Tegra186: remove support for Quasi System power off (SC8) state
This patch removes support for the SC8 power state as the feature is no
longer required for Tegra186 projects.
Change-Id: I622a5ddcffe025b9b798801d09bbb856853befd7
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t186/plat_psci_handlers.c b/plat/nvidia/tegra/soc/t186/plat_psci_handlers.c
index 06d6cbb..3a1227a 100644
--- a/plat/nvidia/tegra/soc/t186/plat_psci_handlers.c
+++ b/plat/nvidia/tegra/soc/t186/plat_psci_handlers.c
@@ -45,9 +45,6 @@
unsigned int wake_time;
} __aligned(CACHE_WRITEBACK_GRANULE) percpu_data[PLATFORM_CORE_COUNT];
-/* System power down state */
-uint32_t tegra186_system_powerdn_state = TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_POWER_OFF;
-
int32_t tegra_soc_validate_power_state(unsigned int power_state,
psci_power_state_t *req_state)
{
@@ -362,48 +359,8 @@
__dead2 void tegra_soc_prepare_system_off(void)
{
- mce_cstate_info_t cstate_info = { 0 };
- uint32_t val;
-
- if (tegra186_system_powerdn_state == TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_POWER_OFF) {
-
- /* power off the entire system */
- mce_enter_ccplex_state(tegra186_system_powerdn_state);
-
- } else if (tegra186_system_powerdn_state == TEGRA_ARI_SYSTEM_SC8) {
-
- /* Prepare for quasi power down */
- cstate_info.cluster = TEGRA_ARI_CLUSTER_CC7;
- cstate_info.system = TEGRA_ARI_SYSTEM_SC8;
- cstate_info.system_state_force = 1;
- cstate_info.update_wake_mask = 1;
- mce_update_cstate_info(&cstate_info);
-
- /* loop until other CPUs power down */
- do {
- val = mce_command_handler(MCE_CMD_IS_SC7_ALLOWED,
- TEGRA_ARI_CORE_C7,
- MCE_CORE_SLEEP_TIME_INFINITE,
- 0);
- } while (val == 0);
-
- /* Enter quasi power down state */
- (void)mce_command_handler(MCE_CMD_ENTER_CSTATE,
- TEGRA_ARI_CORE_C7, MCE_CORE_SLEEP_TIME_INFINITE, 0);
-
- /* disable GICC */
- tegra_gic_cpuif_deactivate();
-
- /* power down core */
- prepare_cpu_pwr_dwn();
-
- /* flush L1/L2 data caches */
- dcsw_op_all(DCCISW);
-
- } else {
- ERROR("%s: unsupported power down state (%d)\n", __func__,
- tegra186_system_powerdn_state);
- }
+ /* power off the entire system */
+ mce_enter_ccplex_state(TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_POWER_OFF);
wfi();