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| author | Kevin DuBois <kevindubois@google.com> | 2022-12-15 19:20:26 +0000 |
|---|---|---|
| committer | Kevin DuBois <kevindubois@google.com> | 2022-12-20 23:26:13 +0000 |
| commit | 0483baae8f0ccdb93a8345200dd1ab74f16b27e8 (patch) | |
| tree | 7b08058a0026898db0007b9936cf65379a9de159 /mali_kbase/backend | |
| parent | 8f693d381b0a1b06ab4cc768d8f2e351b211bb61 (diff) | |
| download | gpu-0483baae8f0ccdb93a8345200dd1ab74f16b27e8.tar.gz | |
mali_kbase: workaround: pause before init L2 on.
Some devices seem to get stuck when trying to turn L2 on in rare case.
As workaround, place a pause of 200us before writing L2_PWRON.
Test: build, boot
Test: stability test
Bug: 262266339
Change-Id: I6acfbb5fbe4497e4adacab01ceb6bfd90e646874
Diffstat (limited to 'mali_kbase/backend')
| -rw-r--r-- | mali_kbase/backend/gpu/mali_kbase_pm_driver.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mali_kbase/backend/gpu/mali_kbase_pm_driver.c b/mali_kbase/backend/gpu/mali_kbase_pm_driver.c index 840ca26..2ef22d9 100644 --- a/mali_kbase/backend/gpu/mali_kbase_pm_driver.c +++ b/mali_kbase/backend/gpu/mali_kbase_pm_driver.c @@ -1276,6 +1276,8 @@ static int kbase_pm_l2_update_state(struct kbase_device *kbdev) switch (backend->l2_state) { case KBASE_L2_OFF: if (kbase_pm_is_l2_desired(kbdev)) { + // Workaround: give a short pause here before starting L2 transition. + udelay(200); #if MALI_USE_CSF && defined(KBASE_PM_RUNTIME) /* Enable HW timer of IPA control before * L2 cache is powered-up. |