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/io.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 <linux/soc/dove/pmu.h>
  21#include <asm/hardware/cache-tauros2.h>
  22#include <asm/mach/arch.h>
  23#include <asm/mach/map.h>
  24#include <asm/mach/time.h>
  25#include <plat/common.h>
  26#include <plat/irq.h>
  27#include <plat/time.h>
  28#include "bridge-regs.h"
  29#include "pm.h"
  30#include "common.h"
  31
  32/* These can go away once Dove uses the mvebu-mbus DT binding */
  33#define DOVE_MBUS_PCIE0_MEM_TARGET    0x4
  34#define DOVE_MBUS_PCIE0_MEM_ATTR      0xe8
  35#define DOVE_MBUS_PCIE0_IO_TARGET     0x4
  36#define DOVE_MBUS_PCIE0_IO_ATTR       0xe0
  37#define DOVE_MBUS_PCIE1_MEM_TARGET    0x8
  38#define DOVE_MBUS_PCIE1_MEM_ATTR      0xe8
  39#define DOVE_MBUS_PCIE1_IO_TARGET     0x8
  40#define DOVE_MBUS_PCIE1_IO_ATTR       0xe0
  41#define DOVE_MBUS_CESA_TARGET         0x3
  42#define DOVE_MBUS_CESA_ATTR           0x1
  43#define DOVE_MBUS_BOOTROM_TARGET      0x1
  44#define DOVE_MBUS_BOOTROM_ATTR        0xfd
  45#define DOVE_MBUS_SCRATCHPAD_TARGET   0xd
  46#define DOVE_MBUS_SCRATCHPAD_ATTR     0x0
  47
  48/*****************************************************************************
  49 * I/O Address Mapping
  50 ****************************************************************************/
  51static struct map_desc __maybe_unused dove_io_desc[] __initdata = {
  52        {
  53                .virtual        = (unsigned long) DOVE_SB_REGS_VIRT_BASE,
  54                .pfn            = __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE),
  55                .length         = DOVE_SB_REGS_SIZE,
  56                .type           = MT_DEVICE,
  57        }, {
  58                .virtual        = (unsigned long) DOVE_NB_REGS_VIRT_BASE,
  59                .pfn            = __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE),
  60                .length         = DOVE_NB_REGS_SIZE,
  61                .type           = MT_DEVICE,
  62        },
  63};
  64
  65void __init dove_map_io(void)
  66{
  67        iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc));
  68}
  69
  70/*****************************************************************************
  71 * CLK tree
  72 ****************************************************************************/
  73static int dove_tclk;
  74
  75static DEFINE_SPINLOCK(gating_lock);
  76static struct clk *tclk;
  77
  78static struct clk __init *dove_register_gate(const char *name,
  79                                             const char *parent, u8 bit_idx)
  80{
  81        return clk_register_gate(NULL, name, parent, 0,
  82                                 (void __iomem *)CLOCK_GATING_CONTROL,
  83                                 bit_idx, 0, &gating_lock);
  84}
  85
  86static void __init dove_clk_init(void)
  87{
  88        struct clk *usb0, *usb1, *sata, *pex0, *pex1, *sdio0, *sdio1;
  89        struct clk *nand, *camera, *i2s0, *i2s1, *crypto, *ac97, *pdma;
  90        struct clk *xor0, *xor1, *ge, *gephy;
  91
  92        tclk = clk_register_fixed_rate(NULL, "tclk", NULL, 0, dove_tclk);
  93
  94        usb0 = dove_register_gate("usb0", "tclk", CLOCK_GATING_BIT_USB0);
  95        usb1 = dove_register_gate("usb1", "tclk", CLOCK_GATING_BIT_USB1);
  96        sata = dove_register_gate("sata", "tclk", CLOCK_GATING_BIT_SATA);
  97        pex0 = dove_register_gate("pex0", "tclk", CLOCK_GATING_BIT_PCIE0);
  98        pex1 = dove_register_gate("pex1", "tclk", CLOCK_GATING_BIT_PCIE1);
  99        sdio0 = dove_register_gate("sdio0", "tclk", CLOCK_GATING_BIT_SDIO0);
 100        sdio1 = dove_register_gate("sdio1", "tclk", CLOCK_GATING_BIT_SDIO1);
 101        nand = dove_register_gate("nand", "tclk", CLOCK_GATING_BIT_NAND);
 102        camera = dove_register_gate("camera", "tclk", CLOCK_GATING_BIT_CAMERA);
 103        i2s0 = dove_register_gate("i2s0", "tclk", CLOCK_GATING_BIT_I2S0);
 104        i2s1 = dove_register_gate("i2s1", "tclk", CLOCK_GATING_BIT_I2S1);
 105        crypto = dove_register_gate("crypto", "tclk", CLOCK_GATING_BIT_CRYPTO);
 106        ac97 = dove_register_gate("ac97", "tclk", CLOCK_GATING_BIT_AC97);
 107        pdma = dove_register_gate("pdma", "tclk", CLOCK_GATING_BIT_PDMA);
 108        xor0 = dove_register_gate("xor0", "tclk", CLOCK_GATING_BIT_XOR0);
 109        xor1 = dove_register_gate("xor1", "tclk", CLOCK_GATING_BIT_XOR1);
 110        gephy = dove_register_gate("gephy", "tclk", CLOCK_GATING_BIT_GIGA_PHY);
 111        ge = dove_register_gate("ge", "gephy", CLOCK_GATING_BIT_GBE);
 112
 113        orion_clkdev_add(NULL, "orion_spi.0", tclk);
 114        orion_clkdev_add(NULL, "orion_spi.1", tclk);
 115        orion_clkdev_add(NULL, "orion_wdt", tclk);
 116        orion_clkdev_add(NULL, "mv64xxx_i2c.0", tclk);
 117
 118        orion_clkdev_add(NULL, "orion-ehci.0", usb0);
 119        orion_clkdev_add(NULL, "orion-ehci.1", usb1);
 120        orion_clkdev_add(NULL, "mv643xx_eth_port.0", ge);
 121        orion_clkdev_add(NULL, "sata_mv.0", sata);
 122        orion_clkdev_add("0", "pcie", pex0);
 123        orion_clkdev_add("1", "pcie", pex1);
 124        orion_clkdev_add(NULL, "sdhci-dove.0", sdio0);
 125        orion_clkdev_add(NULL, "sdhci-dove.1", sdio1);
 126        orion_clkdev_add(NULL, "orion_nand", nand);
 127        orion_clkdev_add(NULL, "cafe1000-ccic.0", camera);
 128        orion_clkdev_add(NULL, "mvebu-audio.0", i2s0);
 129        orion_clkdev_add(NULL, "mvebu-audio.1", i2s1);
 130        orion_clkdev_add(NULL, "mv_crypto", crypto);
 131        orion_clkdev_add(NULL, "dove-ac97", ac97);
 132        orion_clkdev_add(NULL, "dove-pdma", pdma);
 133        orion_clkdev_add(NULL, MV_XOR_NAME ".0", xor0);
 134        orion_clkdev_add(NULL, MV_XOR_NAME ".1", xor1);
 135}
 136
 137/*****************************************************************************
 138 * EHCI0
 139 ****************************************************************************/
 140void __init dove_ehci0_init(void)
 141{
 142        orion_ehci_init(DOVE_USB0_PHYS_BASE, IRQ_DOVE_USB0, EHCI_PHY_NA);
 143}
 144
 145/*****************************************************************************
 146 * EHCI1
 147 ****************************************************************************/
 148void __init dove_ehci1_init(void)
 149{
 150        orion_ehci_1_init(DOVE_USB1_PHYS_BASE, IRQ_DOVE_USB1);
 151}
 152
 153/*****************************************************************************
 154 * GE00
 155 ****************************************************************************/
 156void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data)
 157{
 158        orion_ge00_init(eth_data, DOVE_GE00_PHYS_BASE,
 159                        IRQ_DOVE_GE00_SUM, IRQ_DOVE_GE00_ERR,
 160                        1600);
 161}
 162
 163/*****************************************************************************
 164 * SoC RTC
 165 ****************************************************************************/
 166static void __init dove_rtc_init(void)
 167{
 168        orion_rtc_init(DOVE_RTC_PHYS_BASE, IRQ_DOVE_RTC);
 169}
 170
 171/*****************************************************************************
 172 * SATA
 173 ****************************************************************************/
 174void __init dove_sata_init(struct mv_sata_platform_data *sata_data)
 175{
 176        orion_sata_init(sata_data, DOVE_SATA_PHYS_BASE, IRQ_DOVE_SATA);
 177
 178}
 179
 180/*****************************************************************************
 181 * UART0
 182 ****************************************************************************/
 183void __init dove_uart0_init(void)
 184{
 185        orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE,
 186                         IRQ_DOVE_UART_0, tclk);
 187}
 188
 189/*****************************************************************************
 190 * UART1
 191 ****************************************************************************/
 192void __init dove_uart1_init(void)
 193{
 194        orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE,
 195                         IRQ_DOVE_UART_1, tclk);
 196}
 197
 198/*****************************************************************************
 199 * UART2
 200 ****************************************************************************/
 201void __init dove_uart2_init(void)
 202{
 203        orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE,
 204                         IRQ_DOVE_UART_2, tclk);
 205}
 206
 207/*****************************************************************************
 208 * UART3
 209 ****************************************************************************/
 210void __init dove_uart3_init(void)
 211{
 212        orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE,
 213                         IRQ_DOVE_UART_3, tclk);
 214}
 215
 216/*****************************************************************************
 217 * SPI
 218 ****************************************************************************/
 219void __init dove_spi0_init(void)
 220{
 221        orion_spi_init(DOVE_SPI0_PHYS_BASE);
 222}
 223
 224void __init dove_spi1_init(void)
 225{
 226        orion_spi_1_init(DOVE_SPI1_PHYS_BASE);
 227}
 228
 229/*****************************************************************************
 230 * I2C
 231 ****************************************************************************/
 232void __init dove_i2c_init(void)
 233{
 234        orion_i2c_init(DOVE_I2C_PHYS_BASE, IRQ_DOVE_I2C, 10);
 235}
 236
 237/*****************************************************************************
 238 * Time handling
 239 ****************************************************************************/
 240void __init dove_init_early(void)
 241{
 242        orion_time_set_base(TIMER_VIRT_BASE);
 243        mvebu_mbus_init("marvell,dove-mbus",
 244                        BRIDGE_WINS_BASE, BRIDGE_WINS_SZ,
 245                        DOVE_MC_WINS_BASE, DOVE_MC_WINS_SZ);
 246}
 247
 248static int __init dove_find_tclk(void)
 249{
 250        return 166666667;
 251}
 252
 253void __init dove_timer_init(void)
 254{
 255        dove_tclk = dove_find_tclk();
 256        orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
 257                        IRQ_DOVE_BRIDGE, dove_tclk);
 258}
 259
 260/*****************************************************************************
 261 * XOR 0
 262 ****************************************************************************/
 263static void __init dove_xor0_init(void)
 264{
 265        orion_xor0_init(DOVE_XOR0_PHYS_BASE, DOVE_XOR0_HIGH_PHYS_BASE,
 266                        IRQ_DOVE_XOR_00, IRQ_DOVE_XOR_01);
 267}
 268
 269/*****************************************************************************
 270 * XOR 1
 271 ****************************************************************************/
 272static void __init dove_xor1_init(void)
 273{
 274        orion_xor1_init(DOVE_XOR1_PHYS_BASE, DOVE_XOR1_HIGH_PHYS_BASE,
 275                        IRQ_DOVE_XOR_10, IRQ_DOVE_XOR_11);
 276}
 277
 278/*****************************************************************************
 279 * SDIO
 280 ****************************************************************************/
 281static u64 sdio_dmamask = DMA_BIT_MASK(32);
 282
 283static struct resource dove_sdio0_resources[] = {
 284        {
 285                .start  = DOVE_SDIO0_PHYS_BASE,
 286                .end    = DOVE_SDIO0_PHYS_BASE + 0xff,
 287                .flags  = IORESOURCE_MEM,
 288        }, {
 289                .start  = IRQ_DOVE_SDIO0,
 290                .end    = IRQ_DOVE_SDIO0,
 291                .flags  = IORESOURCE_IRQ,
 292        },
 293};
 294
 295static struct platform_device dove_sdio0 = {
 296        .name           = "sdhci-dove",
 297        .id             = 0,
 298        .dev            = {
 299                .dma_mask               = &sdio_dmamask,
 300                .coherent_dma_mask      = DMA_BIT_MASK(32),
 301        },
 302        .resource       = dove_sdio0_resources,
 303        .num_resources  = ARRAY_SIZE(dove_sdio0_resources),
 304};
 305
 306void __init dove_sdio0_init(void)
 307{
 308        platform_device_register(&dove_sdio0);
 309}
 310
 311static struct resource dove_sdio1_resources[] = {
 312        {
 313                .start  = DOVE_SDIO1_PHYS_BASE,
 314                .end    = DOVE_SDIO1_PHYS_BASE + 0xff,
 315                .flags  = IORESOURCE_MEM,
 316        }, {
 317                .start  = IRQ_DOVE_SDIO1,
 318                .end    = IRQ_DOVE_SDIO1,
 319                .flags  = IORESOURCE_IRQ,
 320        },
 321};
 322
 323static struct platform_device dove_sdio1 = {
 324        .name           = "sdhci-dove",
 325        .id             = 1,
 326        .dev            = {
 327                .dma_mask               = &sdio_dmamask,
 328                .coherent_dma_mask      = DMA_BIT_MASK(32),
 329        },
 330        .resource       = dove_sdio1_resources,
 331        .num_resources  = ARRAY_SIZE(dove_sdio1_resources),
 332};
 333
 334void __init dove_sdio1_init(void)
 335{
 336        platform_device_register(&dove_sdio1);
 337}
 338
 339void __init dove_setup_cpu_wins(void)
 340{
 341        /*
 342         * The PCIe windows will no longer be statically allocated
 343         * here once Dove is migrated to the pci-mvebu driver. The
 344         * non-PCIe windows will no longer be created here once Dove
 345         * fully moves to DT.
 346         */
 347        mvebu_mbus_add_window_remap_by_id(DOVE_MBUS_PCIE0_IO_TARGET,
 348                                          DOVE_MBUS_PCIE0_IO_ATTR,
 349                                          DOVE_PCIE0_IO_PHYS_BASE,
 350                                          DOVE_PCIE0_IO_SIZE,
 351                                          DOVE_PCIE0_IO_BUS_BASE);
 352        mvebu_mbus_add_window_remap_by_id(DOVE_MBUS_PCIE1_IO_TARGET,
 353                                          DOVE_MBUS_PCIE1_IO_ATTR,
 354                                          DOVE_PCIE1_IO_PHYS_BASE,
 355                                          DOVE_PCIE1_IO_SIZE,
 356                                          DOVE_PCIE1_IO_BUS_BASE);
 357        mvebu_mbus_add_window_by_id(DOVE_MBUS_PCIE0_MEM_TARGET,
 358                                    DOVE_MBUS_PCIE0_MEM_ATTR,
 359                                    DOVE_PCIE0_MEM_PHYS_BASE,
 360                                    DOVE_PCIE0_MEM_SIZE);
 361        mvebu_mbus_add_window_by_id(DOVE_MBUS_PCIE1_MEM_TARGET,
 362                                    DOVE_MBUS_PCIE1_MEM_ATTR,
 363                                    DOVE_PCIE1_MEM_PHYS_BASE,
 364                                    DOVE_PCIE1_MEM_SIZE);
 365        mvebu_mbus_add_window_by_id(DOVE_MBUS_CESA_TARGET,
 366                                    DOVE_MBUS_CESA_ATTR,
 367                                    DOVE_CESA_PHYS_BASE,
 368                                    DOVE_CESA_SIZE);
 369        mvebu_mbus_add_window_by_id(DOVE_MBUS_BOOTROM_TARGET,
 370                                    DOVE_MBUS_BOOTROM_ATTR,
 371                                    DOVE_BOOTROM_PHYS_BASE,
 372                                    DOVE_BOOTROM_SIZE);
 373        mvebu_mbus_add_window_by_id(DOVE_MBUS_SCRATCHPAD_TARGET,
 374                                    DOVE_MBUS_SCRATCHPAD_ATTR,
 375                                    DOVE_SCRATCHPAD_PHYS_BASE,
 376                                    DOVE_SCRATCHPAD_SIZE);
 377}
 378
 379static struct resource orion_wdt_resource[] = {
 380                DEFINE_RES_MEM(TIMER_PHYS_BASE, 0x04),
 381                DEFINE_RES_MEM(RSTOUTn_MASK_PHYS, 0x04),
 382};
 383
 384static struct platform_device orion_wdt_device = {
 385        .name           = "orion_wdt",
 386        .id             = -1,
 387        .num_resources  = ARRAY_SIZE(orion_wdt_resource),
 388        .resource       = orion_wdt_resource,
 389};
 390
 391static void __init __maybe_unused orion_wdt_init(void)
 392{
 393        platform_device_register(&orion_wdt_device);
 394}
 395
 396static const struct dove_pmu_domain_initdata pmu_domains[] __initconst = {
 397        {
 398                .pwr_mask = PMU_PWR_VPU_PWR_DWN_MASK,
 399                .rst_mask = PMU_SW_RST_VIDEO_MASK,
 400                .iso_mask = PMU_ISO_VIDEO_MASK,
 401                .name = "vpu-domain",
 402        }, {
 403                .pwr_mask = PMU_PWR_GPU_PWR_DWN_MASK,
 404                .rst_mask = PMU_SW_RST_GPU_MASK,
 405                .iso_mask = PMU_ISO_GPU_MASK,
 406                .name = "gpu-domain",
 407        }, {
 408                /* sentinel */
 409        },
 410};
 411
 412static const struct dove_pmu_initdata pmu_data __initconst = {
 413        .pmc_base = DOVE_PMU_VIRT_BASE,
 414        .pmu_base = DOVE_PMU_VIRT_BASE + 0x8000,
 415        .irq = IRQ_DOVE_PMU,
 416        .irq_domain_start = IRQ_DOVE_PMU_START,
 417        .domains = pmu_domains,
 418};
 419
 420void __init dove_init(void)
 421{
 422        pr_info("Dove 88AP510 SoC, TCLK = %d MHz.\n",
 423                (dove_tclk + 499999) / 1000000);
 424
 425#ifdef CONFIG_CACHE_TAUROS2
 426        tauros2_init(0);
 427#endif
 428        dove_setup_cpu_wins();
 429
 430        /* Setup root of clk tree */
 431        dove_clk_init();
 432
 433        /* internal devices that every board has */
 434        dove_init_pmu_legacy(&pmu_data);
 435        dove_rtc_init();
 436        dove_xor0_init();
 437        dove_xor1_init();
 438}
 439
 440void dove_restart(enum reboot_mode mode, const char *cmd)
 441{
 442        /*
 443         * Enable soft reset to assert RSTOUTn.
 444         */
 445        writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);
 446
 447        /*
 448         * Assert soft reset.
 449         */
 450        writel(SOFT_RESET, SYSTEM_SOFT_RESET);
 451
 452        while (1)
 453                ;
 454}
 455