diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0352-v3d_gem-Kick-the-clock-so-firmware-knows-we-are-usin.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0352-v3d_gem-Kick-the-clock-so-firmware-knows-we-are-usin.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0352-v3d_gem-Kick-the-clock-so-firmware-knows-we-are-usin.patch b/target/linux/bcm27xx/patches-5.4/950-0352-v3d_gem-Kick-the-clock-so-firmware-knows-we-are-usin.patch new file mode 100644 index 0000000000..1892a145fa --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0352-v3d_gem-Kick-the-clock-so-firmware-knows-we-are-usin.patch @@ -0,0 +1,27 @@ +From dfc842c139ef08e21647c43c19c2a23090b65b27 Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Thu, 5 Sep 2019 17:59:14 +0100 +Subject: [PATCH] v3d_gem: Kick the clock so firmware knows we are + using firmware clock interface + +Setting the v3d clock to low value allows firmware to handle dvfs in case +where v3d hardware is not being actively used (e.g. console use). + +Signed-off-by: popcornmix <popcornmix@gmail.com> +--- + drivers/gpu/drm/v3d/v3d_gem.c | 4 ++++ + 1 file changed, 4 insertions(+) + +--- a/drivers/gpu/drm/v3d/v3d_gem.c ++++ b/drivers/gpu/drm/v3d/v3d_gem.c +@@ -918,6 +918,10 @@ v3d_gem_init(struct drm_device *dev) + mutex_init(&v3d->clk_lock); + INIT_DELAYED_WORK(&v3d->clk_down_work, v3d_clock_down_work); + ++ /* kick the clock so firmware knows we are using firmware clock interface */ ++ v3d_clock_up_get(v3d); ++ v3d_clock_up_put(v3d); ++ + /* Note: We don't allocate address 0. Various bits of HW + * treat 0 as special, such as the occlusion query counters + * where 0 means "disabled". |