board/rockchip/evb_rk3399/evb-rk3399.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2016 Rockchip Electronics Co., Ltd
   4  */
   5
   6 #include <common.h>
   7 #include <dm.h>
   8 #include <dm/pinctrl.h>
   9 #include <dm/uclass-internal.h>
  10 #include <asm/arch-rockchip/periph.h>
  11 #include <power/regulator.h>
  12 #include <spl.h>
  13
  14 int board_init(void)
  15 {
  16         struct udevice *pinctrl, *regulator;
  17         int ret;
  18
  19         /*
  20          * The PWM do not have decicated interrupt number in dts and can
  21          * not get periph_id by pinctrl framework, so let's init them here.
  22          * The PWM2 and PWM3 are for pwm regulater.
  23          */
  24         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
  25         if (ret) {
  26                 debug("%s: Cannot find pinctrl device\n", __func__);
  27                 goto out;
  28         }
  29
  30         /* Enable pwm0 for panel backlight */
  31         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM0);
  32         if (ret) {
  33                 debug("%s PWM0 pinctrl init fail! (ret=%d)\n", __func__, ret);
  34                 goto out;
  35         }
  36
  37         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2);
  38         if (ret) {
  39                 debug("%s PWM2 pinctrl init fail!\n", __func__);
  40                 goto out;
  41         }
  42
  43         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM3);
  44         if (ret) {
  45                 debug("%s PWM3 pinctrl init fail!\n", __func__);
  46                 goto out;
  47         }
  48
  49         ret = regulators_enable_boot_on(false);
  50         if (ret)
  51                 debug("%s: Cannot enable boot on regulator\n", __func__);
  52
  53         ret = regulator_get_by_platname("vcc5v0_host", &regulator);
  54         if (ret) {
  55                 debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret);
  56                 goto out;
  57         }
  58
  59         ret = regulator_set_enable(regulator, true);
  60         if (ret) {
  61                 debug("%s vcc5v0-host-en set fail!\n", __func__);
  62                 goto out;
  63         }
  64
  65 out:
  66         return 0;
  67 }
  68
  69 void spl_board_init(void)
  70 {
  71         struct udevice *pinctrl;
  72         int ret;
  73
  74         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
  75         if (ret) {
  76                 debug("%s: Cannot find pinctrl device\n", __func__);
  77                 goto err;
  78         }
  79
  80         /* Enable debug UART */
  81         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
  82         if (ret) {
  83                 debug("%s: Failed to set up console UART\n", __func__);
  84                 goto err;
  85         }
  86
  87         preloader_console_init();
  88         return;
  89 err:
  90         printf("%s: Error %d\n", __func__, ret);
  91
  92         /* No way to report error here */
  93         hang();
  94 }