kernel panic about v4l2-ioctl.c about jetson-nano HOT 17 CLOSED

What DTB is used ? The core of 4.19 out of date and no longer used.

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when I use Armbian_5.73_Aml-s905_Debian_stretch_default_4.20.2_20190130.img.xz
the kernel is ok,but hdmi no audio output,so I use 4.19.

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What DTB is used to 4.20 ?

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now I pull your latest code and make zImage. I wish the hdmi works ok.
I down load a armbian img file that hdmi ok
I use mount the img,and use dtb and kernel config file form it

from jetson-nano.

I think the kernel panic is belong to the kernel.
I replace the kernel which makes panic with the one the hdmi is ok,and the kernel is ok,and the DTB is still the old one.so I think DTB is ok,The reson is the kernel.

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[ 22.879434] ------------[ cut here ]------------
[ 22.879443] Unknown pixelformat 0x31324d41
[ 22.879504] WARNING: CPU: 0 PID: 2935 at drivers/media/v4l2-core/v4l2-ioctl.c:1340 v4l_enum_fmt+0x1558/0x1850
[ 22.879507] Modules linked in: fuse bnep btsdio bluetooth ecdh_generic brcmfmac brcmutil cfg80211 rfkill asix usbnet meson_ir ao_cec rc_core meson_gxbb_wdt pwm_meson meson_rng rng_core adc_keys input_polldev ip_tables x_tables ipv6 realtek
[ 22.879556] CPU: 0 PID: 2935 Comm: gst-plugin-scan Not tainted 4.19.0-rc7-aml-s9xxx #7
the panic is happend when the desktop is running,when I was not install the desktop,everything is ok

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HDIM audio is still not work in 4.20.

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I think the problum is the DTB.
the kernel is ok,no panic about v4l2.

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I repeat the question. What DTB do you use in the 4.20 kernel (with which sound does not work) ? I don't need information about the 4.19 kernel and its panic.

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Send me your dtb file, I will add the necessary fixes for the sound.

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how did I send it to you?
I want to say thanks a lot.
email address?

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send pull request my branch

from jetson-nano.

Then take the DTB file from VIM1, just process it DTC and compare them. There will be a section about the sound, where you need to fix a few lines.

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yes,I got the sound code.But I think it is hard for me ,I am working on it now.

sound {
compatible = "simple-audio-card";
simple-audio-card,name = "meson-gx-audio";
assigned-clocks = < 0x0b 0x0f 0x0b 0x0d 0x0b 0x0e >;
assigned-clock-parents = < 0x00 0x00 0x00 >;
assigned-clock-rates = < 0x11940000 0x10266000 0x17700000 >;

simple-audio-card,dai-link@0 {
	format = "i2s";
	mclk-fs = < 0x100 >;
	bitclock-master = < 0x3b >;
	frame-master = < 0x3b >;

	plat {
		sound-dai = < 0x3c >;
	};

	cpu {
		sound-dai = < 0x3b >;
	};

	codec {
		sound-dai = < 0x16 >;
	};
};

};

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ok,I just burn Armbian_5.67_Aml-s9xxx_Debian_stretch_default_4.19.7_20181228.img,and I use the right dtb,and there is no kernel panic about v4l2,and hdmi audio and BT works fine.
by the way,thanks a lot.

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These days ,I just use meson-gxl-s905d-p231.dtb and kernel 4.20 on my board,and The HDMI and video is ok,so I think my board is base on p231 board,The only trouble is bluetooh,It is not wok ,can you just add bluetooth(bcm43438-bt) support for phicomm-n1 base on meson-gxl-s905d-p231.dtb?

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All device is ok now! Thanks

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