1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * PM domain driver for Keystone2 devices
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2013 Texas Instruments, Inc.
6*4882a593Smuzhiyun * Santosh Shilimkar <santosh.shillimkar@ti.com>
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Based on Kevins work on DAVINCI SOCs
9*4882a593Smuzhiyun * Kevin Hilman <khilman@linaro.org>
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/init.h>
13*4882a593Smuzhiyun #include <linux/pm_runtime.h>
14*4882a593Smuzhiyun #include <linux/pm_clock.h>
15*4882a593Smuzhiyun #include <linux/platform_device.h>
16*4882a593Smuzhiyun #include <linux/of.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include "keystone.h"
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun static struct dev_pm_domain keystone_pm_domain = {
21*4882a593Smuzhiyun .ops = {
22*4882a593Smuzhiyun USE_PM_CLK_RUNTIME_OPS
23*4882a593Smuzhiyun USE_PLATFORM_PM_SLEEP_OPS
24*4882a593Smuzhiyun },
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun static struct pm_clk_notifier_block platform_domain_notifier = {
28*4882a593Smuzhiyun .pm_domain = &keystone_pm_domain,
29*4882a593Smuzhiyun .con_ids = { NULL },
30*4882a593Smuzhiyun };
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun static const struct of_device_id of_keystone_table[] = {
33*4882a593Smuzhiyun {.compatible = "ti,k2hk"},
34*4882a593Smuzhiyun {.compatible = "ti,k2e"},
35*4882a593Smuzhiyun {.compatible = "ti,k2l"},
36*4882a593Smuzhiyun { /* end of list */ },
37*4882a593Smuzhiyun };
38*4882a593Smuzhiyun
keystone_pm_runtime_init(void)39*4882a593Smuzhiyun int __init keystone_pm_runtime_init(void)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun struct device_node *np;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun np = of_find_matching_node(NULL, of_keystone_table);
44*4882a593Smuzhiyun if (!np)
45*4882a593Smuzhiyun return 0;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun pm_clk_add_notifier(&platform_bus_type, &platform_domain_notifier);
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun return 0;
50*4882a593Smuzhiyun }
51