From e562b86581d2ccf3faaf55b1235b4e6438cb7712 Mon Sep 17 00:00:00 2001 From: Joseph Lo Date: Tue, 26 Feb 2013 16:28:07 +0000 Subject: ARM: tegra: bring up secondary CPU for Tegra114 The secondary CPU can be brought up by toggling the power in PMC. Then the flow controller will release CPU to go by clearing the reset and clamp signal automatically. Based on the work by: Bo Yan Signed-off-by: Joseph Lo Signed-off-by: Stephen Warren --- arch/arm/mach-tegra/platsmp.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c index 601bd0c3f983..516aab28fe34 100644 --- a/arch/arm/mach-tegra/platsmp.c +++ b/arch/arm/mach-tegra/platsmp.c @@ -146,6 +146,12 @@ remove_clamps: return 0; } +static int tegra114_boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + cpu = cpu_logical_map(cpu); + return tegra_pmc_cpu_power_on(cpu); +} + static int __cpuinit tegra_boot_secondary(unsigned int cpu, struct task_struct *idle) { @@ -153,6 +159,8 @@ static int __cpuinit tegra_boot_secondary(unsigned int cpu, return tegra20_boot_secondary(cpu, idle); if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_chip_id == TEGRA30) return tegra30_boot_secondary(cpu, idle); + if (IS_ENABLED(CONFIG_ARCH_TEGRA_114_SOC) && tegra_chip_id == TEGRA114) + return tegra114_boot_secondary(cpu, idle); return -EINVAL; } -- cgit v1.2.3