From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f43.google.com (mail-ej1-f43.google.com [209.85.218.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4785D22CBD9 for ; Fri, 22 Aug 2025 11:45:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.43 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755863147; cv=none; b=lnNlFSnHtbSUPzhbuddQCKaTRyAXtr1JLo9yNsXrK8qiG9Rojnx68DEmyWNNYJoJskIQzMPYBBq1iVTz0LqdlKo5MH1Tte/9iZg0yC1wxS1H5bl0ZW68sIaod/bm02S1qA2nKcF5o7PsspJNMMKtRbffx/0i05/Qz3h6T0l+hdQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755863147; c=relaxed/simple; bh=xgTcVv1+T6O/ZT0Qdiz0Je+GkcjQdQoA+CbqSo/EOtE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=T3/52dIraFnzNgk0NqnydvNV5hC0rfBtF5ADmNsDTv3gST1uoNV/tPHzrWvzbHqBb8NNyS27PfI6Xz8Pw6qFFxuubZ7jQh8J2YuJifJc0jyA56Xht785wwFI6Y6POuTQY5/wwgJ1xq/B/OKkGOgo8Bspy/XSEyhUKCAV6QvrKgw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=V0CPMuUD; arc=none smtp.client-ip=209.85.218.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="V0CPMuUD" Received: by mail-ej1-f43.google.com with SMTP id a640c23a62f3a-afcb61f6044so354265866b.0 for ; Fri, 22 Aug 2025 04:45:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1755863144; x=1756467944; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=z4OUvE+/qeMt3Ot3GYxNSoy/OyQHU/DgOy4nkkkxS3g=; b=V0CPMuUDgp5v9MIx8aOe+jHztES54FM3r5g7tS1CT1Zg6oKaLbaqPyjmBIDCjODOWj oRhX0xQnMI+zZnpVtuuATMttbUwcrWWXGFnzAMM3T7KvCtgIm/QfSsyBbE+p8vtLOoDw ONGrdkeb8doqxJ3xhUu8Sd1loTNob7qNB9XXt5VZs8WZmuF7nZuISasZCZm2Ta+IOSY+ VkUPxc0geZDOgpasstsepTRnkVKeKuZQnYWkbnJr2MjjiXEkYpXy7P4RJYQvDdugzBkR dpG5fQhSig8SA1C1nyX4io9jQVePRLLTdx1MT4fUzYPXrqTQ2aiHxckAZNaxgaAzNtvn UeNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755863144; x=1756467944; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=z4OUvE+/qeMt3Ot3GYxNSoy/OyQHU/DgOy4nkkkxS3g=; b=jyYOkR20LT830Hs+GObkiNQZ8zMsWseMxfdWbbgUfNMub49RrwCzQFqNMhN70MFma7 5qT5YfNk/Hug4cp1UaczLb1NzSTUjAHiPhpIx+GnecAldX8rn6JLovr5Ue/fgQPzLYRW UVFs9SfygccxDB0k84LZBcH1THv7uLHSd57SV9I0w0hIc51V71mIUHL70ZtWjd61+aO7 WOOtvGBpt61Xb7JJrsTXfDgacETXK8heBwpUgu+FS7GtyMl+J+o6dyYDs3xz5yCe4nQ9 9CHGidsYVQ92bcwKzivmsLhdMhHm0/QU9iHgjJD3JIsOYFP/aDVdv+BXyNw/5tuFI8Ik icsQ== X-Forwarded-Encrypted: i=1; AJvYcCXgJCkXZzOSihHoFKZtEMdTmxgSorzziVfk3l/7CHkFxSdVmzXyUP/Zw7Yidw94kkiZM8kOpZEFXSy65+NW@vger.kernel.org X-Gm-Message-State: AOJu0Yz2kT7J4zd5LMR0fM99orpo9di7fWUp1UNJ/mPsIjmzDNTpBNeD oRl8sn1rH41NLXsGYQp/scrckwlp88TQN6VSSHWQiXueCP2VvuBi+4xfaCaS0D6MsgM= X-Gm-Gg: ASbGncu9DFh8AS/kusXS85T9/DlweKVKhe9m86l7E4P4u30SExFuh2k5is/fuPWh0HK NGmG+ipej1TwlSsZNyhoRD7BmP0cmKPwMEXw0JD94AtnZ10REzOtBoz4GDRsfjmxSossGtJ3lPM BvNyObBvHarHT7Wri3PVk29FkLuPvZ8FwnwBM6htYhO8dPAuvu1HjfYp4PWFwCS2EJqRJPKnpSw XZBqaL0XmEVBosV0KnzeoHL6l+vG/gDowiiizPbR/eoRjf1AXb3ZEp47rTYq/iqzSa/YGsgOMmD C0aWtGHqo/vt4oDSS/ZxAxFZ85SxJuT/HjHLj/0A5AW34QVY03kpPVqIATd5PYA/IEhJ6Q+ttkg Vdf5XR+FiCideCjXqQuxRhMS5QZnbdull24oj+hodM0ZY X-Google-Smtp-Source: AGHT+IGP1JS6P3jPLucWErJ+X2vbBJZkNfA72X488Al6ZrxHQ3otij/kMnekLD+6J4EjuK4lppcisA== X-Received: by 2002:a17:906:4794:b0:afc:aac3:6d2 with SMTP id a640c23a62f3a-afe28fcd53fmr252056366b.2.1755863143536; Fri, 22 Aug 2025 04:45:43 -0700 (PDT) Received: from linaro.org ([2a02:2454:ff21:ef30:63f:a353:7a5a:5beb]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-afded307138sm590844266b.45.2025.08.22.04.45.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Aug 2025 04:45:43 -0700 (PDT) Date: Fri, 22 Aug 2025 13:45:38 +0200 From: Stephan Gerhold To: Dmitry Baryshkov Cc: Neil Armstrong , Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH RFC 3/3] arm64: dts: qcom: x1e78100-lenovo-thinkpad-t14s: add HDMI nodes Message-ID: References: <20250821-topic-x1e80100-hdmi-v1-0-f14ad9430e88@linaro.org> <20250821-topic-x1e80100-hdmi-v1-3-f14ad9430e88@linaro.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Fri, Aug 22, 2025 at 02:01:30PM +0300, Dmitry Baryshkov wrote: > On Thu, Aug 21, 2025 at 03:53:28PM +0200, Neil Armstrong wrote: > > The Thinkpad T14s embeds a transparent 4lanes DP->HDMI transceiver > > connected to the third QMP Combo PHY 4 lanes. > > > > Add all the data routing, disable mode switching and specify the > > QMP Combo PHY should be in DP-Only mode to route the 4 lanes to > > the underlying DP phy. > > > > Signed-off-by: Neil Armstrong > > --- > > .../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi | 44 ++++++++++++++++++++++ > > 1 file changed, 44 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi > > index 4cf61c2a34e31233b1adc93332bcabef22de3f86..5b62b8c3123633360f249e3ecdc8ea23f44e8e09 100644 > > --- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi > > +++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi > > @@ -62,6 +62,20 @@ switch-lid { > > }; > > }; > > > > + > > + hdmi-connector { > > + compatible = "hdmi-connector"; > > + type = "a"; > > + pinctrl-0 = <&hdmi_hpd_default>; > > + pinctrl-names = "default"; > [...] > > + > > + port { > > + hdmi_con: endpoint { > > + remote-endpoint = <&usb_1_ss2_qmpphy_out>; > > Please describe the transparent bridge too. It can be covered by the > simple-bridge.yaml / simple-bridge.c > I think this isn't the case here(?), but how are we going to handle devices where we don't know which bridge chip is used? I've seen at least 3 or 4 different chips already across all X1E laptops and we don't have schematics for most of them. Thanks, Stephan