[v3,10/13] cpuidle: tegra: Support CPU cluster power-down state on Tegra30
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Message ID 20190715172629.4437-11-digetx@gmail.com
State New
Headers show
Series
  • Consolidate and improve NVIDIA Tegra CPUIDLE driver(s)
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Commit Message

Dmitry Osipenko July 15, 2019, 5:26 p.m. UTC
The new CPU Idle driver has all necessary features in order to allow
the deepest idling state on Tegra30 SoC where the whole CPU cluster is
power-gated using the coupled idle state.

Note that outer_disable() now need to be invoked directly since it
produces erroneous warning message about secondary CPUs being online
because it doesn't know that secondaries are turned off at that point
by the cpuidle driver.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/mach-tegra/pm.c        | 4 ++--
 drivers/cpuidle/cpuidle-tegra.c | 1 -
 2 files changed, 2 insertions(+), 3 deletions(-)

Patch
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diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c
index 7d9ef26e52a7..1845b87a7cf3 100644
--- a/arch/arm/mach-tegra/pm.c
+++ b/arch/arm/mach-tegra/pm.c
@@ -146,8 +146,8 @@  static int tegra_sleep_cpu(unsigned long v2p)
 	 * if any of secondary CPU's is online and this is the LP2-idle
 	 * code-path only for Tegra20/30.
 	 */
-	if (trusted_foundations_registered())
-		outer_disable();
+	if (trusted_foundations_registered() && outer_cache.disable)
+		outer_cache.disable();
 
 	/*
 	 * Note that besides of setting up CPU reset vector this firmware
diff --git a/drivers/cpuidle/cpuidle-tegra.c b/drivers/cpuidle/cpuidle-tegra.c
index 2ab293343069..ea084a0aa448 100644
--- a/drivers/cpuidle/cpuidle-tegra.c
+++ b/drivers/cpuidle/cpuidle-tegra.c
@@ -324,7 +324,6 @@  static int tegra_cpuidle_probe(struct platform_device *pdev)
 		tegra_idle_driver.states[TEGRA_C7].disabled = true;
 		break;
 	case TEGRA30:
-		tegra_idle_driver.states[TEGRA_CC6].disabled = true;
 		break;
 	case TEGRA114:
 	case TEGRA124: