drm: adv7511: Drop dsi single lane support

commit 79d67c4 upstream.

As per [1] and [2], ADV7535/7533 supports only 2-, 3-, or 4-lane. Drop
unsupported 1-lane.

[1] https://www.analog.com/media/en/technical-documentation/data-sheets/ADV7535.pdf
[2] https://www.analog.com/media/en/technical-documentation/data-sheets/ADV7533.pdf

Fixes: 1e4d58c ("drm/bridge: adv7533: Create a MIPI DSI device")
Reported-by: Hien Huynh <[email protected]>
Cc: [email protected]
Reviewed-by: Laurent Pinchart <[email protected]>
Reviewed-by: Adam Ford <[email protected]>
Signed-off-by: Biju Das <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Dmitry Baryshkov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: bijudas

drivers/gpu/drm/bridge/adv7511/adv7533.c

@@ -175,7 +175,7 @@ int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv)
 
 	of_property_read_u32(np, "adi,dsi-lanes", &num_lanes);
 
-	if (num_lanes < 1 || num_lanes > 4)
+	if (num_lanes < 2 || num_lanes > 4)
 		return -EINVAL;
 
 	adv->num_dsi_lanes = num_lanes;