From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 786F2246BCD; Sat, 12 Sep 2026 09:51:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789206691; cv=none; b=DpqmgDdQJvMZ198yjpjruooYXJfsHMCK+Oo/5ze9+Cn8Ie0R/mdsHXbDlXgPTx6YSR2SJsFkJJNEAooqX/kkkaXNbC9FLUOkYkRzVFmvFpu0VRug0Zr0TTZ6Wc2p96HuDFQyDzoSBVnabO0HDnH0eAwZnqnmbNCCWOd3dbUZHwY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789206691; c=relaxed/simple; bh=RzQze1ZLg6zh30kBOlXzswWmRNkuCBH/89KQf1X0Fpc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=cm2to+7Y9PTiHEQkKpg9LvHC9mOe7NFet4OG8Y5eetEJMgVvjpyuupsQPFiqrgVjB3V61mptQgKFv2kXMZ6a6/dPwASyX4g7l+Wt5cRYLVc54707rygv7zPqFqQCzRYKikHEpewF+kysIKfZJ32f/dAO3Q0mLjbZtezEw87t77g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=0POCRZCG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="0POCRZCG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7D3EB1F000FF; Sat, 12 Sep 2026 09:51:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789206690; bh=HrJevnDkkWR+CxXudZhe8Bxgdlg+xrsAJAhrIueySR4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=0POCRZCGBueYJizNn+O0DX0zleN+kShTzdsDNqqyWcYDyMELNrJhmiItzggTG8IM7 NH0byWjr2RRACSbetjMMK4W24aXFFzS1OdCOr0EqKnSvQb0gzOFyb52UFFVLrnBDhX N+vFGRfwwKhegKhp/rWZ5uEuMeBp6VDjD7z1hIS8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jens Glathe , Konrad Dybcio , =?UTF-8?q?J=C3=A9r=C3=B4me=20de=20Bretagne?= , Bjorn Andersson , Sasha Levin Subject: [PATCH 6.18 0258/1518] arm64: dts: qcom: sc8280xp-arcata: Fix top USB-C DP alt mode Date: Sat, 12 Sep 2026 08:40:27 +0200 Message-ID: <20260912065629.319433055@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065623.398859879@linuxfoundation.org> References: <20260912065623.398859879@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jérôme de Bretagne [ Upstream commit 16065c4ec1e7ca595f4fa363dc2251c6bdf1f6b3 ] The top USB-C port (usb0) didn't switch to DP alt mode, as reusing the same GPIO 101 as on the SC8280XP CRD or Lenovo ThinkPad X13s was not working on the Surface Pro 9 5G. Investigation [1] by Jens on the Windows Dev Kit (WDK2023), the other sc8280xp-based "blackrock" model from Microsoft, found a reference to GPIO 100 in the DSDT in addition to 101. Switching to GPIO 100 fixed the issue on blackrock, as it does on arcata to enable external screen when using the left-side top USB-C port. [1] https://lore.kernel.org/all/20250609-blackrock-usb0-mux-v1-1-7903c3b071e4@oldschoolsolutions.biz/ Cc: Jens Glathe Fixes: f6231a2eefd4 ("arm64: dts: qcom: sc8280xp: Add Microsoft Surface Pro 9 5G") Reviewed-by: Konrad Dybcio Signed-off-by: Jérôme de Bretagne Link: https://lore.kernel.org/r/20260604-surface-sp9-5g-for-next-v3-4-6aa6f6612c10@gmail.com Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts b/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts index aeed3ef152eba..cdc2b0dcca27b 100644 --- a/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts +++ b/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts @@ -248,7 +248,7 @@ map1 { usb0-sbu-mux { compatible = "pericom,pi3usb102", "gpio-sbu-mux"; - enable-gpios = <&tlmm 101 GPIO_ACTIVE_LOW>; + enable-gpios = <&tlmm 100 GPIO_ACTIVE_LOW>; select-gpios = <&tlmm 164 GPIO_ACTIVE_HIGH>; pinctrl-0 = <&usb0_sbu_default>; @@ -1002,7 +1002,7 @@ tx-pins { usb0_sbu_default: usb0-sbu-state { oe-n-pins { - pins = "gpio101"; + pins = "gpio100"; function = "gpio"; bias-disable; drive-strength = <16>; -- 2.53.0