linux-kernel - Re: [PATCH 06/10] arm64: dts: imx8mp-hummingboard-pulse: fix mini-hdmi dsi port reference

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Message-ID: <674127c2-edb9-4497-a76b-3e1b17d8804c@solid-run.com>
Date: Tue, 28 Oct 2025 12:14:15 +0000
From: Josua Mayer <josua@...id-run.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Neil
 Armstrong <neil.armstrong@...aro.org>, Jessica Zhang
	<jessica.zhang@....qualcomm.com>, David Airlie <airlied@...il.com>, Simona
 Vetter <simona@...ll.ch>, Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>, Dmitry Torokhov
	<dmitry.torokhov@...il.com>, Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam
	<festevam@...il.com>
CC: Jon Nettleton <jon@...id-run.com>, Mikhail Anikin
	<mikhail.anikin@...id-run.com>, Yazan Shhady <yazan.shhady@...id-run.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"imx@...ts.linux.dev" <imx@...ts.linux.dev>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 06/10] arm64: dts: imx8mp-hummingboard-pulse: fix
 mini-hdmi dsi port reference

Am 27.10.25 um 18:48 schrieb Josua Mayer:
> imx8mp.dtsi includes a default port@1 node with and empty placeholder
s/and/an
> endpoint intended for linking to a dsi bridge or panel.
> HummingBoard Pulse mini-hdmi dtsi added and linked hdmi brodge to yet
> another endpoint.
>
> This duplicate endpoint can cause dsi_attach to fail.
>
> Remove the duplicate node and link to the one defined in soc dtsi.
> Further remove the unnecessary attach-bridge property.
>
> Fixes: 2a222aa2bee9 ("arm64: dts: add description for solidrun imx8mp hummingboard variants")
> Signed-off-by Josua Mayer <josua@...id-run.com>
> ---
>  .../dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi    | 11 ++++-------
>  1 file changed, 4 insertions(+), 7 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi
> index 46916ddc05335..0e5f4607c7c1b 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-pulse-mini-hdmi.dtsi
> @@ -41,7 +41,7 @@ port@0 {
>  				reg = <0>;
>  
>  				adv7535_from_dsim: endpoint {
> -					remote-endpoint = <&dsim_to_adv7535>;
> +					remote-endpoint = <&mipi_dsi_out>;
>  				};
>  			};
>  
> @@ -71,11 +71,8 @@ &lcdif1 {
>  &mipi_dsi {
>  	samsung,esc-clock-frequency = <10000000>;
>  	status = "okay";
> +};
>  
> -	port@1 {
> -		dsim_to_adv7535: endpoint {
> -			remote-endpoint = <&adv7535_from_dsim>;
> -			attach-bridge;
> -		};
> -	};
> +&mipi_dsi_out {
> +	remote-endpoint = <&adv7535_from_dsim>;
>  };
>