ARM: tegra: Power-gate PCIE at system init.

PCIE on tegra2 is diabled by default. Power-gate this block to
save power.

Bug 800450

Original-Change-Id: I0483d0c85a032c00005d5a3cd430c4d62a2cedc9
Reviewed-on: http://git-master/r/23683
Reviewed-by: Ching Kuang (Roger) Hsieh <rhsieh@nvidia.com>
Tested-by: Ching Kuang (Roger) Hsieh <rhsieh@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: Aleksandr Frid <afrid@nvidia.com>
Rebase-Id: Ra1c8dea494e35c69b29a265002d296dee331cee2

diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index 761d2758a8b8032b4071385586be9384d112fb24..e430c94936cb460c5532c6e56731e4e4a66609e7 100644 (file)
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -122,6 +122,7 @@ static void __init tegra_init_power(void)
 {
        tegra_powergate_power_off(TEGRA_POWERGATE_MPE);
        tegra_powergate_power_off(TEGRA_POWERGATE_3D);
+       tegra_powergate_power_off(TEGRA_POWERGATE_PCIE);
 }
 
 #ifdef CONFIG_ARCH_TEGRA_2x_SOC