drm: adv7511: Drop dsi single lane support

JIRA: https://issues.redhat.com/browse/RHEL-53571
Upstream Status: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git (v6.12.9)

commit 6c87986
Author:     Biju Das <biju.das.jz@bp.renesas.com>
AuthorDate: Tue Nov 19 19:20:31 2024 +0000
Commit:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CommitDate: Thu Jan  9 13:33:51 2025 +0100

    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 <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>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>

Author: Jocelyn Falempe

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;