drm: adv7511: Drop dsi single lane support

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: 1e4d58cd7f88 ("drm/bridge: adv7533: Create a MIPI DSI device")
Reported-by: Hien Huynh <hien.huynh.px@renesas.com>
Cc: stable@vger.kernel.org
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241119192040.152657-4-biju.das.jz@bp.renesas.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c
index 5f195e91b3e6d25325ca061acb14a3ce575e6e1c..122ad91e8a3293de1839cad061cd858d8046b675 100644 (file)
--- a/drivers/gpu/drm/bridge/adv7511/adv7533.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c
@@ -172,7 +172,7 @@ 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;