From patchwork Mon May 19 16:04:46 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Zhang <18255117159@163.com> X-Patchwork-Id: 2087589 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256 header.s=s110527 header.b=hchNlW0r; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=147.75.48.161; helo=sy.mirrors.kernel.org; envelope-from=devicetree+bounces-178570-incoming-dt=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from sy.mirrors.kernel.org (sy.mirrors.kernel.org [147.75.48.161]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4b1N862qFsz1yDM for ; Tue, 20 May 2025 02:15:34 +1000 (AEST) Received: from smtp.subspace.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id 581F47B0F36 for ; Mon, 19 May 2025 16:11:52 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id EA36728CF49; Mon, 19 May 2025 16:05:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="hchNlW0r" X-Original-To: devicetree@vger.kernel.org Received: from m16.mail.163.com (m16.mail.163.com [220.197.31.3]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 1131528C5DA; Mon, 19 May 2025 16:05:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.3 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747670736; cv=none; b=rf6yxfX6BWquseQ/QjcFk+yMoJn2IvNz9KNmjvGmMeUZJWMUWxxRi+VpOt6lapAl1sITtrfuKIAebyZWG88HM7yPHZGOW46RLKuZT3QAeHSBHXM+sCuQC3g2kmap5hITh1bDgg0OFLxNekqeMWvh8NDSvkJ54O5Uw86Tug5BG4c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747670736; c=relaxed/simple; bh=utww61uElrub22E1MtpRbKG8U//tpCzjiYPFEae5sdY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=liv+dedAFB5nZlzVial7BcGa6uji/YvZlS50dW4Gn8GC64LqCTYEk0LD23eSytxPQGQ/+ZdgVEJeRUjyjQtcspoMmzVn16QZBEPRwCSjkLjAZ+E6ZFaMkgJ7ZYIDTfcEZGU60ERl6ADlR/IAjTWRvVE76PvcX4eCX/QL1FmrlLk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=hchNlW0r; arc=none smtp.client-ip=220.197.31.3 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=oo uxVGY9XhCCHgWc5NChF1kCY5VbzSOry8izreFrBRM=; b=hchNlW0rfDP0lWU9+9 o4ruyDnnNyJCfloNN6GehWGo93BY/ouon5u03oY4ElbZU+vMZ7s2uToixTsdEMHG ja3+kDv7DwTSEjIpJs8rdq+tss/4YNJ0CkGTuzD8/nXGarI12BM3/I6aTlhatKqY 6w74SO3vtfEQd9n68VRoCC0hg= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g1-2 (Coremail) with SMTP id _____wDHWSeiVitokozvCQ--.46206S3; Tue, 20 May 2025 00:04:52 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: bhelgaas@google.com, lpieralisi@kernel.org, kw@linux.com, krzk+dt@kernel.org, manivannan.sadhasivam@linaro.org, conor+dt@kernel.org Cc: robh@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Hans Zhang <18255117159@163.com> Subject: [PATCH 1/3] dt-bindings: PCI: Extend max-link-speed to support PCIe Gen5/Gen6 Date: Tue, 20 May 2025 00:04:46 +0800 Message-Id: <20250519160448.209461-2-18255117159@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250519160448.209461-1-18255117159@163.com> References: <20250519160448.209461-1-18255117159@163.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: _____wDHWSeiVitokozvCQ--.46206S3 X-Coremail-Antispam: 1Uf129KBjvJXoW7uw4DuF1xZF1Dtw1rGFWkCrg_yoW8XF18pa y8CFyxtrW8Gr17W3ykXw1fAw4jqas3AayjkF98K3srtanxA3ZYyw43KFn8XF1xArWxZFW8 XF4Y9F15Cw1DAr7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0piyrWcUUUUU= X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/1tbiOgFSo2grT8qd+AAAsp Update the device tree binding documentation for PCI to include PCIe Gen5 and Gen6 support in the `max-link-speed` property. The original documentation limited the value to 1~4 (Gen1~Gen4), but the kernel now supports up to Gen6. This change ensures the documentation aligns with the actual code implementation. Signed-off-by: Hans Zhang <18255117159@163.com> --- Documentation/devicetree/bindings/pci/pci.txt | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/pci.txt b/Documentation/devicetree/bindings/pci/pci.txt index 6a8f2874a24d..5ffd690e3fc7 100644 --- a/Documentation/devicetree/bindings/pci/pci.txt +++ b/Documentation/devicetree/bindings/pci/pci.txt @@ -22,8 +22,9 @@ driver implementation may support the following properties: If present this property specifies PCI gen for link capability. Host drivers could add this as a strategy to avoid unnecessary operation for unsupported link speed, for instance, trying to do training for - unsupported link speed, etc. Must be '4' for gen4, '3' for gen3, '2' - for gen2, and '1' for gen1. Any other values are invalid. + unsupported link speed, etc. Must be '6' for gen6, '5' for gen5, '4' for + gen4, '3' for gen3, '2' for gen2, and '1' for gen1. Any other values are + invalid. - reset-gpios: If present this property specifies PERST# GPIO. Host drivers can parse the GPIO and apply fundamental reset to endpoints.