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 <asm/arch-rockchip/periph.h>
  10 #include <power/regulator.h>
  11
  12 int board_init(void)
  13 {
  14         struct udevice *pinctrl, *regulator;
  15         int ret;
  16
  17         /*
  18          * The PWM do not have decicated interrupt number in dts and can
  19          * not get periph_id by pinctrl framework, so let's init them here.
  20          * The PWM2 and PWM3 are for pwm regulater.
  21          */
  22         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
  23         if (ret) {
  24                 debug("%s: Cannot find pinctrl device\n", __func__);
  25                 goto out;
  26         }
  27
  28         /* Enable pwm0 for panel backlight */
  29         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM0);
  30         if (ret) {
  31                 debug("%s PWM0 pinctrl init fail! (ret=%d)\n", __func__, ret);
  32                 goto out;
  33         }
  34
  35         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2);
  36         if (ret) {
  37                 debug("%s PWM2 pinctrl init fail!\n", __func__);
  38                 goto out;
  39         }
  40
  41         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM3);
  42         if (ret) {
  43                 debug("%s PWM3 pinctrl init fail!\n", __func__);
  44                 goto out;
  45         }
  46
  47         ret = regulators_enable_boot_on(false);
  48         if (ret)
  49                 debug("%s: Cannot enable boot on regulator\n", __func__);
  50
  51         ret = regulator_get_by_platname("vcc5v0_host", &regulator);
  52         if (ret) {
  53                 debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret);
  54                 goto out;
  55         }
  56
  57         ret = regulator_set_enable(regulator, true);
  58         if (ret) {
  59                 debug("%s vcc5v0-host-en set fail!\n", __func__);
  60                 goto out;
  61         }
  62
  63 out:
  64         return 0;
  65 }