andrius
/
arm-trusted-firmware
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Tegra194: reset power state info for CPUs 

We set deepest power state when offlining a core but that may not be
requested by non-secure sw which controls idle states. It will re-init
this info from non-secure software when the core come online.

This patch resets the power state in the non-secure world context
to allow it to start with a clean slate.

Change-Id: Iafd92cb2a49571aa6eeb9580beaaff4ba55a87dc
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2018-11-15 20:44:40 -08:00
parent 0600cf6300
commit 89121c2764
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
View File

@ -381,6 +381,10 @@ int32_t tegra_soc_pwr_domain_on_finish(const psci_power_state_t *target_state)
* will re-init this info from non-secure software when the
* core come online.
*/
actlr_elx = read_ctx_reg((get_el1_sysregs_ctx(ctx)), (CTX_ACTLR_EL1));
actlr_elx &= ~DENVER_CPU_PMSTATE_MASK;
actlr_elx |= DENVER_CPU_PMSTATE_C1;
write_ctx_reg((get_el1_sysregs_ctx(ctx)), (CTX_ACTLR_EL1), (actlr_elx));
/*
* Check if we are exiting from deep sleep and restore SE