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 A4FC0476CC0; Thu, 20 Aug 2026 14:24:31 +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=1787235872; cv=none; b=cvxQjGwXGM7dJYPROtbk7YraXFY33oytAqYYTYwuEKfsmQJKV7UtVm/YUryXsY2L6zAm011GTBAnhwXQwCzNm4iF3m2Epx8uXXxyXr8L4TMGmkWCHdPYsz7ObaK6iqJ8uEOUnUZh9Hd9WRvPGLHxG567tivMy54gauFJ0QaTBEk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787235872; c=relaxed/simple; bh=MTnzSawRiO7pVYBSwuC8busFqPG5rCphwOckVh+Kjrc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=CjeHYXP9I3TB9zHvfIk7/erTNvnFyJIVjhIVPQxpRGwxnlLlZkHaQZxK3DDHm9YVBMiMATGLWUGb05/vLd0CFl+hO02Hd9olyAx/zwzQLlOOLqYR7evs9h3ktyUc71nUAq0XYIK6Szlp83Cu+7PvVflrfHmIZIFiLPxwR+CeLsk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=J9hHG35v; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="J9hHG35v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C34371F000E9; Thu, 20 Aug 2026 14:24:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787235871; bh=Dj1r/wWB/aOZdgGoUdJw65LeZetntGEUGM/wi7bHYTA=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=J9hHG35vG5WC49HR7pSe9aEKjIxS6X9QEtH6wuwyqspHCnVQ6MYjAY6lzIiTVsmUC TInEIv082U/t+1N5gQVs7w5zwE29qdOZSGjxpps2Gb/Vj3r7N24fd4aU38dSXGQPY4 aHmE5rProDNTZhZN0g0EaGVCYpAWv+JWq47FFHffMTACOeK6ixBNwWYnBz0GqIPfAc eLwbMgem++wOEnD+l13duPhqAbAjv6TczdxPg8uDaw1rWf2q7DlokBr0lZxwA+Y0V5 vn0I6XspxI7bxCxoh3er2CSv/+vzeQ8dG9Ls/UU0zcZFkWt686ryo6g7JuK9TyOaN8 X/0nf7aQqEowQ== From: Konrad Dybcio Date: Thu, 20 Aug 2026 16:24:11 +0200 Subject: [PATCH v4 2/5] phy: core: Define TBT phy_mode Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260820-topic-usb4phy-v4-2-aec9d2cb31f6@oss.qualcomm.com> References: <20260820-topic-usb4phy-v4-0-aec9d2cb31f6@oss.qualcomm.com> In-Reply-To: <20260820-topic-usb4phy-v4-0-aec9d2cb31f6@oss.qualcomm.com> To: Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Manivannan Sadhasivam Cc: linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, usb4-upstream@oss.qualcomm.com, Raghavendra Thoorpu , Mika Westerberg , Sven Peter , Konrad Dybcio , Dmitry Baryshkov X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1787235854; l=1880; i=konrad.dybcio@oss.qualcomm.com; s=20230215; h=from:subject:message-id; bh=yWJCXvkxQGVASlmRT/ShbWiojv2uvFf9iNjzF84+L7k=; b=+CRDiHMP9fTgIfTxD7aVLbZ+7YmvEMmfozVp/PghXDxEX/IEjqiW5F4pbvppIpMMBDtWyRRNs ZIkZNUV7l9LDh4OFeni0mlrVY6Qvqz6FU3bciaK77xprW22h/aS4jEc X-Developer-Key: i=konrad.dybcio@oss.qualcomm.com; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= From: Konrad Dybcio There exist OS-accessible USB4 and Thunderbolt PHYs that need specific configuration. Define a new phy_mode for them. Currently, USB4 and TBT3 are defined as submodes, because they're quite distinct, most visibly in the electrical/analog aspects (slightly different frequencies, timings, etc.). This results in a need to make the PHY aware of the actual mode needed (at least in the Qualcomm implementation, but I believe that'll be a general need). Newer versions of TBT are basically supersets of USB4 with higher host-side requirements, so these are not defined. This can always be changed as necessary. Reviewed-by: Dmitry Baryshkov Signed-off-by: Konrad Dybcio --- include/linux/phy/phy-thunderbolt.h | 14 ++++++++++++++ include/linux/phy/phy.h | 2 ++ 2 files changed, 16 insertions(+) diff --git a/include/linux/phy/phy-thunderbolt.h b/include/linux/phy/phy-thunderbolt.h new file mode 100644 index 000000000000..5f48059814e1 --- /dev/null +++ b/include/linux/phy/phy-thunderbolt.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#ifndef __PHY_TBT_H_ +#define __PHY_TBT_H_ + +enum tbt_phy_submode { + PHY_SUBMODE_TBT3, + PHY_SUBMODE_USB4, +}; + +#endif diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index ea47975e288a..3a2ace2cadff 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -20,6 +20,7 @@ #include #include #include +#include struct phy; @@ -45,6 +46,7 @@ enum phy_mode { PHY_MODE_LVDS, PHY_MODE_DP, PHY_MODE_HDMI, + PHY_MODE_TBT, }; enum phy_media { -- 2.55.0