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gpu: nvgpu: fix pmu state change for dgpu boot

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In pmu_handle_pg_elpg_msg, when processing ELPG_MSG_DISALLOW_ACK, if current
pmu state is ELPG_BOOTING and GR_POWER_GATING is not supported, make sure
nvgpu_pmu_state_change updates the state_change flag, since PMU is now fully
initialized. In particular, this fixes PMU boot for dgpu, which does not support
GR_POWER_GATING.

JIRA EVLR-1776

Change-Id: I2feb97b0fb8248e9cb7945ac3189877c21815a4a
Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1539102
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nirav Patel <nipatel@nvidia.com>
This commit is contained in:
Peter Daifuku
2017-08-15 15:42:39 -07:00
committed by mobile promotions
parent 61ef5a5874
commit 49dc335cfe
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/nvgpu/common/pmu/pmu_pg.c
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@@ -81,7 +81,7 @@ static void pmu_handle_pg_elpg_msg(struct gk20a *g, struct pmu_msg *msg,
PMU_PG_FEATURE_GR_POWER_GATING_ENABLED) {
pmu->initialized = true;
nvgpu_pmu_state_change(g, PMU_STATE_STARTED,
false);
true);
WRITE_ONCE(pmu->mscg_stat, PMU_MSCG_DISABLED);
/* make status visible */
smp_mb();