imx8qxp_mek.c 3.2 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 <asm/global_data.h>
  11. #include <linux/delay.h>
  12. #include <linux/libfdt.h>
  13. #include <fsl_esdhc_imx.h>
  14. #include <fdt_support.h>
  15. #include <asm/io.h>
  16. #include <asm/gpio.h>
  17. #include <asm/arch/clock.h>
  18. #include <asm/arch/sci/sci.h>
  19. #include <asm/arch/imx8-pins.h>
  20. #include <asm/arch/snvs_security_sc.h>
  21. #include <asm/arch/iomux.h>
  22. #include <asm/arch/sys_proto.h>
  23. DECLARE_GLOBAL_DATA_PTR;
  24. #define GPIO_PAD_CTRL ((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
  25. (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  26. (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  27. (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  28. #define UART_PAD_CTRL ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  29. (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  30. (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  31. (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  32. static iomux_cfg_t uart0_pads[] = {
  33. SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  34. SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  35. };
  36. static void setup_iomux_uart(void)
  37. {
  38. imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  39. }
  40. int board_early_init_f(void)
  41. {
  42. sc_pm_clock_rate_t rate = SC_80MHZ;
  43. int ret;
  44. /* Set UART0 clock root to 80 MHz */
  45. ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  46. if (ret)
  47. return ret;
  48. setup_iomux_uart();
  49. return 0;
  50. }
  51. #if CONFIG_IS_ENABLED(DM_GPIO)
  52. static void board_gpio_init(void)
  53. {
  54. struct gpio_desc desc;
  55. int ret;
  56. ret = dm_gpio_lookup_name("gpio@1a_3", &desc);
  57. if (ret)
  58. return;
  59. ret = dm_gpio_request(&desc, "bb_per_rst_b");
  60. if (ret)
  61. return;
  62. dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
  63. dm_gpio_set_value(&desc, 0);
  64. udelay(50);
  65. dm_gpio_set_value(&desc, 1);
  66. }
  67. #else
  68. static inline void board_gpio_init(void) {}
  69. #endif
  70. #if IS_ENABLED(CONFIG_FEC_MXC)
  71. #include <miiphy.h>
  72. int board_phy_config(struct phy_device *phydev)
  73. {
  74. phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  75. phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  76. phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  77. phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  78. if (phydev->drv->config)
  79. phydev->drv->config(phydev);
  80. return 0;
  81. }
  82. #endif
  83. int checkboard(void)
  84. {
  85. puts("Board: iMX8QXP MEK\n");
  86. build_info();
  87. print_bootinfo();
  88. return 0;
  89. }
  90. int board_init(void)
  91. {
  92. board_gpio_init();
  93. #ifdef CONFIG_IMX_SNVS_SEC_SC_AUTO
  94. {
  95. int ret = snvs_security_sc_init();
  96. if (ret)
  97. return ret;
  98. }
  99. #endif
  100. return 0;
  101. }
  102. /*
  103. * Board specific reset that is system reset.
  104. */
  105. void reset_cpu(void)
  106. {
  107. /* TODO */
  108. }
  109. #ifdef CONFIG_OF_BOARD_SETUP
  110. int ft_board_setup(void *blob, struct bd_info *bd)
  111. {
  112. return 0;
  113. }
  114. #endif
  115. int board_mmc_get_env_dev(int devno)
  116. {
  117. return devno;
  118. }
  119. int board_late_init(void)
  120. {
  121. char *fdt_file;
  122. bool m4_booted;
  123. #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
  124. env_set("board_name", "MEK");
  125. env_set("board_rev", "iMX8QXP");
  126. #endif
  127. fdt_file = env_get("fdt_file");
  128. m4_booted = m4_parts_booted();
  129. if (fdt_file && !strcmp(fdt_file, "undefined")) {
  130. if (m4_booted)
  131. env_set("fdt_file", "imx8qxp-mek-rpmsg.dtb");
  132. else
  133. env_set("fdt_file", "imx8qxp-mek.dtb");
  134. }
  135. return 0;
  136. }