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