[PATCH v5 3/9] drm/vc4: hdmi: Take into account the clock doubling flag in atomic_check

[Maxime Ripard]

Reported-by: Thomas Zimmermann <tzimmermann at suse.de>
Fixes: 63495f6b4aed ("drm/vc4: hdmi: Make sure our clock rate is within limits")
Signed-off-by: Maxime Ripard <maxime at cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 5a608ed1d75e..a88aa20beeb6 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -796,6 +796,9 @@ static int vc4_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
 		pixel_rate = mode->clock * 1000;
 	}
 
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+		pixel_rate = pixel_rate * 2;
+
 	if (pixel_rate > vc4_hdmi->variant->max_pixel_clock)
 		return -EINVAL;
 
-- 
2.28.0