Re: IMX6 Media dev node not created

[Fabio Estevam]

Hi Ibtsam,

On Thu, Apr 5, 2018 at 11:52 AM, Ibtsam Ul-Haq
 wrote:

> That worked like a charm! Thanks a lot guys, I would have never thought of 
> that!

Excellent!

If you have a chance, please submit the the dts patch that enables the
camera to the linux-arm-kernel mailing list for review and inclusion
to the mainline kernel.

Re: IMX6 Media dev node not created

[Ibtsam Ul-Haq]

On Thu, Apr 5, 2018 at 4:36 PM, Philipp Zabel  wrote:
> Hi Ibtsam,
>
> On Thu, 2018-04-05 at 16:24 +0200, Ibtsam Ul-Haq wrote:
>> Hi Fabio,
>>
>> Thanks for your reply.
>>
>> On Thu, Apr 5, 2018 at 3:31 PM, Fabio Estevam  wrote:
>> > Hi Ibtsam,
>> >
>> > [Adding Steve and Philipp in case they can provide some suggestions]
>> >
>> > On Thu, Apr 5, 2018 at 9:30 AM, Ibtsam Ul-Haq  
>> > wrote:
>> > > Greetings everyone,
>> > >
>> > > I'm running Linux 4.14.31 on an IMX6 QuadPlus based Phytec board
>> > > (PCM-058). I have connected an mt9p031 sensor to ipu1_csi0. The
>> > > problem is that I am not seeing the /dev/media0 node.
>> >
>> > Can you share your dts?
>> >
>>
>> Certainly. The dts provided by the board manufacturer was meant to
>> work with their own kernel, I tried to modify it to work with the
>> mainline kernel.
>>
>> The sensor related nodes are:
>>
> [...]
>> mt9p031_1: cam1@5d {
>> compatible = "aptina,mt9p031";
>> reg = <0x5d>;
>> status = "okay";
> [...]
>> I intend to use two cameras simultaneously. In my current setup
>> however only one camera is physically connected.
>
> Try disabling this camera as long as it is not present, otherwise the
> imx-media driver will wait forever for it to appear before creating
> /dev/media0.
>

That worked like a charm! Thanks a lot guys, I would have never thought of that!

> regards
> Philipp


Best regards,
Ibtsam Haq

Re: IMX6 Media dev node not created

[Philipp Zabel]

Hi Ibtsam,

On Thu, 2018-04-05 at 16:24 +0200, Ibtsam Ul-Haq wrote:
> Hi Fabio,
> 
> Thanks for your reply.
> 
> On Thu, Apr 5, 2018 at 3:31 PM, Fabio Estevam  wrote:
> > Hi Ibtsam,
> > 
> > [Adding Steve and Philipp in case they can provide some suggestions]
> > 
> > On Thu, Apr 5, 2018 at 9:30 AM, Ibtsam Ul-Haq  
> > wrote:
> > > Greetings everyone,
> > > 
> > > I'm running Linux 4.14.31 on an IMX6 QuadPlus based Phytec board
> > > (PCM-058). I have connected an mt9p031 sensor to ipu1_csi0. The
> > > problem is that I am not seeing the /dev/media0 node.
> > 
> > Can you share your dts?
> > 
> 
> Certainly. The dts provided by the board manufacturer was meant to
> work with their own kernel, I tried to modify it to work with the
> mainline kernel.
> 
> The sensor related nodes are:
> 
[...]
> mt9p031_1: cam1@5d {
> compatible = "aptina,mt9p031";
> reg = <0x5d>;
> status = "okay";
[...]
> I intend to use two cameras simultaneously. In my current setup
> however only one camera is physically connected.

Try disabling this camera as long as it is not present, otherwise the
imx-media driver will wait forever for it to appear before creating
/dev/media0.

regards
Philipp

Re: IMX6 Media dev node not created

[Ibtsam Ul-Haq]

Hi Fabio,

Thanks for your reply.

On Thu, Apr 5, 2018 at 3:31 PM, Fabio Estevam  wrote:
> Hi Ibtsam,
>
> [Adding Steve and Philipp in case they can provide some suggestions]
>
> On Thu, Apr 5, 2018 at 9:30 AM, Ibtsam Ul-Haq  
> wrote:
>> Greetings everyone,
>>
>> I'm running Linux 4.14.31 on an IMX6 QuadPlus based Phytec board
>> (PCM-058). I have connected an mt9p031 sensor to ipu1_csi0. The
>> problem is that I am not seeing the /dev/media0 node.
>
> Can you share your dts?
>

Certainly. The dts provided by the board manufacturer was meant to
work with their own kernel, I tried to modify it to work with the
mainline kernel.

The sensor related nodes are:

 {
pinctrl-names = "default";
pinctrl-0 = <_i2c1>;
clock-frequency = <10>;
status = "okay";

mt9p031_0: cam0@48 {
compatible = "aptina,mt9p031";
reg = <0x48>;
status = "okay";
vdd-supply = <_cam2v8>;
vdd_io-supply = <_cam2v8>;
vaa-supply = <_cam2v8>;

clocks = <_camclk>;

port {
mt9p031_ep0: endpoint {
input-clock-frequency = <2700>;
pixel-clock-frequency = <5400>;
pclk-sample = <1>;
remote-endpoint = <_csi0_mux_from_parallel_sensor>;
};
};
};

mt9p031_1: cam1@5d {
compatible = "aptina,mt9p031";
reg = <0x5d>;
status = "okay";
vdd-supply = <_cam2v8>;
vdd_io-supply = <_cam2v8>;
vaa-supply = <_cam2v8>;

clocks = <_camclk>;

port {
mt9p031_ep1: endpoint {
input-clock-frequency = <2700>;
pixel-clock-frequency = <5400>;
bus-width = <12>;
pclk-sample = <1>;
remote-endpoint = <_csi1_mux_from_parallel_sensor>;
};
};
};
};


And the IPU related stuff:

_csi0_from_ipu1_csi0_mux {
bus-width = <8>;
data-shift = <12>; /* Lines 19:12 used */
hsync-active = <1>;
vsync-active = <1>;
};

_csi0_mux_from_parallel_sensor {
remote-endpoint = <_ep0>;
};

_csi0 {
pinctrl-names = "default";
pinctrl-0 = <
_sensor_cam0_data
_sensor_cam0_ctrl
>;
};

_csi1_from_ipu2_csi1_mux {
bus-width = <8>;
data-shift = <12>; /* Lines 19:12 used */
hsync-active = <1>;
vsync-active = <1>;
};

_csi1_mux_from_parallel_sensor {
remote-endpoint = <_ep1>;
};

_csi1 {
pinctrl-names = "default";
pinctrl-0 = <
_sensor_cam1_data
_sensor_cam1_ctrl
>;
};


>> I have already read the fix mentioned in a previous discussion:
>>
>> https://www.spinics.net/lists/linux-media/msg121965.html
>>
>> and that does not seem to be the problem in my case as I do get the
>> "ipu1_csi0_mux" registered. Running a grep on dmesg I get:
>>
>> [3.235383] imx-media: Registered subdev ipu1_vdic
>> [3.241134] imx-media: Registered subdev ipu2_vdic
>> [3.246830] imx-media: Registered subdev ipu1_ic_prp
>> [3.252115] imx-media: Registered subdev ipu1_ic_prpenc
>> [3.266991] imx-media: Registered subdev ipu1_ic_prpvf
>> [3.280228] imx-media: Registered subdev ipu2_ic_prp
>> [3.285580] imx-media: Registered subdev ipu2_ic_prpenc
>> [3.299335] imx-media: Registered subdev ipu2_ic_prpvf
>> [3.350034] imx-media: Registered subdev ipu1_csi0
>> [3.363017] imx-media: Registered subdev ipu1_csi1
>> [3.375523] imx-media: Registered subdev ipu2_csi0
>> [3.388615] imx-media: Registered subdev ipu2_csi1
>> [3.560351] imx-media: Registered subdev ipu1_csi0_mux
>> [3.566151] imx-media: Registered subdev ipu2_csi1_mux
>> [   10.525497] imx-media: Registered subdev mt9p031 0-0048
>> [   10.530816] imx-media capture-subsystem: Entity type for entity
>> mt9p031 0-0048 was not initialized!
>> [   10.569201] mt9p031 0-0048: MT9P031 detected at address 0x48
>> [   10.582895] imx-media: Registered subdev mt9p031 0-005d
>> [   10.588335] imx-media capture-subsystem: Entity type for entity
>> mt9p031 0-005d was not initialized!
>> [   10.618795] mt9p031 0-005d: MT9P031 not detected, wrong version 0xfffa
>
> Why do you have the camera in two I2C addresses: 0x48 and 0x5d?
>

I intend to use two cameras simultaneously. In my current setup
however only one camera is physically connected.


>> Also my config does appear to have the required options activated;
>> running "zcat /proc/config.gz | egrep 'VIDEO_MUX|MUX_MMIO|VIDEO_IMX'"
>> I get:
>>
>> # CONFIG_MDIO_BUS_MUX_MMIOREG is not set
>> CONFIG_VIDEO_MUX=y
>> CONFIG_VIDEO_IMX_VDOA=m
>> CONFIG_VIDEO_IMX_MEDIA=y
>> CONFIG_VIDEO_IMX_CSI=y
>> CONFIG_MUX_MMIO=y
>>
>> I would really appreciate if anyone could help me trying to find out
>> what went wrong and why the /dev/media0 node is not showing up.
>>
>> Many thanks and best regards,
>> Ibtsam Haq

Re: IMX6 Media dev node not created

[Fabio Estevam]

Hi Ibtsam,

[Adding Steve and Philipp in case they can provide some suggestions]

On Thu, Apr 5, 2018 at 9:30 AM, Ibtsam Ul-Haq  wrote:
> Greetings everyone,
>
> I'm running Linux 4.14.31 on an IMX6 QuadPlus based Phytec board
> (PCM-058). I have connected an mt9p031 sensor to ipu1_csi0. The
> problem is that I am not seeing the /dev/media0 node.

Can you share your dts?

> I have already read the fix mentioned in a previous discussion:
>
> https://www.spinics.net/lists/linux-media/msg121965.html
>
> and that does not seem to be the problem in my case as I do get the
> "ipu1_csi0_mux" registered. Running a grep on dmesg I get:
>
> [3.235383] imx-media: Registered subdev ipu1_vdic
> [3.241134] imx-media: Registered subdev ipu2_vdic
> [3.246830] imx-media: Registered subdev ipu1_ic_prp
> [3.252115] imx-media: Registered subdev ipu1_ic_prpenc
> [3.266991] imx-media: Registered subdev ipu1_ic_prpvf
> [3.280228] imx-media: Registered subdev ipu2_ic_prp
> [3.285580] imx-media: Registered subdev ipu2_ic_prpenc
> [3.299335] imx-media: Registered subdev ipu2_ic_prpvf
> [3.350034] imx-media: Registered subdev ipu1_csi0
> [3.363017] imx-media: Registered subdev ipu1_csi1
> [3.375523] imx-media: Registered subdev ipu2_csi0
> [3.388615] imx-media: Registered subdev ipu2_csi1
> [3.560351] imx-media: Registered subdev ipu1_csi0_mux
> [3.566151] imx-media: Registered subdev ipu2_csi1_mux
> [   10.525497] imx-media: Registered subdev mt9p031 0-0048
> [   10.530816] imx-media capture-subsystem: Entity type for entity
> mt9p031 0-0048 was not initialized!
> [   10.569201] mt9p031 0-0048: MT9P031 detected at address 0x48
> [   10.582895] imx-media: Registered subdev mt9p031 0-005d
> [   10.588335] imx-media capture-subsystem: Entity type for entity
> mt9p031 0-005d was not initialized!
> [   10.618795] mt9p031 0-005d: MT9P031 not detected, wrong version 0xfffa

Why do you have the camera in two I2C addresses: 0x48 and 0x5d?

> Also my config does appear to have the required options activated;
> running "zcat /proc/config.gz | egrep 'VIDEO_MUX|MUX_MMIO|VIDEO_IMX'"
> I get:
>
> # CONFIG_MDIO_BUS_MUX_MMIOREG is not set
> CONFIG_VIDEO_MUX=y
> CONFIG_VIDEO_IMX_VDOA=m
> CONFIG_VIDEO_IMX_MEDIA=y
> CONFIG_VIDEO_IMX_CSI=y
> CONFIG_MUX_MMIO=y
>
> I would really appreciate if anyone could help me trying to find out
> what went wrong and why the /dev/media0 node is not showing up.
>
> Many thanks and best regards,
> Ibtsam Haq

IMX6 Media dev node not created

[Ibtsam Ul-Haq]

Greetings everyone,

I'm running Linux 4.14.31 on an IMX6 QuadPlus based Phytec board
(PCM-058). I have connected an mt9p031 sensor to ipu1_csi0. The
problem is that I am not seeing the /dev/media0 node.

I have already read the fix mentioned in a previous discussion:

https://www.spinics.net/lists/linux-media/msg121965.html

and that does not seem to be the problem in my case as I do get the
"ipu1_csi0_mux" registered. Running a grep on dmesg I get:

[3.235383] imx-media: Registered subdev ipu1_vdic
[3.241134] imx-media: Registered subdev ipu2_vdic
[3.246830] imx-media: Registered subdev ipu1_ic_prp
[3.252115] imx-media: Registered subdev ipu1_ic_prpenc
[3.266991] imx-media: Registered subdev ipu1_ic_prpvf
[3.280228] imx-media: Registered subdev ipu2_ic_prp
[3.285580] imx-media: Registered subdev ipu2_ic_prpenc
[3.299335] imx-media: Registered subdev ipu2_ic_prpvf
[3.350034] imx-media: Registered subdev ipu1_csi0
[3.363017] imx-media: Registered subdev ipu1_csi1
[3.375523] imx-media: Registered subdev ipu2_csi0
[3.388615] imx-media: Registered subdev ipu2_csi1
[3.560351] imx-media: Registered subdev ipu1_csi0_mux
[3.566151] imx-media: Registered subdev ipu2_csi1_mux
[   10.525497] imx-media: Registered subdev mt9p031 0-0048
[   10.530816] imx-media capture-subsystem: Entity type for entity
mt9p031 0-0048 was not initialized!
[   10.569201] mt9p031 0-0048: MT9P031 detected at address 0x48
[   10.582895] imx-media: Registered subdev mt9p031 0-005d
[   10.588335] imx-media capture-subsystem: Entity type for entity
mt9p031 0-005d was not initialized!
[   10.618795] mt9p031 0-005d: MT9P031 not detected, wrong version 0xfffa

Also my config does appear to have the required options activated;
running "zcat /proc/config.gz | egrep 'VIDEO_MUX|MUX_MMIO|VIDEO_IMX'"
I get:

# CONFIG_MDIO_BUS_MUX_MMIOREG is not set
CONFIG_VIDEO_MUX=y
CONFIG_VIDEO_IMX_VDOA=m
CONFIG_VIDEO_IMX_MEDIA=y
CONFIG_VIDEO_IMX_CSI=y
CONFIG_MUX_MMIO=y

I would really appreciate if anyone could help me trying to find out
what went wrong and why the /dev/media0 node is not showing up.

Many thanks and best regards,
Ibtsam Haq