board/rockchip/evb_rk3399/evb-rk3399.c

   1 /*
   2  * (C) Copyright 2016 Rockchip Electronics Co., Ltd
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <dm/pinctrl.h>
  10 #include <dm/uclass-internal.h>
  11 #include <asm/arch/periph.h>
  12 #include <power/regulator.h>
  13 #include <spl.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 int board_init(void)
  18 {
  19         struct udevice *pinctrl, *regulator;
  20         int ret;
  21
  22         /*
  23          * The PWM do not have decicated interrupt number in dts and can
  24          * not get periph_id by pinctrl framework, so let's init them here.
  25          * The PWM2 and PWM3 are for pwm regulater.
  26          */
  27         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
  28         if (ret) {
  29                 debug("%s: Cannot find pinctrl device\n", __func__);
  30                 goto out;
  31         }
  32
  33         /* Enable pwm0 for panel backlight */
  34         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM0);
  35         if (ret) {
  36                 debug("%s PWM0 pinctrl init fail! (ret=%d)\n", __func__, ret);
  37                 goto out;
  38         }
  39
  40         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2);
  41         if (ret) {
  42                 debug("%s PWM2 pinctrl init fail!\n", __func__);
  43                 goto out;
  44         }
  45
  46         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM3);
  47         if (ret) {
  48                 debug("%s PWM3 pinctrl init fail!\n", __func__);
  49                 goto out;
  50         }
  51
  52         ret = regulators_enable_boot_on(false);
  53         if (ret)
  54                 debug("%s: Cannot enable boot on regulator\n", __func__);
  55
  56         ret = regulator_get_by_platname("vcc5v0_host", &regulator);
  57         if (ret) {
  58                 debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret);
  59                 goto out;
  60         }
  61
  62         ret = regulator_set_enable(regulator, true);
  63         if (ret) {
  64                 debug("%s vcc5v0-host-en set fail!\n", __func__);
  65                 goto out;
  66         }
  67
  68 out:
  69         return 0;
  70 }
  71
  72 void spl_board_init(void)
  73 {
  74         struct udevice *pinctrl;
  75         int ret;
  76
  77         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
  78         if (ret) {
  79                 debug("%s: Cannot find pinctrl device\n", __func__);
  80                 goto err;
  81         }
  82
  83         /* Enable debug UART */
  84         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
  85         if (ret) {
  86                 debug("%s: Failed to set up console UART\n", __func__);
  87                 goto err;
  88         }
  89
  90         preloader_console_init();
  91         return;
  92 err:
  93         printf("%s: Error %d\n", __func__, ret);
  94
  95         /* No way to report error here */
  96         hang();
  97 }