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From: Marcin Juszkiewicz <marcin@juszkiewicz.com.pl>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Heiko Stuebner <heiko@sntech.de>
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
	Marcin Juszkiewicz <marcin@juszkiewicz.com.pl>
Subject: [PATCH 0/1] Enable HDMI Receiver on NanoPC-T6
Date: Fri,  5 Sep 2025 13:02:29 +0200	[thread overview]
Message-ID: <cover.1757068166.git.marcin@juszkiewicz.com.pl> (raw)

For quite a while I had this patch in my local tree but never made it
work. Kernel generates the following messages all the time:

fdee0000.hdmi_receiver: hdmirx_wait_signal_lock: signal not lock, tmds_clk_ratio:0
fdee0000.hdmi_receiver: hdmirx_wait_signal_lock: mu_st:0x2, scdc_st:0x0, dma_st10:0x10

"v4l2-ctrl --all" reports that HDMI In is detected, /dev/video[0-4]
exist.

I tried two signal sources:
- AMD Radeon WX2100 (via passive DisplayPort -> HDMI adapter)
- AMD Radeon RX6700XT (HDMI port)

Same situation with both - kernel messages as above on RK3588 system, no
connected monitor on host side.

Usually I used MPlayer or MPV to check v4l2 devices but here it fails
too:

$ mpv av://v4l2:/dev/video3
[ffmpeg/demuxer] video4linux2,v4l2: Not a video capture device.
[lavf] avformat_open_input() failed
Failed to recognize file format.
Exiting... (Errors when loading file)


Checked SBC schematics again and HDMIIRX_DET_L line is GPIO1_D5 like it
my patch.

What I go wrong?

Marcin Juszkiewicz (1):
  arm64: dts: rockchip: enable HDMI Receiver on NanoPC T6

 .../boot/dts/rockchip/rk3588-nanopc-t6.dtsi     | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

-- 
2.51.0



WARNING: multiple messages have this Message-ID (diff)
From: Marcin Juszkiewicz <marcin@juszkiewicz.com.pl>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Heiko Stuebner <heiko@sntech.de>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org
Subject: [PATCH 0/1] Enable HDMI Receiver on NanoPC-T6
Date: Fri,  5 Sep 2025 13:02:29 +0200	[thread overview]
Message-ID: <cover.1757068166.git.marcin@juszkiewicz.com.pl> (raw)

For quite a while I had this patch in my local tree but never made it
work. Kernel generates the following messages all the time:

fdee0000.hdmi_receiver: hdmirx_wait_signal_lock: signal not lock, tmds_clk_ratio:0
fdee0000.hdmi_receiver: hdmirx_wait_signal_lock: mu_st:0x2, scdc_st:0x0, dma_st10:0x10

"v4l2-ctrl --all" reports that HDMI In is detected, /dev/video[0-4]
exist.

I tried two signal sources:
- AMD Radeon WX2100 (via passive DisplayPort -> HDMI adapter)
- AMD Radeon RX6700XT (HDMI port)

Same situation with both - kernel messages as above on RK3588 system, no
connected monitor on host side.

Usually I used MPlayer or MPV to check v4l2 devices but here it fails
too:

$ mpv av://v4l2:/dev/video3
[ffmpeg/demuxer] video4linux2,v4l2: Not a video capture device.
[lavf] avformat_open_input() failed
Failed to recognize file format.
Exiting... (Errors when loading file)


Checked SBC schematics again and HDMIIRX_DET_L line is GPIO1_D5 like it
my patch.

What I go wrong?

Marcin Juszkiewicz (1):
  arm64: dts: rockchip: enable HDMI Receiver on NanoPC T6

 .../boot/dts/rockchip/rk3588-nanopc-t6.dtsi     | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

-- 
2.51.0


_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip

             reply	other threads:[~2025-09-05 15:41 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-05 11:02 Marcin Juszkiewicz [this message]
2025-09-05 11:02 ` [PATCH 0/1] Enable HDMI Receiver on NanoPC-T6 Marcin Juszkiewicz
2025-09-05 11:02 ` [PATCH 1/1] arm64: dts: rockchip: enable HDMI Receiver on NanoPC T6 Marcin Juszkiewicz
2025-09-05 11:02   ` Marcin Juszkiewicz
2025-09-07 17:30 ` [PATCH 0/1] Enable HDMI Receiver on NanoPC-T6 Heiko Stuebner
2025-09-07 17:30   ` Heiko Stuebner
2025-09-07 18:51 ` Dmitry Osipenko
2025-09-07 18:51   ` Dmitry Osipenko

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