Mixer soft reset is a recommended step before reconfiguring
the mixer after power on. Mixer looses the previous state of
DMAs if soft reset. This is the recommendation from the
hardware team.
Signed-off-by: Rahul Sharma <rahul.sha...@samsung.com>
---
drivers/gpu/drm/exynos/exynos_mixer.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c
b/drivers/gpu/drm/exynos/exynos_mixer.c
index 6773b03..6f18581 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1085,6 +1085,8 @@ static void mixer_poweron(struct exynos_drm_manager *mgr)
ctx->powered = true;
mutex_unlock(&ctx->mixer_mutex);
+ mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
+
mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
mixer_win_reset(ctx);
--
1.7.9.5
--
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