From 860fbde438dc88d2fedf75965963b96c9041a0d5 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Tue, 25 Feb 2020 01:40:52 +0300 Subject: cpuidle: Refactor and move out NVIDIA Tegra20 driver into drivers/cpuidle The driver's code is refactored in a way that will make it easy to support Tegra30/114/124 SoCs by this unified driver later on. The current functionality is equal to the old Tegra20 driver, only the code's structure changed a tad. This is also a proper platform driver now. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Acked-by: Daniel Lezcano Signed-off-by: Thierry Reding --- arch/arm/mach-tegra/Makefile | 3 - arch/arm/mach-tegra/cpuidle-tegra20.c | 219 ---------------------------------- arch/arm/mach-tegra/cpuidle.c | 14 +-- arch/arm/mach-tegra/cpuidle.h | 4 - 4 files changed, 2 insertions(+), 238 deletions(-) delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra20.c (limited to 'arch/arm') diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 965862608ff6..8425bb5608d5 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -12,9 +12,6 @@ obj-y += sleep-tegra20.o obj-y += sleep-tegra30.o obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pm-tegra20.o -ifeq ($(CONFIG_CPU_IDLE),y) -obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += cpuidle-tegra20.o -endif obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += pm-tegra30.o ifeq ($(CONFIG_CPU_IDLE),y) obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += cpuidle-tegra30.o diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c deleted file mode 100644 index a06a4b517fb8..000000000000 --- a/arch/arm/mach-tegra/cpuidle-tegra20.c +++ /dev/null @@ -1,219 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * CPU idle driver for Tegra CPUs - * - * Copyright (c) 2010-2012, NVIDIA Corporation. - * Copyright (c) 2011 Google, Inc. - * Author: Colin Cross - * Gary King - * - * Rework for 3.3 by Peter De Schrijver - */ - -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include -#include -#include - -#include "cpuidle.h" -#include "iomap.h" -#include "reset.h" -#include "sleep.h" - -#ifdef CONFIG_PM_SLEEP -static atomic_t abort_flag; -static atomic_t abort_barrier; -static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index); -#define TEGRA20_MAX_STATES 2 -#else -#define TEGRA20_MAX_STATES 1 -#endif - -static struct cpuidle_driver tegra_idle_driver = { - .name = "tegra_idle", - .owner = THIS_MODULE, - .states = { - ARM_CPUIDLE_WFI_STATE_PWR(600), -#ifdef CONFIG_PM_SLEEP - { - .enter = tegra20_idle_lp2_coupled, - .exit_latency = 5000, - .target_residency = 10000, - .power_usage = 0, - .flags = CPUIDLE_FLAG_COUPLED | - CPUIDLE_FLAG_TIMER_STOP, - .name = "powered-down", - .desc = "CPU power gated", - }, -#endif - }, - .state_count = TEGRA20_MAX_STATES, - .safe_state_index = 0, -}; - -#ifdef CONFIG_PM_SLEEP -#ifdef CONFIG_SMP -static void tegra20_wake_cpu1_from_reset(void) -{ - /* enable cpu clock on cpu */ - tegra_enable_cpu_clock(1); - - /* take the CPU out of reset */ - tegra_cpu_out_of_reset(1); - - /* unhalt the cpu */ - flowctrl_write_cpu_halt(1, 0); -} -#else -static inline void tegra20_wake_cpu1_from_reset(void) -{ -} -#endif - -static void tegra20_report_cpus_state(void) -{ - unsigned long cpu, lcpu, csr; - - for_each_cpu(lcpu, cpu_possible_mask) { - cpu = cpu_logical_map(lcpu); - csr = flowctrl_read_cpu_csr(cpu); - - pr_err("cpu%lu: online=%d flowctrl_csr=0x%08lx\n", - cpu, cpu_online(lcpu), csr); - } -} - -static int tegra20_wait_for_secondary_cpu_parking(void) -{ - unsigned int retries = 3; - - while (retries--) { - unsigned int delay_us = 10; - unsigned int timeout_us = 500 * 1000 / delay_us; - - /* - * The primary CPU0 core shall wait for the secondaries - * shutdown in order to power-off CPU's cluster safely. - * The timeout value depends on the current CPU frequency, - * it takes about 40-150us in average and over 1000us in - * a worst case scenario. - */ - do { - if (tegra_cpu_rail_off_ready()) - return 0; - - udelay(delay_us); - - } while (timeout_us--); - - pr_err("secondary CPU taking too long to park\n"); - - tegra20_report_cpus_state(); - } - - pr_err("timed out waiting secondaries to park\n"); - - return -ETIMEDOUT; -} - -static bool tegra20_cpu_cluster_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - bool ret; - - if (tegra20_wait_for_secondary_cpu_parking()) - return false; - - ret = !tegra_pm_enter_lp2(); - - if (cpu_online(1)) - tegra20_wake_cpu1_from_reset(); - - return ret; -} - -#ifdef CONFIG_SMP -static bool tegra20_idle_enter_lp2_cpu_1(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - cpu_suspend(dev->cpu, tegra_pm_park_secondary_cpu); - - return true; -} -#else -static inline bool tegra20_idle_enter_lp2_cpu_1(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - return true; -} -#endif - -static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - bool entered_lp2 = false; - - if (tegra_pending_sgi()) - atomic_set(&abort_flag, 1); - - cpuidle_coupled_parallel_barrier(dev, &abort_barrier); - - if (atomic_read(&abort_flag)) { - cpuidle_coupled_parallel_barrier(dev, &abort_barrier); - /* clean flag for next coming */ - atomic_set(&abort_flag, 0); - return -EINTR; - } - - local_fiq_disable(); - - tegra_pm_set_cpu_in_lp2(); - cpu_pm_enter(); - - if (dev->cpu == 0) - entered_lp2 = tegra20_cpu_cluster_power_down(dev, drv, index); - else - entered_lp2 = tegra20_idle_enter_lp2_cpu_1(dev, drv, index); - - cpu_pm_exit(); - tegra_pm_clear_cpu_in_lp2(); - - local_fiq_enable(); - - return entered_lp2 ? index : 0; -} -#endif - -/* - * Tegra20 HW appears to have a bug such that PCIe device interrupts, whether - * they are legacy IRQs or MSI, are lost when LP2 is enabled. To work around - * this, simply disable LP2 if the PCI driver and DT node are both enabled. - */ -void tegra20_cpuidle_pcie_irqs_in_use(void) -{ - pr_info_once( - "Disabling cpuidle LP2 state, since PCIe IRQs are in use\n"); - cpuidle_driver_state_disabled(&tegra_idle_driver, 1, true); -} - -int __init tegra20_cpuidle_init(void) -{ - return cpuidle_register(&tegra_idle_driver, cpu_possible_mask); -} diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c index d565c44cfc93..eee85d517783 100644 --- a/arch/arm/mach-tegra/cpuidle.c +++ b/arch/arm/mach-tegra/cpuidle.c @@ -14,6 +14,7 @@ #include #include +#include #include @@ -23,8 +24,7 @@ void __init tegra_cpuidle_init(void) { switch (tegra_get_chip_id()) { case TEGRA20: - if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)) - tegra20_cpuidle_init(); + platform_device_register_simple("tegra-cpuidle", -1, NULL, 0); break; case TEGRA30: if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC)) @@ -38,13 +38,3 @@ void __init tegra_cpuidle_init(void) break; } } - -void tegra_cpuidle_pcie_irqs_in_use(void) -{ - switch (tegra_get_chip_id()) { - case TEGRA20: - if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)) - tegra20_cpuidle_pcie_irqs_in_use(); - break; - } -} diff --git a/arch/arm/mach-tegra/cpuidle.h b/arch/arm/mach-tegra/cpuidle.h index 4e1f459f5bd8..eeb37baf18e1 100644 --- a/arch/arm/mach-tegra/cpuidle.h +++ b/arch/arm/mach-tegra/cpuidle.h @@ -7,15 +7,11 @@ #define __MACH_TEGRA_CPUIDLE_H #ifdef CONFIG_CPU_IDLE -int tegra20_cpuidle_init(void); -void tegra20_cpuidle_pcie_irqs_in_use(void); int tegra30_cpuidle_init(void); int tegra114_cpuidle_init(void); void tegra_cpuidle_init(void); -void tegra_cpuidle_pcie_irqs_in_use(void); #else static inline void tegra_cpuidle_init(void) {} -static inline void tegra_cpuidle_pcie_irqs_in_use(void) {} #endif #endif -- cgit v1.2.3 From 19461a499c9e47d38f29e1ec4f0f614197cd67f2 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Tue, 25 Feb 2020 01:40:53 +0300 Subject: cpuidle: tegra: Squash Tegra30 driver into the common driver Tegra20 and Terga30 SoCs have common C1 and CC6 idling states and thus share the same code paths, there is no point in having separate drivers for a similar hardware. This patch merely moves functionality of the old driver into the new, although the CC6 state is kept disabled for now since old driver had a rudimentary support for this state (allowing to enter into CC6 only when secondary CPUs are put offline), while new driver can provide a full-featured support. The new feature will be enabled by another patch. Acked-by: Peter De Schrijver Tested-by: Peter Geis Tested-by: Jasper Korten Tested-by: David Heidelberg Tested-by: Nicolas Chauvet Acked-by: Daniel Lezcano Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding --- arch/arm/mach-tegra/Makefile | 3 - arch/arm/mach-tegra/cpuidle-tegra30.c | 123 ---------------------------------- arch/arm/mach-tegra/cpuidle.c | 5 +- arch/arm/mach-tegra/cpuidle.h | 1 - 4 files changed, 1 insertion(+), 131 deletions(-) delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra30.c (limited to 'arch/arm') diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 8425bb5608d5..99c5f4274e5c 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -13,9 +13,6 @@ obj-y += sleep-tegra30.o obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pm-tegra20.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += pm-tegra30.o -ifeq ($(CONFIG_CPU_IDLE),y) -obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += cpuidle-tegra30.o -endif obj-$(CONFIG_SMP) += platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o diff --git a/arch/arm/mach-tegra/cpuidle-tegra30.c b/arch/arm/mach-tegra/cpuidle-tegra30.c deleted file mode 100644 index 80ae64bcdf50..000000000000 --- a/arch/arm/mach-tegra/cpuidle-tegra30.c +++ /dev/null @@ -1,123 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * CPU idle driver for Tegra CPUs - * - * Copyright (c) 2010-2012, NVIDIA Corporation. - * Copyright (c) 2011 Google, Inc. - * Author: Colin Cross - * Gary King - * - * Rework for 3.3 by Peter De Schrijver - */ - -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include - -#include "cpuidle.h" -#include "sleep.h" - -#ifdef CONFIG_PM_SLEEP -static int tegra30_idle_lp2(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index); -#endif - -static struct cpuidle_driver tegra_idle_driver = { - .name = "tegra_idle", - .owner = THIS_MODULE, -#ifdef CONFIG_PM_SLEEP - .state_count = 2, -#else - .state_count = 1, -#endif - .states = { - [0] = ARM_CPUIDLE_WFI_STATE_PWR(600), -#ifdef CONFIG_PM_SLEEP - [1] = { - .enter = tegra30_idle_lp2, - .exit_latency = 2000, - .target_residency = 2200, - .power_usage = 0, - .flags = CPUIDLE_FLAG_TIMER_STOP, - .name = "powered-down", - .desc = "CPU power gated", - }, -#endif - }, -}; - -#ifdef CONFIG_PM_SLEEP -static bool tegra30_cpu_cluster_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - /* All CPUs entering LP2 is not working. - * Don't let CPU0 enter LP2 when any secondary CPU is online. - */ - if (num_online_cpus() > 1 || !tegra_cpu_rail_off_ready()) { - cpu_do_idle(); - return false; - } - - return !tegra_pm_enter_lp2(); -} - -#ifdef CONFIG_SMP -static bool tegra30_cpu_core_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - smp_wmb(); - - cpu_suspend(0, tegra30_pm_secondary_cpu_suspend); - - return true; -} -#else -static inline bool tegra30_cpu_core_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - return true; -} -#endif - -static int tegra30_idle_lp2(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - bool entered_lp2 = false; - - local_fiq_disable(); - - tegra_pm_set_cpu_in_lp2(); - cpu_pm_enter(); - - if (dev->cpu == 0) - entered_lp2 = tegra30_cpu_cluster_power_down(dev, drv, index); - else - entered_lp2 = tegra30_cpu_core_power_down(dev, drv, index); - - cpu_pm_exit(); - tegra_pm_clear_cpu_in_lp2(); - - local_fiq_enable(); - - return (entered_lp2) ? index : 0; -} -#endif - -int __init tegra30_cpuidle_init(void) -{ - return cpuidle_register(&tegra_idle_driver, NULL); -} diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c index eee85d517783..fa0dcf3c2c45 100644 --- a/arch/arm/mach-tegra/cpuidle.c +++ b/arch/arm/mach-tegra/cpuidle.c @@ -24,11 +24,8 @@ void __init tegra_cpuidle_init(void) { switch (tegra_get_chip_id()) { case TEGRA20: - platform_device_register_simple("tegra-cpuidle", -1, NULL, 0); - break; case TEGRA30: - if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC)) - tegra30_cpuidle_init(); + platform_device_register_simple("tegra-cpuidle", -1, NULL, 0); break; case TEGRA114: case TEGRA124: diff --git a/arch/arm/mach-tegra/cpuidle.h b/arch/arm/mach-tegra/cpuidle.h index eeb37baf18e1..5423a05a69f6 100644 --- a/arch/arm/mach-tegra/cpuidle.h +++ b/arch/arm/mach-tegra/cpuidle.h @@ -7,7 +7,6 @@ #define __MACH_TEGRA_CPUIDLE_H #ifdef CONFIG_CPU_IDLE -int tegra30_cpuidle_init(void); int tegra114_cpuidle_init(void); void tegra_cpuidle_init(void); #else -- cgit v1.2.3 From 14e086baca509ef244715ad8b6c3f7bf80621e0b Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Tue, 25 Feb 2020 01:40:54 +0300 Subject: cpuidle: tegra: Squash Tegra114 driver into the common driver Tegra20/30/114/124 SoCs have common idling states, thus there is no much point in having separate drivers for a similar hardware. This patch moves Tegra114/124 arch/ drivers into the common driver without any functional changes. The CC6 state is kept disabled on Tegra114/124 because the core Tegra PM code needs some more work in order to support that state. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Acked-by: Daniel Lezcano Signed-off-by: Thierry Reding --- arch/arm/mach-tegra/Makefile | 7 --- arch/arm/mach-tegra/cpuidle-tegra114.c | 90 ---------------------------------- arch/arm/mach-tegra/cpuidle.c | 37 -------------- arch/arm/mach-tegra/cpuidle.h | 16 ------ arch/arm/mach-tegra/tegra.c | 6 ++- 5 files changed, 4 insertions(+), 152 deletions(-) delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra114.c delete mode 100644 arch/arm/mach-tegra/cpuidle.c delete mode 100644 arch/arm/mach-tegra/cpuidle.h (limited to 'arch/arm') diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 99c5f4274e5c..07572b5373b8 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -10,19 +10,12 @@ obj-y += sleep.o obj-y += tegra.o obj-y += sleep-tegra20.o obj-y += sleep-tegra30.o -obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pm-tegra20.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += pm-tegra30.o obj-$(CONFIG_SMP) += platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_ARCH_TEGRA_114_SOC) += pm-tegra30.o -ifeq ($(CONFIG_CPU_IDLE),y) -obj-$(CONFIG_ARCH_TEGRA_114_SOC) += cpuidle-tegra114.o -endif obj-$(CONFIG_ARCH_TEGRA_124_SOC) += pm-tegra30.o -ifeq ($(CONFIG_CPU_IDLE),y) -obj-$(CONFIG_ARCH_TEGRA_124_SOC) += cpuidle-tegra114.o -endif obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += board-paz00.o diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c deleted file mode 100644 index 858c30cc5dc7..000000000000 --- a/arch/arm/mach-tegra/cpuidle-tegra114.c +++ /dev/null @@ -1,90 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2013, NVIDIA Corporation. All rights reserved. - */ - -#include -#include -#include -#include -#include -#include - -#include - -#include - -#include -#include -#include -#include - -#include "cpuidle.h" -#include "sleep.h" - -#ifdef CONFIG_PM_SLEEP -#define TEGRA114_MAX_STATES 2 -#else -#define TEGRA114_MAX_STATES 1 -#endif - -#ifdef CONFIG_PM_SLEEP -static int tegra114_idle_power_down(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - local_fiq_disable(); - - tegra_pm_set_cpu_in_lp2(); - cpu_pm_enter(); - - call_firmware_op(prepare_idle, TF_PM_MODE_LP2_NOFLUSH_L2); - - /* Do suspend by ourselves if the firmware does not implement it */ - if (call_firmware_op(do_idle, 0) == -ENOSYS) - cpu_suspend(0, tegra30_pm_secondary_cpu_suspend); - - cpu_pm_exit(); - tegra_pm_clear_cpu_in_lp2(); - - local_fiq_enable(); - - return index; -} - -static void tegra114_idle_enter_s2idle(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - tegra114_idle_power_down(dev, drv, index); -} -#endif - -static struct cpuidle_driver tegra_idle_driver = { - .name = "tegra_idle", - .owner = THIS_MODULE, - .state_count = TEGRA114_MAX_STATES, - .states = { - [0] = ARM_CPUIDLE_WFI_STATE_PWR(600), -#ifdef CONFIG_PM_SLEEP - [1] = { - .enter = tegra114_idle_power_down, - .enter_s2idle = tegra114_idle_enter_s2idle, - .exit_latency = 500, - .target_residency = 1000, - .flags = CPUIDLE_FLAG_TIMER_STOP, - .power_usage = 0, - .name = "powered-down", - .desc = "CPU power gated", - }, -#endif - }, -}; - -int __init tegra114_cpuidle_init(void) -{ - if (!psci_smp_available()) - return cpuidle_register(&tegra_idle_driver, NULL); - - return 0; -} diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c deleted file mode 100644 index fa0dcf3c2c45..000000000000 --- a/arch/arm/mach-tegra/cpuidle.c +++ /dev/null @@ -1,37 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * arch/arm/mach-tegra/cpuidle.c - * - * CPU idle driver for Tegra CPUs - * - * Copyright (c) 2010-2012, NVIDIA Corporation. - * Copyright (c) 2011 Google, Inc. - * Author: Colin Cross - * Gary King - * - * Rework for 3.3 by Peter De Schrijver - */ - -#include -#include -#include - -#include - -#include "cpuidle.h" - -void __init tegra_cpuidle_init(void) -{ - switch (tegra_get_chip_id()) { - case TEGRA20: - case TEGRA30: - platform_device_register_simple("tegra-cpuidle", -1, NULL, 0); - break; - case TEGRA114: - case TEGRA124: - if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) || - IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC)) - tegra114_cpuidle_init(); - break; - } -} diff --git a/arch/arm/mach-tegra/cpuidle.h b/arch/arm/mach-tegra/cpuidle.h deleted file mode 100644 index 5423a05a69f6..000000000000 --- a/arch/arm/mach-tegra/cpuidle.h +++ /dev/null @@ -1,16 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (c) 2012, NVIDIA Corporation. All rights reserved. - */ - -#ifndef __MACH_TEGRA_CPUIDLE_H -#define __MACH_TEGRA_CPUIDLE_H - -#ifdef CONFIG_CPU_IDLE -int tegra114_cpuidle_init(void); -void tegra_cpuidle_init(void); -#else -static inline void tegra_cpuidle_init(void) {} -#endif - -#endif diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c index 00aaf495bbf7..f1ce2857a251 100644 --- a/arch/arm/mach-tegra/tegra.c +++ b/arch/arm/mach-tegra/tegra.c @@ -36,11 +36,11 @@ #include #include #include +#include #include #include "board.h" #include "common.h" -#include "cpuidle.h" #include "iomap.h" #include "pm.h" #include "reset.h" @@ -85,7 +85,6 @@ static void __init tegra_dt_init(void) static void __init tegra_dt_init_late(void) { tegra_init_suspend(); - tegra_cpuidle_init(); if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && of_machine_is_compatible("compal,paz00")) @@ -94,6 +93,9 @@ static void __init tegra_dt_init_late(void) if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && of_machine_is_compatible("nvidia,tegra20")) platform_device_register_simple("tegra20-cpufreq", -1, NULL, 0); + + if (IS_ENABLED(CONFIG_ARM_TEGRA_CPUIDLE) && !psci_smp_available()) + platform_device_register_simple("tegra-cpuidle", -1, NULL, 0); } static const char * const tegra_dt_board_compat[] = { -- cgit v1.2.3