imx8qxp_mek.c 3.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright 2018 NXP
  4. */
  5. #include <common.h>
  6. #include <cpu_func.h>
  7. #include <env.h>
  8. #include <errno.h>
  9. #include <init.h>
  10. #include <linux/delay.h>
  11. #include <linux/libfdt.h>
  12. #include <fsl_esdhc_imx.h>
  13. #include <fdt_support.h>
  14. #include <asm/io.h>
  15. #include <asm/gpio.h>
  16. #include <asm/arch/clock.h>
  17. #include <asm/arch/sci/sci.h>
  18. #include <asm/arch/imx8-pins.h>
  19. #include <asm/arch/snvs_security_sc.h>
  20. #include <asm/arch/iomux.h>
  21. #include <asm/arch/sys_proto.h>
  22. DECLARE_GLOBAL_DATA_PTR;
  23. #define GPIO_PAD_CTRL ((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
  24. (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  25. (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  26. (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  27. #define UART_PAD_CTRL ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  28. (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  29. (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  30. (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  31. static iomux_cfg_t uart0_pads[] = {
  32. SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  33. SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  34. };
  35. static void setup_iomux_uart(void)
  36. {
  37. imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  38. }
  39. int board_early_init_f(void)
  40. {
  41. sc_pm_clock_rate_t rate = SC_80MHZ;
  42. int ret;
  43. /* Set UART0 clock root to 80 MHz */
  44. ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  45. if (ret)
  46. return ret;
  47. setup_iomux_uart();
  48. return 0;
  49. }
  50. #if CONFIG_IS_ENABLED(DM_GPIO)
  51. static void board_gpio_init(void)
  52. {
  53. struct gpio_desc desc;
  54. int ret;
  55. ret = dm_gpio_lookup_name("gpio@1a_3", &desc);
  56. if (ret)
  57. return;
  58. ret = dm_gpio_request(&desc, "bb_per_rst_b");
  59. if (ret)
  60. return;
  61. dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
  62. dm_gpio_set_value(&desc, 0);
  63. udelay(50);
  64. dm_gpio_set_value(&desc, 1);
  65. }
  66. #else
  67. static inline void board_gpio_init(void) {}
  68. #endif
  69. #if IS_ENABLED(CONFIG_FEC_MXC)
  70. #include <miiphy.h>
  71. int board_phy_config(struct phy_device *phydev)
  72. {
  73. phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  74. phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  75. phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  76. phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  77. if (phydev->drv->config)
  78. phydev->drv->config(phydev);
  79. return 0;
  80. }
  81. #endif
  82. int checkboard(void)
  83. {
  84. puts("Board: iMX8QXP MEK\n");
  85. build_info();
  86. print_bootinfo();
  87. return 0;
  88. }
  89. int board_init(void)
  90. {
  91. board_gpio_init();
  92. #ifdef CONFIG_IMX_SNVS_SEC_SC_AUTO
  93. {
  94. int ret = snvs_security_sc_init();
  95. if (ret)
  96. return ret;
  97. }
  98. #endif
  99. return 0;
  100. }
  101. /*
  102. * Board specific reset that is system reset.
  103. */
  104. void reset_cpu(ulong addr)
  105. {
  106. /* TODO */
  107. }
  108. #ifdef CONFIG_OF_BOARD_SETUP
  109. int ft_board_setup(void *blob, struct bd_info *bd)
  110. {
  111. return 0;
  112. }
  113. #endif
  114. int board_mmc_get_env_dev(int devno)
  115. {
  116. return devno;
  117. }
  118. int board_late_init(void)
  119. {
  120. char *fdt_file;
  121. bool m4_booted;
  122. #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
  123. env_set("board_name", "MEK");
  124. env_set("board_rev", "iMX8QXP");
  125. #endif
  126. fdt_file = env_get("fdt_file");
  127. m4_booted = m4_parts_booted();
  128. if (fdt_file && !strcmp(fdt_file, "undefined")) {
  129. if (m4_booted)
  130. env_set("fdt_file", "imx8qxp-mek-rpmsg.dtb");
  131. else
  132. env_set("fdt_file", "imx8qxp-mek.dtb");
  133. }
  134. return 0;
  135. }