AM4379: No VPFE interrupt from sensor

TLearn

Part Number: AM4379

Our project used platform AM4379, I encountered a problem when I was debugging camera sensor MT9V034,with"ISIF_FRMFMT_PROGRESSIVE" input); No VDINT interrupt generated in vpfe.

I had confirmed the timing which was MT9V034 output to AM437x vpfe, VD,HD and PCLK looked like ok. I confirmed vpfe and mt9v034 are set in the progressive scan. I am confused why it happened?

Thanks!

over 6 years ago

0 Biser Gatchev-XID over 6 years ago

TI__Guru**** 393215 points

What Linux version is this? Can you post the relevant device tree section?

0 TLearn over 6 years ago in reply to Biser Gatchev-XID

Prodigy 50 points

Thanks for the reply!

linux version :Linux am437x-evm 3.14.43

DTS:
vpfe0 {
status = "okay";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&vpfe0_pins_default>;
pinctrl-1 = <&vpfe0_pins_sleep>;

/* Camera port */
port {
vpfe0_ep: endpoint {
remote-endpoint = <&mt9v034_0>;
if_type = <2>;
bus_width = <8>;
hdpol = <0>;
vdpol = <0>;
};
};
};

mt9v034@48 {
compatible = "aptina,mt9v034";
reg = <0x48>;
port {
mt9v034_0: endpoint {
remote-endpoint = <&vpfe0_ep>;
mclk-frequency = <24000000>;
};
};
};

0 Manisha Agrawal over 6 years ago in reply to TLearn

TI__Mastermind 22386 points

If you are not getting interrupts it usually means the module is not receiving/detecting video data.

Have you verified the pinmux? Looks like you are using your own camera module. Are you using TI evm or your own board?

If you are using our gp evm then for vpfe0 the external camera connector is hooked up to i2c1.

If you have been able to probe the Pclk, Vsync and Hsync signal at the connector and they all look like what you are expecting
(i.e. pclk < 72MHZ, and both hsync and vsync toggling) then pin connectivity (i.e pinmux) would be the best guess for issue at your end.

0 TLearn over 6 years ago in reply to Manisha Agrawal

Prodigy 50 points

Thank you very much,It works,

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AM4379: No VPFE interrupt from sensor