kp_imx53.c 2.7 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2018
  4. * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
  5. */
  6. #include <common.h>
  7. #include <asm/io.h>
  8. #include <asm/arch/imx-regs.h>
  9. #include <asm/arch/sys_proto.h>
  10. #include <asm/arch/crm_regs.h>
  11. #include <asm/arch/clock.h>
  12. #include <asm/arch/iomux-mx53.h>
  13. #include <asm/arch/clock.h>
  14. #include <asm/gpio.h>
  15. #include <env.h>
  16. #include <power/pmic.h>
  17. #include <fsl_pmic.h>
  18. #include "kp_id_rev.h"
  19. #define BOOSTER_OFF IMX_GPIO_NR(2, 23)
  20. #define LCD_BACKLIGHT IMX_GPIO_NR(1, 1)
  21. #define KEY1 IMX_GPIO_NR(2, 26)
  22. DECLARE_GLOBAL_DATA_PTR;
  23. int dram_init(void)
  24. {
  25. u32 size;
  26. size = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
  27. gd->ram_size = size;
  28. return 0;
  29. }
  30. int dram_init_banksize(void)
  31. {
  32. gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  33. gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  34. return 0;
  35. }
  36. static int power_init(void)
  37. {
  38. struct udevice *dev;
  39. int ret;
  40. ret = pmic_get("mc34708", &dev);
  41. if (ret) {
  42. printf("%s: mc34708 not found !\n", __func__);
  43. return ret;
  44. }
  45. /* Set VDDGP to 1.110V for 800 MHz on SW1 */
  46. pmic_clrsetbits(dev, REG_SW_0, SWx_VOLT_MASK_MC34708,
  47. SWx_1_110V_MC34708);
  48. /* Set VCC as 1.30V on SW2 */
  49. pmic_clrsetbits(dev, REG_SW_1, SWx_VOLT_MASK_MC34708,
  50. SWx_1_300V_MC34708);
  51. /* Set global reset timer to 4s */
  52. pmic_clrsetbits(dev, REG_POWER_CTL2, TIMER_MASK_MC34708,
  53. TIMER_4S_MC34708);
  54. return ret;
  55. }
  56. static void setup_clocks(void)
  57. {
  58. int ret;
  59. u32 ref_clk = MXC_HCLK;
  60. /*
  61. * CPU clock set to 800MHz and DDR to 400MHz
  62. */
  63. ret = mxc_set_clock(ref_clk, 800, MXC_ARM_CLK);
  64. if (ret)
  65. printf("CPU: Switch CPU clock to 800MHZ failed\n");
  66. ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK);
  67. ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK);
  68. if (ret)
  69. printf("CPU: Switch DDR clock to 400MHz failed\n");
  70. }
  71. static void setup_ups(void)
  72. {
  73. gpio_request(BOOSTER_OFF, "BOOSTER_OFF");
  74. gpio_direction_output(BOOSTER_OFF, 0);
  75. }
  76. int board_early_init_f(void)
  77. {
  78. return 0;
  79. }
  80. /*
  81. * Do not overwrite the console
  82. * Use always serial for U-Boot console
  83. */
  84. int overwrite_console(void)
  85. {
  86. return 1;
  87. }
  88. int board_init(void)
  89. {
  90. gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
  91. return 0;
  92. }
  93. void board_disable_display(void)
  94. {
  95. gpio_request(LCD_BACKLIGHT, "LCD_BACKLIGHT");
  96. gpio_direction_output(LCD_BACKLIGHT, 0);
  97. }
  98. void board_misc_setup(void)
  99. {
  100. gpio_request(KEY1, "KEY1_GPIO");
  101. gpio_direction_input(KEY1);
  102. if (gpio_get_value(KEY1))
  103. env_set("key1", "off");
  104. else
  105. env_set("key1", "on");
  106. }
  107. int board_late_init(void)
  108. {
  109. int ret = 0;
  110. board_disable_display();
  111. setup_ups();
  112. if (!power_init())
  113. setup_clocks();
  114. ret = read_eeprom();
  115. if (ret)
  116. printf("Error %d reading EEPROM content!\n", ret);
  117. show_eeprom();
  118. read_board_id();
  119. board_misc_setup();
  120. return ret;
  121. }