linux/arch/arm/mach-dove/common.c
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   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 <linux/soc/dove/pmu.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/* These can go away once Dove uses the mvebu-mbus DT binding */
  32#define DOVE_MBUS_PCIE0_MEM_TARGET    0x4
  33#define DOVE_MBUS_PCIE0_MEM_ATTR      0xe8
  34#define DOVE_MBUS_PCIE0_IO_TARGET     0x4
  35#define DOVE_MBUS_PCIE0_IO_ATTR       0xe0
  36#define DOVE_MBUS_PCIE1_MEM_TARGET    0x8
  37#define DOVE_MBUS_PCIE1_MEM_ATTR      0xe8
  38#define DOVE_MBUS_PCIE1_IO_TARGET     0x8
  39#define DOVE_MBUS_PCIE1_IO_ATTR       0xe0
  40#define DOVE_MBUS_CESA_TARGET         0x3
  41#define DOVE_MBUS_CESA_ATTR           0x1
  42#define DOVE_MBUS_BOOTROM_TARGET      0x1
  43#define DOVE_MBUS_BOOTROM_ATTR        0xfd
  44#define DOVE_MBUS_SCRATCHPAD_TARGET   0xd
  45#define DOVE_MBUS_SCRATCHPAD_ATTR     0x0
  46
  47/*****************************************************************************
  48 * I/O Address Mapping
  49 ****************************************************************************/
  50static struct map_desc dove_io_desc[] __initdata = {
  51        {
  52                .virtual        = (unsigned long) DOVE_SB_REGS_VIRT_BASE,
  53                .pfn            = __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE),
  54                .length         = DOVE_SB_REGS_SIZE,
  55                .type           = MT_DEVICE,
  56        }, {
  57                .virtual        = (unsigned long) DOVE_NB_REGS_VIRT_BASE,
  58                .pfn            = __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE),
  59                .length         = DOVE_NB_REGS_SIZE,
  60                .type           = MT_DEVICE,
  61        },
  62};
  63
  64void __init dove_map_io(void)
  65{
  66        iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc));
  67}
  68
  69/*****************************************************************************
  70 * CLK tree
  71 ****************************************************************************/
  72static int dove_tclk;
  73
  74static DEFINE_SPINLOCK(gating_lock);
  75static struct clk *tclk;
  76
  77static struct clk __init *dove_register_gate(const char *name,
  78                                             const char *parent, u8 bit_idx)
  79{
  80        return clk_register_gate(NULL, name, parent, 0,
  81                                 (void __iomem *)CLOCK_GATING_CONTROL,
  82                                 bit_idx, 0, &gating_lock);
  83}
  84
  85static void __init dove_clk_init(void)
  86{
  87        struct clk *usb0, *usb1, *sata, *pex0, *pex1, *sdio0, *sdio1;
  88        struct clk *nand, *camera, *i2s0, *i2s1, *crypto, *ac97, *pdma;
  89        struct clk *xor0, *xor1, *ge, *gephy;
  90
  91        tclk = clk_register_fixed_rate(NULL, "tclk", NULL, 0, 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 ****************************************************************************/
 139void __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 ****************************************************************************/
 147void __init dove_ehci1_init(void)
 148{
 149        orion_ehci_1_init(DOVE_USB1_PHYS_BASE, IRQ_DOVE_USB1);
 150}
 151
 152/*****************************************************************************
 153 * GE00
 154 ****************************************************************************/
 155void __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 ****************************************************************************/
 165static void __init dove_rtc_init(void)
 166{
 167        orion_rtc_init(DOVE_RTC_PHYS_BASE, IRQ_DOVE_RTC);
 168}
 169
 170/*****************************************************************************
 171 * SATA
 172 ****************************************************************************/
 173void __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 ****************************************************************************/
 182void __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 ****************************************************************************/
 191void __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 ****************************************************************************/
 200void __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 ****************************************************************************/
 209void __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 ****************************************************************************/
 218void __init dove_spi0_init(void)
 219{
 220        orion_spi_init(DOVE_SPI0_PHYS_BASE);
 221}
 222
 223void __init dove_spi1_init(void)
 224{
 225        orion_spi_1_init(DOVE_SPI1_PHYS_BASE);
 226}
 227
 228/*****************************************************************************
 229 * I2C
 230 ****************************************************************************/
 231void __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 ****************************************************************************/
 239void __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
 247static int __init dove_find_tclk(void)
 248{
 249        return 166666667;
 250}
 251
 252void __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 ****************************************************************************/
 262static 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 ****************************************************************************/
 271static 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 ****************************************************************************/
 280static u64 sdio_dmamask = DMA_BIT_MASK(32);
 281
 282static 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
 294static 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
 305void __init dove_sdio0_init(void)
 306{
 307        platform_device_register(&dove_sdio0);
 308}
 309
 310static 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
 322static 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
 333void __init dove_sdio1_init(void)
 334{
 335        platform_device_register(&dove_sdio1);
 336}
 337
 338void __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
 378static struct resource orion_wdt_resource[] = {
 379                DEFINE_RES_MEM(TIMER_PHYS_BASE, 0x04),
 380                DEFINE_RES_MEM(RSTOUTn_MASK_PHYS, 0x04),
 381};
 382
 383static struct platform_device orion_wdt_device = {
 384        .name           = "orion_wdt",
 385        .id             = -1,
 386        .num_resources  = ARRAY_SIZE(orion_wdt_resource),
 387        .resource       = orion_wdt_resource,
 388};
 389
 390static void __init __maybe_unused orion_wdt_init(void)
 391{
 392        platform_device_register(&orion_wdt_device);
 393}
 394
 395static const struct dove_pmu_domain_initdata pmu_domains[] __initconst = {
 396        {
 397                .pwr_mask = PMU_PWR_VPU_PWR_DWN_MASK,
 398                .rst_mask = PMU_SW_RST_VIDEO_MASK,
 399                .iso_mask = PMU_ISO_VIDEO_MASK,
 400                .name = "vpu-domain",
 401        }, {
 402                .pwr_mask = PMU_PWR_GPU_PWR_DWN_MASK,
 403                .rst_mask = PMU_SW_RST_GPU_MASK,
 404                .iso_mask = PMU_ISO_GPU_MASK,
 405                .name = "gpu-domain",
 406        }, {
 407                /* sentinel */
 408        },
 409};
 410
 411static const struct dove_pmu_initdata pmu_data __initconst = {
 412        .pmc_base = DOVE_PMU_VIRT_BASE,
 413        .pmu_base = DOVE_PMU_VIRT_BASE + 0x8000,
 414        .irq = IRQ_DOVE_PMU,
 415        .irq_domain_start = IRQ_DOVE_PMU_START,
 416        .domains = pmu_domains,
 417};
 418
 419void __init dove_init(void)
 420{
 421        pr_info("Dove 88AP510 SoC, TCLK = %d MHz.\n",
 422                (dove_tclk + 499999) / 1000000);
 423
 424#ifdef CONFIG_CACHE_TAUROS2
 425        tauros2_init(0);
 426#endif
 427        dove_setup_cpu_wins();
 428
 429        /* Setup root of clk tree */
 430        dove_clk_init();
 431
 432        /* internal devices that every board has */
 433        dove_init_pmu_legacy(&pmu_data);
 434        dove_rtc_init();
 435        dove_xor0_init();
 436        dove_xor1_init();
 437}
 438
 439void dove_restart(enum reboot_mode mode, const char *cmd)
 440{
 441        /*
 442         * Enable soft reset to assert RSTOUTn.
 443         */
 444        writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);
 445
 446        /*
 447         * Assert soft reset.
 448         */
 449        writel(SOFT_RESET, SYSTEM_SOFT_RESET);
 450
 451        while (1)
 452                ;
 453}
 454