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Tegra186: disable DCO operations for PSCI_CPU_OFF 

This patch disables the DCO operations when we turn OFF a
CPU. DCO operations are still ON when a CPU enters a power
down suspend state.

Change-Id: I954a800209ffcc9ab43a77f04040608cbbbd9055
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2016-02-26 11:09:21 -08:00
parent 50cd8646c5
commit 1f586a7137
1 changed files with 5 additions and 0 deletions
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5
plat/nvidia/tegra/soc/t186/plat_psci_handlers.c
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@ -139,6 +139,7 @@ int tegra_soc_pwr_domain_off(const psci_power_state_t *target_state)
{
cpu_context_t *ctx = cm_get_context(NON_SECURE);
gp_regs_t *gp_regs = get_gpregs_ctx(ctx);
int impl = (read_midr() >> MIDR_IMPL_SHIFT) & MIDR_IMPL_MASK;
assert(ctx);
assert(gp_regs);
@ -150,6 +151,10 @@ int tegra_soc_pwr_domain_off(const psci_power_state_t *target_state)
mce_command_handler(MCE_CMD_UPDATE_CSTATE_INFO, TEGRA_ARI_CLUSTER_CC7,
0, TEGRA_ARI_SYSTEM_SC7);
/* Disable Denver's DCO operations */
if (impl == DENVER_IMPL)
denver_disable_dco();
/* Turn off CPU */
return mce_command_handler(MCE_CMD_ENTER_CSTATE, TEGRA_ARI_CORE_C7,
MCE_CORE_SLEEP_TIME_INFINITE, 0);