LXR uboot/drivers/sysreset/sysreset

   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 <errno.h>
  10#include <sysreset.h>
  11#include <asm/io.h>
  12#include <asm/arch/clock.h>
  13#include <asm/arch/cru_rk3399.h>
  14#include <asm/arch/hardware.h>
  15#include <linux/err.h>
  16
  17int rk3399_sysreset_request(struct udevice *dev, enum sysreset_t type)
  18{
  19        struct rk3399_cru *cru = rockchip_get_cru();
  20
  21        if (IS_ERR(cru))
  22                return PTR_ERR(cru);
  23        switch (type) {
  24        case SYSRESET_WARM:
  25                writel(0xeca8, &cru->glb_srst_snd_value);
  26                break;
  27        case SYSRESET_COLD:
  28                writel(0xfdb9, &cru->glb_srst_fst_value);
  29                break;
  30        default:
  31                return -EPROTONOSUPPORT;
  32        }
  33
  34        return -EINPROGRESS;
  35}
  36
  37static struct sysreset_ops rk3399_sysreset = {
  38        .request        = rk3399_sysreset_request,
  39};
  40
  41U_BOOT_DRIVER(sysreset_rk3399) = {
  42        .name   = "rk3399_sysreset",
  43        .id     = UCLASS_SYSRESET,
  44        .ops    = &rk3399_sysreset,
  45};
  46