linux-kernel - [PATCH] ARM: tegra: Enable CPUIdle on Tegra20

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Date:	Thu, 23 Feb 2012 18:20:56 +0200
From:	Peter De Schrijver <pdeschrijver@...dia.com>
To:	Peter De Schrijver <pdeschrijver@...dia.com>
Cc:	Colin Cross <ccross@...roid.com>, Olof Johansson <olof@...om.net>,
	Stephen Warren <swarren@...dia.com>,
	Russell King <linux@....linux.org.uk>,
	linux-tegra@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: tegra: Enable CPUIdle on Tegra20

As the LP3 code also works for Tegra20, we can enable cpuidle for Tegra20.

Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.com>

---
Tested on Tegra2 Ventana,
/sys/devices/system/cpu/cpu[0-1]/cpuidle/state0/usage increments over time
and the system is stable.

---
 arch/arm/mach-tegra/common.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index e2a2c1f..2f86fcc 100644
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -113,8 +113,6 @@ static void __init tegra_init_cache(u32 tag_latency, u32 data_latency)
 #ifdef CONFIG_ARCH_TEGRA_2x_SOC
 void __init tegra20_init_early(void)
 {
-	disable_hlt();  /* idle WFI usage needs to be confirmed */
-
 	tegra_init_fuse();
 	tegra2_init_clocks();
 	tegra_clk_init_from_table(tegra20_clk_init_table);
-- 
1.7.7.rc0.72.g4b5ea.dirty

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