board-dt.c 3.9 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136
  1. /*
  2. * nVidia Tegra device tree board support
  3. *
  4. * Copyright (C) 2010 Secret Lab Technologies, Ltd.
  5. * Copyright (C) 2010 Google, Inc.
  6. *
  7. * This software is licensed under the terms of the GNU General Public
  8. * License version 2, as published by the Free Software Foundation, and
  9. * may be copied, distributed, and modified under those terms.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. */
  17. #include <linux/kernel.h>
  18. #include <linux/init.h>
  19. #include <linux/platform_device.h>
  20. #include <linux/serial_8250.h>
  21. #include <linux/clk.h>
  22. #include <linux/dma-mapping.h>
  23. #include <linux/irqdomain.h>
  24. #include <linux/of.h>
  25. #include <linux/of_address.h>
  26. #include <linux/of_fdt.h>
  27. #include <linux/of_irq.h>
  28. #include <linux/of_platform.h>
  29. #include <linux/pda_power.h>
  30. #include <linux/io.h>
  31. #include <linux/i2c.h>
  32. #include <linux/i2c-tegra.h>
  33. #include <asm/mach-types.h>
  34. #include <asm/mach/arch.h>
  35. #include <asm/mach/time.h>
  36. #include <asm/setup.h>
  37. #include <mach/iomap.h>
  38. #include <mach/irqs.h>
  39. #include "board.h"
  40. #include "board-harmony.h"
  41. #include "clock.h"
  42. #include "devices.h"
  43. void harmony_pinmux_init(void);
  44. void seaboard_pinmux_init(void);
  45. void ventana_pinmux_init(void);
  46. struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
  47. OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
  48. OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
  49. OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC3_BASE, "sdhci-tegra.2", NULL),
  50. OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC4_BASE, "sdhci-tegra.3", NULL),
  51. OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C_BASE, "tegra-i2c.0", NULL),
  52. OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C2_BASE, "tegra-i2c.1", NULL),
  53. OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_I2C3_BASE, "tegra-i2c.2", NULL),
  54. OF_DEV_AUXDATA("nvidia,tegra20-i2c", TEGRA_DVC_BASE, "tegra-i2c.3", NULL),
  55. OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra-i2s.0", NULL),
  56. OF_DEV_AUXDATA("nvidia,tegra20-i2s", TEGRA_I2S1_BASE, "tegra-i2s.1", NULL),
  57. OF_DEV_AUXDATA("nvidia,tegra20-das", TEGRA_APB_MISC_DAS_BASE, "tegra-das", NULL),
  58. {}
  59. };
  60. static __initdata struct tegra_clk_init_table tegra_dt_clk_init_table[] = {
  61. /* name parent rate enabled */
  62. { "uartd", "pll_p", 216000000, true },
  63. { NULL, NULL, 0, 0},
  64. };
  65. static struct of_device_id tegra_dt_match_table[] __initdata = {
  66. { .compatible = "simple-bus", },
  67. {}
  68. };
  69. static struct of_device_id tegra_dt_gic_match[] __initdata = {
  70. { .compatible = "nvidia,tegra20-gic", },
  71. {}
  72. };
  73. static struct {
  74. char *machine;
  75. void (*init)(void);
  76. } pinmux_configs[] = {
  77. { "nvidia,harmony", harmony_pinmux_init },
  78. { "nvidia,seaboard", seaboard_pinmux_init },
  79. { "nvidia,ventana", ventana_pinmux_init },
  80. };
  81. static void __init tegra_dt_init(void)
  82. {
  83. struct device_node *node;
  84. int i;
  85. node = of_find_matching_node_by_address(NULL, tegra_dt_gic_match,
  86. TEGRA_ARM_INT_DIST_BASE);
  87. if (node)
  88. irq_domain_add_simple(node, INT_GIC_BASE);
  89. tegra_clk_init_from_table(tegra_dt_clk_init_table);
  90. /*
  91. * Finished with the static registrations now; fill in the missing
  92. * devices
  93. */
  94. of_platform_populate(NULL, tegra_dt_match_table,
  95. tegra20_auxdata_lookup, NULL);
  96. for (i = 0; i < ARRAY_SIZE(pinmux_configs); i++) {
  97. if (of_machine_is_compatible(pinmux_configs[i].machine)) {
  98. pinmux_configs[i].init();
  99. break;
  100. }
  101. }
  102. WARN(i == ARRAY_SIZE(pinmux_configs),
  103. "Unknown platform! Pinmuxing not initialized\n");
  104. }
  105. static const char * tegra_dt_board_compat[] = {
  106. "nvidia,harmony",
  107. "nvidia,seaboard",
  108. "nvidia,ventana",
  109. NULL
  110. };
  111. DT_MACHINE_START(TEGRA_DT, "nVidia Tegra (Flattened Device Tree)")
  112. .map_io = tegra_map_common_io,
  113. .init_early = tegra_init_early,
  114. .init_irq = tegra_init_irq,
  115. .timer = &tegra_timer,
  116. .init_machine = tegra_dt_init,
  117. .dt_compat = tegra_dt_board_compat,
  118. MACHINE_END