file://\\fed41-bh8f7e0\oct1158\Documents\Code\C\LuckfoxTECH\luckfox-pico\sysdrv\source\kernel\drivers\phy\rockchip\phy-rockchip-csi2-dphy.c
static int csi2_dphy_get_sensor_data_rate(struct v4l2_subdev *sd);
struct v4l2_ctrl *link_freq;
link_freq = v4l2_ctrl_find(sensor_sd->ctrl_handler, V4L2_CID_LINK_FREQ);
if (!link_freq) {
v4l2_warn(sd, "No pixel rate control in subdev\n");
return -EPIPE;
}
[ 157.629084] csi2_dphy_s_stream: sd=0xd2373d7a, on=1, dphy->is_streaming=0
[ 157.629095] rockchip-csi2-dphy0: No pixel rate control in subdev
[ 157.629104] csi2_dphy_s_stream: csi2_dphy_get_sensor_data_rate ret=-32
