1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Runtime PM support code for DaVinci 4 * 5 * Author: Kevin Hilman 6 * 7 * Copyright (C) 2012 Texas Instruments, Inc. 8 */ 9 #include <linux/init.h> 10 #include <linux/pm_runtime.h> 11 #include <linux/pm_clock.h> 12 #include <linux/platform_device.h> 13 #include <linux/of.h> 14 15 static struct dev_pm_domain davinci_pm_domain = { 16 .ops = { 17 USE_PM_CLK_RUNTIME_OPS 18 USE_PLATFORM_PM_SLEEP_OPS 19 }, 20 }; 21 22 static struct pm_clk_notifier_block platform_bus_notifier = { 23 .pm_domain = &davinci_pm_domain, 24 .con_ids = { "fck", "master", "slave", NULL }, 25 }; 26 27 static int __init davinci_pm_runtime_init(void) 28 { 29 if (of_have_populated_dt()) 30 return 0; 31 32 /* Use pm_clk as fallback if we're not using genpd. */ 33 pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); 34 35 return 0; 36 } 37 core_initcall(davinci_pm_runtime_init); 38