From e687f5cae591dba4a0a968c24cbe7b6141027d93 Mon Sep 17 00:00:00 2001 From: Isaac Scott Date: Wed, 29 Oct 2025 18:03:21 +0000 Subject: [PATCH] media: imx-mipi-csis: Support active data lanes differing from maximum Call on v4l2_get_active_data_lanes() to check if the driver reports that the number of lanes actively used by the MIPI CSI transmitter differs to the maximum defined in device tree. If the number of active data lanes reported by the driver is invalid, catch and return the error. If the operation is not supported, fall back to the number of allowed data lanes. Signed-off-by: Isaac Scott Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil --- drivers/media/platform/nxp/imx-mipi-csis.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/platform/nxp/imx-mipi-csis.c b/drivers/media/platform/nxp/imx-mipi-csis.c index 1569299be4ec1..088b2945aee33 100644 --- a/drivers/media/platform/nxp/imx-mipi-csis.c +++ b/drivers/media/platform/nxp/imx-mipi-csis.c @@ -1034,6 +1034,12 @@ static int mipi_csis_s_stream(struct v4l2_subdev *sd, int enable) format = v4l2_subdev_state_get_format(state, CSIS_PAD_SINK); csis_fmt = find_csis_format(format->code); + ret = v4l2_get_active_data_lanes(csis->source.pad, csis->bus.num_data_lanes); + if (ret < 0) + goto err_unlock; + + csis->num_data_lanes = ret; + ret = mipi_csis_calculate_params(csis, csis_fmt); if (ret < 0) goto err_unlock; -- 2.47.3