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在为RV1106适配OV2640摄像头时遇到如下问题
media-ctl查看链路正常连接，使用示波器抓取摄像头数据发现正常工作，但无法正常抓图。
查看/proc/rkcif-dvp查询到信息如下:
Driver Version:v00.02.00
Work Mode:ping pong
Monitor Mode:idle
aclk_cif:339428572
hclk_cif:148500000
dclk_cif:339428572
pclk_cif:0
i0clk_cif:0
i1clk_cif:0
rx0clk_cif:0
rx1clk_cif:0
isp0clk_cif:0
sclk_m0_cif:24000000
sclk_m1_cif:24000000
pclk_vepu_cif:0

Media device information
------------------------
driver rkcif
model rkcif-dvp
serial
bus info
hw revision 0x0
driver version 5.10.160

Device topology

• entity 1: stream_cif_dvp_id0 (1 pad, 1 link)
  type Node subtype V4L flags 0
  device node name /dev/video0
  pad0: Sink
  <- "ov2640 0-0030":0 [ENABLED]

• entity 5: stream_cif_dvp_id1 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video1
  pad0: Sink

• entity 9: stream_cif_dvp_id2 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video2
  pad0: Sink

• entity 13: stream_cif_dvp_id3 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video3
  pad0: Sink

• entity 17: rkcif_scale_ch0 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video4
  pad0: Sink

• entity 21: rkcif_scale_ch1 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video5
  pad0: Sink

• entity 25: rkcif_scale_ch2 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video6
  pad0: Sink

• entity 29: rkcif_scale_ch3 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video7
  pad0: Sink

• entity 33: rkcif_tools_id0 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video8
  pad0: Sink

• entity 37: rkcif_tools_id1 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video9
  pad0: Sink

• entity 41: rkcif_tools_id2 (1 pad, 0 link)
  type Node subtype V4L flags 0
  device node name /dev/video10
  pad0: Sink

• entity 45: ov2640 0-0030 (1 pad, 1 link)
  type V4L2 subdev subtype Sensor flags 0
  device node name /dev/v4l-subdev0
  pad0: Source
  [fmt:UYVY8_2X8/800x600@1/30 field:none colorspace:srgb
  crop.bounds:(0,0)/1600x1200
  crop:(0,0)/1600x1200]
  -> "stream_cif_dvp_id0":0 [ENABLED]

• entity 47: rkcif-dvp-sof (0 pad, 0 link)
  type V4L2 subdev subtype Unknown flags 0
  device node name /dev/v4l-subdev1
  开机日志如下：
  [ 6.696230] : get_remote_sensor: video pad[0] is null
  [ 6.696241] : rkcif_update_sensor_info: stream[0] get remote sensor_sd failed!
  [ 6.696252] : rkcif_scale_set_fmt: req(80, 60) src out(0, 0)
  我的设备树配置如下：
  &i2c0 {
  status = "okay";
  clock-frequency = <100000>;
  pinctrl-names = "default";
  pinctrl-0 = <&i2c0m0_xfer>;

/ OV2640 摄像头节点 /
ov2640: ov2640@30 {
compatible = "ovti,ov2640"; / 与驱动匹配 /
reg = <0x30>;
clocks = <&cru CLK_VICAP_M1>;
clock-names = "xvclk";
pinctrl-names = "default";
pinctrl-0 = <&vicapm1_pins>;
assigned-clocks = <&cru CLK_VICAP_M1>;
assigned-clock-rates = <24000000>;

rockchip,camera-module-index = <0>;
rockchip,camera-module-facing = "back";

port {
cam_para_out1: endpoint {
remote-endpoint = <&cif_para_in>;
};
};
};
};

/ CIF 节点 /
&rkcif {
status = "okay";
};

/ CIF DVP 接口 /
&rkcif_dvp {
status = "okay";

port {
/ Parallel bus endpoint /
cif_para_in: endpoint {
//sensor端endpoint名
remote-endpoint = <&cam_para_out1>;
//sensor端相关配置参数
bus-width = <8>;
hsync-active = <0>;
vsync-active = <0>;
pclk-sample = <1>;
};
};
};

&rkcif_dvp_sditf {
status = "okay";
port {
/ parallel endpoint /
dvp_sditf: endpoint {
//isp 虚拟设备端port名
remote-endpoint = <&isp_in>;
//sensor端相关配置参数
bus-width = <8>;
hsync-active = <0>;
vsync-active = <0>;
pclk-sample = <1>;
};
};
};

/ ISP 节点 /
&rkisp {
status = "okay";
rockchip,grf = <&grf>;
};
&rkisp_vir0 {
status = "okay";
ports {
port@0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <0>;
isp_in: endpoint@0 {
reg = <0>;
//dvp sditf的端点名
remote-endpoint = <&dvp_sditf>;
};
};
};
};