Beagleboardxm and MT9P031

[Lorenzo Salvemini]

Hi all,

I'm using Beagleboardxm with MT9P031 senosr.

I can capture the frames but looking at the buffer saved with yavta I see the maximum value is 511 instead of 4095 for a white. It seems tha only 9 bit are correctly read.

I'm using Kernel 5.0.19 and the sesor is correctly reegistered.

Inside the device tree I put the following:

&i2c2 {

clock-frequency = <100000>;

mt9p031@48 {

compatible = "aptina,mt9p031";

reg = <0x48>;

clocks = <&isp 0>;

reset-gpios = <&gpio4 2 GPIO_ACTIVE_LOW>;

vaa-supply = <&hsusb2_power>;

vdd-supply = <&vaux3>;

vdd_io-supply = <&vaux4>;

port {

mt9p031_out: endpoint {

input-clock-frequency = <21000000>;

pixel-clock-frequency = <48000000>;

remote-endpoint = <&ccdc_ep>;

};

};

};

};

&isp {

#address-cells = <1>;

#size-cells = <0>;

ports {

port@0 {

reg = <0>;

ccdc_ep: endpoint {

remote-endpoint = <&mt9p031_out>;

bus-width = <12>;

hsync-active = <1>;

vsync-active = <1>;

pclk-sample = <0>;

};

};

};

};

Here below the ouput of media-ctl-p:

Media controller API version 5.0.19

Media device information

------------------------

driver          omap3isp

model           TI OMAP3 ISP

serial          

bus info        

hw revision     0xf0

driver version  5.0.19

Device topology

- entity 1: OMAP3 ISP CCP2 (2 pads, 2 links)

            type V4L2 subdev subtype Unknown flags 0

            device node name /dev/v4l-subdev0

pad0: Sink

[fmt:SGRBG10_1X10/4096x4096 field:none colorspace:srgb]

<- "OMAP3 ISP CCP2 input":0 []

pad1: Source

[fmt:SGRBG10_1X10/4096x4096 field:none colorspace:srgb]

-> "OMAP3 ISP CCDC":0 []

- entity 4: OMAP3 ISP CCP2 input (1 pad, 1 link)

            type Node subtype V4L flags 0

            device node name /dev/video0

pad0: Source

-> "OMAP3 ISP CCP2":0 []

- entity 8: OMAP3 ISP CSI2a (2 pads, 2 links)

            type V4L2 subdev subtype Unknown flags 0

            device node name /dev/v4l-subdev1

pad0: Sink

[fmt:SGRBG10_1X10/4096x4096 field:none colorspace:srgb]

pad1: Source

[fmt:SGRBG10_1X10/4096x4096 field:none colorspace:srgb]

-> "OMAP3 ISP CSI2a output":0 []

-> "OMAP3 ISP CCDC":0 []

- entity 11: OMAP3 ISP CSI2a output (1 pad, 1 link)

             type Node subtype V4L flags 0

             device node name /dev/video1

pad0: Sink

<- "OMAP3 ISP CSI2a":1 []

- entity 15: OMAP3 ISP CCDC (3 pads, 9 links)

             type V4L2 subdev subtype Unknown flags 0

             device node name /dev/v4l-subdev2

pad0: Sink

[fmt:SGRBG12_1X12/688x486 field:none colorspace:srgb]

<- "OMAP3 ISP CCP2":1 []

<- "OMAP3 ISP CSI2a":1 []

<- "mt9p031 1-005d":0 [ENABLED]

pad1: Source

[fmt:SGRBG12_1X12/688x486 field:none colorspace:srgb

crop.bounds:(0,0)/688x486

crop:(0,0)/688x486]

-> "OMAP3 ISP CCDC output":0 [ENABLED]

-> "OMAP3 ISP resizer":0 []

pad2: Source

[fmt:SGRBG10_1X10/688x485 field:none colorspace:srgb]

-> "OMAP3 ISP preview":0 []

-> "OMAP3 ISP AEWB":0 [ENABLED,IMMUTABLE]

-> "OMAP3 ISP AF":0 [ENABLED,IMMUTABLE]

-> "OMAP3 ISP histogram":0 [ENABLED,IMMUTABLE]

- entity 19: OMAP3 ISP CCDC output (1 pad, 1 link)

             type Node subtype V4L flags 0

             device node name /dev/video2

pad0: Sink

<- "OMAP3 ISP CCDC":1 [ENABLED]

- entity 23: OMAP3 ISP preview (2 pads, 4 links)

             type V4L2 subdev subtype Unknown flags 0

             device node name /dev/v4l-subdev3

pad0: Sink

[fmt:SGRBG10_1X10/2592x1943 field:none colorspace:srgb

crop.bounds:(8,4)/2578x1935

crop:(10,4)/2574x1935]

<- "OMAP3 ISP CCDC":2 []

<- "OMAP3 ISP preview input":0 []

pad1: Source

[fmt:UYVY8_1X16/2574x1935 field:none colorspace:jpeg]

-> "OMAP3 ISP preview output":0 []

-> "OMAP3 ISP resizer":0 []

- entity 26: OMAP3 ISP preview input (1 pad, 1 link)

             type Node subtype V4L flags 0

             device node name /dev/video3

pad0: Source

-> "OMAP3 ISP preview":0 []

- entity 30: OMAP3 ISP preview output (1 pad, 1 link)

             type Node subtype V4L flags 0

             device node name /dev/video4

pad0: Sink

<- "OMAP3 ISP preview":1 []

- entity 34: OMAP3 ISP resizer (2 pads, 4 links)

             type V4L2 subdev subtype Unknown flags 0

             device node name /dev/v4l-subdev4

pad0: Sink

[fmt:UYVY8_1X16/2574x1935 field:none colorspace:jpeg

crop.bounds:(1,1)/2572x1933

crop:(1,1)/2572x1933]

<- "OMAP3 ISP CCDC":1 []

<- "OMAP3 ISP preview":1 []

<- "OMAP3 ISP resizer input":0 []

pad1: Source

[fmt:UYVY8_1X16/1024x768 field:none colorspace:jpeg]

-> "OMAP3 ISP resizer output":0 []

- entity 37: OMAP3 ISP resizer input (1 pad, 1 link)

             type Node subtype V4L flags 0

             device node name /dev/video5

pad0: Source

-> "OMAP3 ISP resizer":0 []

- entity 41: OMAP3 ISP resizer output (1 pad, 1 link)

             type Node subtype V4L flags 1

             device node name /dev/video6

pad0: Sink

<- "OMAP3 ISP resizer":1 []

- entity 45: OMAP3 ISP AEWB (1 pad, 1 link)

             type V4L2 subdev subtype Unknown flags 0

             device node name /dev/v4l-subdev5

pad0: Sink

<- "OMAP3 ISP CCDC":2 [ENABLED,IMMUTABLE]

- entity 47: OMAP3 ISP AF (1 pad, 1 link)

             type V4L2 subdev subtype Unknown flags 0

             device node name /dev/v4l-subdev6

pad0: Sink

<- "OMAP3 ISP CCDC":2 [ENABLED,IMMUTABLE]

- entity 49: OMAP3 ISP histogram (1 pad, 1 link)

             type V4L2 subdev subtype Unknown flags 0

             device node name /dev/v4l-subdev7

pad0: Sink

<- "OMAP3 ISP CCDC":2 [ENABLED,IMMUTABLE]

- entity 81: mt9p031 1-005d (1 pad, 1 link)

             type V4L2 subdev subtype Sensor flags 0

             device node name /dev/v4l-subdev8

pad0: Source

[fmt:SGRBG12_1X12/688x486 field:none colorspace:srgb

crop:(0,0)/2752x1944]

-> "OMAP3 ISP CCDC":0 [ENABLED]

Any hints or tips are very appreciated