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28 lines
1.0 KiB
Diff
28 lines
1.0 KiB
Diff
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From a29ca7c68f90f9e59e7bca36b52c738faf7851ad Mon Sep 17 00:00:00 2001
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From: popcornmix <popcornmix@gmail.com>
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Date: Thu, 5 Sep 2019 17:59:14 +0100
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Subject: [PATCH] v3d_gem: Kick the clock so firmware knows we are
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using firmware clock interface
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Setting the v3d clock to low value allows firmware to handle dvfs in case
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where v3d hardware is not being actively used (e.g. console use).
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Signed-off-by: popcornmix <popcornmix@gmail.com>
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---
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drivers/gpu/drm/v3d/v3d_gem.c | 4 ++++
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1 file changed, 4 insertions(+)
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--- a/drivers/gpu/drm/v3d/v3d_gem.c
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+++ b/drivers/gpu/drm/v3d/v3d_gem.c
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@@ -920,6 +920,10 @@ v3d_gem_init(struct drm_device *dev)
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mutex_init(&v3d->clk_lock);
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INIT_DELAYED_WORK(&v3d->clk_down_work, v3d_clock_down_work);
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+ /* kick the clock so firmware knows we are using firmware clock interface */
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+ v3d_clock_up_get(v3d);
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+ v3d_clock_up_put(v3d);
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+
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/* Note: We don't allocate address 0. Various bits of HW
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* treat 0 as special, such as the occlusion query counters
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* where 0 means "disabled".
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