From 3a0b1dae5b9b853559b87a2332a27d1ed6a91fb8 Mon Sep 17 00:00:00 2001 From: Akshay Saraswat Date: Mon, 25 Feb 2013 01:13:06 +0000 Subject: Exynos5: TMU: Add hardware tripping This adds hardware tripping at 110 degrees celsius which must enable forced system shutdown in case TMU fails to power off. Signed-off-by: Akshay Saraswat Acked-by: Simon Glass Signed-off-by: Minkyu Kang --- arch/arm/cpu/armv7/exynos/power.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch/arm/cpu') diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c index db7249ef7f..6375a81fd4 100644 --- a/arch/arm/cpu/armv7/exynos/power.c +++ b/arch/arm/cpu/armv7/exynos/power.c @@ -128,3 +128,15 @@ void set_xclkout(void) if (cpu_is_exynos5()) exynos5_set_xclkout(); } + +/* Enables hardware tripping to power off the system when TMU fails */ +void set_hw_thermal_trip(void) +{ + if (cpu_is_exynos5()) { + struct exynos5_power *power = + (struct exynos5_power *)samsung_get_base_power(); + + /* PS_HOLD_CONTROL register ENABLE_HW_TRIP bit*/ + setbits_le32(&power->ps_hold_control, POWER_ENABLE_HW_TRIP); + } +} -- cgit