1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Qualcomm APQ8016 reset controller driver
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <common.h>
10*4882a593Smuzhiyun #include <dm.h>
11*4882a593Smuzhiyun #include <errno.h>
12*4882a593Smuzhiyun #include <sysreset.h>
13*4882a593Smuzhiyun #include <asm/io.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
16*4882a593Smuzhiyun
msm_sysreset_request(struct udevice * dev,enum sysreset_t type)17*4882a593Smuzhiyun static int msm_sysreset_request(struct udevice *dev, enum sysreset_t type)
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun phys_addr_t addr = devfdt_get_addr(dev);
20*4882a593Smuzhiyun if (!addr)
21*4882a593Smuzhiyun return -EINVAL;
22*4882a593Smuzhiyun writel(0, addr);
23*4882a593Smuzhiyun return -EINPROGRESS;
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun static struct sysreset_ops msm_sysreset_ops = {
27*4882a593Smuzhiyun .request = msm_sysreset_request,
28*4882a593Smuzhiyun };
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun static const struct udevice_id msm_sysreset_ids[] = {
31*4882a593Smuzhiyun { .compatible = "qcom,pshold" },
32*4882a593Smuzhiyun { }
33*4882a593Smuzhiyun };
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun U_BOOT_DRIVER(msm_reset) = {
36*4882a593Smuzhiyun .name = "msm_sysreset",
37*4882a593Smuzhiyun .id = UCLASS_SYSRESET,
38*4882a593Smuzhiyun .of_match = msm_sysreset_ids,
39*4882a593Smuzhiyun .ops = &msm_sysreset_ops,
40*4882a593Smuzhiyun };
41