diff options
| author | Mayuresh Kulkarni <mkulkarni@nvidia.com> | 2011-01-13 18:22:43 -0800 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2011-01-14 15:28:19 -0800 |
| commit | cea5c11234ecf4692aae8cf27a4d0c8008c703a0 (patch) | |
| tree | 8bca46db3738baba4cd7f043cea76674f9109cc1 /drivers/video/tegra | |
| parent | 5be6f571ae59b681eac6f3916cd102e4765ec85c (diff) | |
video: tegra: host: disable MPE auto-power-gate
It is seen that auto-power-gate of MPE causes some issues when long run
camera stress test is run. The issue manifest itself in the form of
MPE sync-point not getting triggered from hardware and hence the caller
who is waiting on it hangs up the system.
Disabling auto-power-gate for MPE seems to resolve this issue.
Original work of Jay Cheng <jacheng@nvidia.com>
Signed-off-by: Mayuresh Kulkarni <mkulkarni@nvidia.com>
Change-Id: Iaef9f959cbc00dd715352ca637955cd2bea6f355
Diffstat (limited to 'drivers/video/tegra')
| -rw-r--r-- | drivers/video/tegra/host/nvhost_acm.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/video/tegra/host/nvhost_acm.c b/drivers/video/tegra/host/nvhost_acm.c index a4bbce2b6f1d..14b2b5a6b8c1 100644 --- a/drivers/video/tegra/host/nvhost_acm.c +++ b/drivers/video/tegra/host/nvhost_acm.c @@ -31,6 +31,7 @@ #define ACM_TIMEOUT 1*HZ #define DISABLE_3D_POWERGATING +#define DISABLE_MPE_POWERGATING void nvhost_module_busy(struct nvhost_module *mod) { @@ -156,6 +157,19 @@ int nvhost_module_init(struct nvhost_module *mod, const char *name, } #endif +#ifdef DISABLE_MPE_POWERGATING + /* + * Disable power gating for MPE as it seems to cause issues with + * camera record stress tests when run in loop. + */ + if (mod->powergate_id == TEGRA_POWERGATE_MPE) { + tegra_powergate_sequence_power_up(mod->powergate_id, + mod->clk[0]); + clk_disable(mod->clk[0]); + mod->powergate_id = -1; + } +#endif + mutex_init(&mod->lock); init_waitqueue_head(&mod->idle); INIT_DELAYED_WORK(&mod->powerdown, powerdown_handler); |