v3d_gem: Kick the clock so firmware knows we are using firmware clock interface

raspberrypi inclusion
category: feature
bugzilla: 50432

--------------------------------

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: Npopcornmix <popcornmix@gmail.com>
Signed-off-by: NFang Yafen <yafen@iscas.ac.cn>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/gpu/drm/v3d/v3d_gem.c

@@ -920,6 +920,10 @@ 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".