Check the pixel clock for the mode in atomic_check and ensure that it is within the range supported by the bridge.
Signed-off-by: Jayesh Choudhary <[email protected]> --- drivers/gpu/drm/bridge/sii902x.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index ef7c3ab3386c..a5b7ee1e3bbe 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -517,11 +517,16 @@ static int sii902x_bridge_atomic_check(struct drm_bridge *bridge, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state) { + if (crtc_state->mode.clock < SII902X_MIN_PIXEL_CLOCK_KHZ) + return MODE_CLOCK_LOW; + + if (crtc_state->mode.clock > SII902X_MAX_PIXEL_CLOCK_KHZ) + return MODE_CLOCK_HIGH; + /* * There might be flags negotiation supported in future but * set the bus flags in atomic_check statically for now. */ - bridge_state->input_bus_cfg.flags = bridge->timings->input_bus_flags; return 0; -- 2.25.1
