207  * UART3
 208  ****************************************************************************/
 209 void __init dove_uart3_init(void)
 210 {
 211         orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE,
 212                          IRQ_DOVE_UART_3, tclk);
 213 }
 214
 215 /*****************************************************************************
 216  * SPI
 217  ****************************************************************************/
 218 void __init dove_spi0_init(void)
 219 {
 220         orion_spi_init(DOVE_SPI0_PHYS_BASE);
 221 }
 222
 223 void __init dove_spi1_init(void)
 224 {
 225         orion_spi_1_init(DOVE_SPI1_PHYS_BASE);
 226 }
 227
 228 /*****************************************************************************
 229  * I2C
 230  ****************************************************************************/
 231 void __init dove_i2c_init(void)
 232 {
 233         orion_i2c_init(DOVE_I2C_PHYS_BASE, IRQ_DOVE_I2C, 10);
 234 }
 235
 236 /*****************************************************************************
 237  * Time handling
 238  ****************************************************************************/
 239 void __init dove_init_early(void)
 240 {
 241         orion_time_set_base(TIMER_VIRT_BASE);
 242         mvebu_mbus_init("marvell,dove-mbus",
 243                         BRIDGE_WINS_BASE, BRIDGE_WINS_SZ,
 244                         DOVE_MC_WINS_BASE, DOVE_MC_WINS_SZ);
 245 }
 246
 247 static int __init dove_find_tclk(void)
 248 {
 249         return 166666667;
 250 }
 251
 252 void __init dove_timer_init(void)
 253 {
 254         dove_tclk = dove_find_tclk();
 255         orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
 256                         IRQ_DOVE_BRIDGE, dove_tclk);
 257 }
 258
 259 /*****************************************************************************
 260  * XOR 0
 261  ****************************************************************************/
 262 static void __init dove_xor0_init(void)
 263 {
 264         orion_xor0_init(DOVE_XOR0_PHYS_BASE, DOVE_XOR0_HIGH_PHYS_BASE,
 265                         IRQ_DOVE_XOR_00, IRQ_DOVE_XOR_01);
 266 }
 267
 268 /*****************************************************************************
 269  * XOR 1
 270  ****************************************************************************/
 271 static void __init dove_xor1_init(void)
 272 {
 273         orion_xor1_init(DOVE_XOR1_PHYS_BASE, DOVE_XOR1_HIGH_PHYS_BASE,
 274                         IRQ_DOVE_XOR_10, IRQ_DOVE_XOR_11);
 275 }
 276
 277 /*****************************************************************************
 278  * SDIO
 279  ****************************************************************************/
 280 static u64 sdio_dmamask = DMA_BIT_MASK(32);
 281
 282 static struct resource dove_sdio0_resources[] = {
 283         {
 284                 .start  = DOVE_SDIO0_PHYS_BASE,
 285                 .end    = DOVE_SDIO0_PHYS_BASE + 0xff,
 286                 .flags  = IORESOURCE_MEM,
 287         }, {
 288                 .start  = IRQ_DOVE_SDIO0,
 289                 .end    = IRQ_DOVE_SDIO0,
 290                 .flags  = IORESOURCE_IRQ,
 291         },
 292 };
 293
 294 static struct platform_device dove_sdio0 = {
 295         .name           = "sdhci-dove",
 296         .id             = 0,
 297         .dev            = {
 298                 .dma_mask               = &sdio_dmamask,
 299                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 300         },
 301         .resource       = dove_sdio0_resources,
 302         .num_resources  = ARRAY_SIZE(dove_sdio0_resources),
 303 };
 304
 305 void __init dove_sdio0_init(void)
 306 {
 307         platform_device_register(&dove_sdio0);
 308 }
 309
 310 static struct resource dove_sdio1_resources[] = {
 311         {
 312                 .start  = DOVE_SDIO1_PHYS_BASE,
 313                 .end    = DOVE_SDIO1_PHYS_BASE + 0xff,
 314                 .flags  = IORESOURCE_MEM,
 315         }, {
 316                 .start  = IRQ_DOVE_SDIO1,
 317                 .end    = IRQ_DOVE_SDIO1,
 318                 .flags  = IORESOURCE_IRQ,
 319         },
 320 };
 321
 322 static struct platform_device dove_sdio1 = {
 323         .name           = "sdhci-dove",
 324         .id             = 1,
 325         .dev            = {
 326                 .dma_mask               = &sdio_dmamask,
 327                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 328         },
 329         .resource       = dove_sdio1_resources,
 330         .num_resources  = ARRAY_SIZE(dove_sdio1_resources),
 331 };
 332
 333 void __init dove_sdio1_init(void)
 334 {
 335         platform_device_register(&dove_sdio1);
 336 }
 337
 338 void __init dove_setup_cpu_wins(void)
 339 {
 340         /*
 341          * The PCIe windows will no longer be statically allocated
 342          * here once Dove is migrated to the pci-mvebu driver. The
 343          * non-PCIe windows will no longer be created here once Dove
 344          * fully moves to DT.
 345          */
 346         mvebu_mbus_add_window_remap_by_id(DOVE_MBUS_PCIE0_IO_TARGET,
 347                                           DOVE_MBUS_PCIE0_IO_ATTR,
 348                                           DOVE_PCIE0_IO_PHYS_BASE,
 349                                           DOVE_PCIE0_IO_SIZE,
 350                                           DOVE_PCIE0_IO_BUS_BASE);
 351         mvebu_mbus_add_window_remap_by_id(DOVE_MBUS_PCIE1_IO_TARGET,
 352                                           DOVE_MBUS_PCIE1_IO_ATTR,
 353                                           DOVE_PCIE1_IO_PHYS_BASE,
 354                                           DOVE_PCIE1_IO_SIZE,
 355                                           DOVE_PCIE1_IO_BUS_BASE);
 356         mvebu_mbus_add_window_by_id(DOVE_MBUS_PCIE0_MEM_TARGET,
 357                                     DOVE_MBUS_PCIE0_MEM_ATTR,
 358                                     DOVE_PCIE0_MEM_PHYS_BASE,
 359                                     DOVE_PCIE0_MEM_SIZE);
 360         mvebu_mbus_add_window_by_id(DOVE_MBUS_PCIE1_MEM_TARGET,
 361                                     DOVE_MBUS_PCIE1_MEM_ATTR,
 362                                     DOVE_PCIE1_MEM_PHYS_BASE,
 363                                     DOVE_PCIE1_MEM_SIZE);
 364         mvebu_mbus_add_window_by_id(DOVE_MBUS_CESA_TARGET,
 365                                     DOVE_MBUS_CESA_ATTR,
 366                                     DOVE_CESA_PHYS_BASE,
 367                                     DOVE_CESA_SIZE);
 368         mvebu_mbus_add_window_by_id(DOVE_MBUS_BOOTROM_TARGET,
 369                                     DOVE_MBUS_BOOTROM_ATTR,
 370                                     DOVE_BOOTROM_PHYS_BASE,
 371                                     DOVE_BOOTROM_SIZE);
 372         mvebu_mbus_add_window_by_id(DOVE_MBUS_SCRATCHPAD_TARGET,
 373                                     DOVE_MBUS_SCRATCHPAD_ATTR,
 374                                     DOVE_SCRATCHPAD_PHYS_BASE,
 375                                     DOVE_SCRATCHPAD_SIZE);
 376 }
 377
 378 void __init dove_init(void)
 379 {
 380         pr_info("Dove 88AP510 SoC, TCLK = %d MHz.\n",
 381                 (dove_tclk + 499999) / 1000000);
 382
 383 #ifdef CONFIG_CACHE_TAUROS2
 384         tauros2_init(0);
 385 #endif
 386         dove_setup_cpu_wins();
 387
 388         /* Setup root of clk tree */
 389         dove_clk_init();
 390
 391         /* internal devices that every board has */
 392         dove_rtc_init();
 393         dove_xor0_init();
 394         dove_xor1_init();
 395 }
 396
 397 void dove_restart(enum reboot_mode mode, const char *cmd)
 398 {
 399         /*
 400          * Enable soft reset to assert RSTOUTn.
 401          */
 402         writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);
 403
 404         /*
 405          * Assert soft reset.
 406          */
 407         writel(SOFT_RESET, SYSTEM_SOFT_RESET);
 408
 409         while (1)
 410                 ;
 411 }