From nobody Tue Dec 16 14:54:10 2025 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.2]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4362020E00A; Thu, 29 May 2025 02:11:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.2 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748484674; cv=none; b=CaojPRYK6LWUnMZPrCWcb45X9yUSBcbGBhMB3o7lKDr0GK7VJj/LnmC2OfUYRdI2H8zTag1TzQR+XLszmXm4DgX4Y/i0XEHm38nWY25KW3velXInoUCy//JHhkCTHxA2oVrb1kJgmX6tFG9AEgoSo21PYadrAt4R127E/zouia0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748484674; c=relaxed/simple; bh=B3zeO8g4fFN8F19L04LcwNQHZiE3uxCJY/TJ/CN6c8M=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=p2QG6FPqM6jHdklA6jehKQaWLIT6CUz5RO75ae3EUFh3SlidQ1V9sOsV5cuhhElr6dQ6l+SZUucwX65hTIUqin5aFxSD2d/Z+iLv/PMO5GfyWt9G0u76TYsGFVCOgQJH4ofyfcouJhkt9YmJVl1DPEBWEow9UMA/TfBQyPF3Se8= 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=aBdLgbhj; arc=none smtp.client-ip=117.135.210.2 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="aBdLgbhj" 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=6F GpfdKChf67+YNJyhUDIvvblsh59zW18p9yEzKXv14=; b=aBdLgbhjcuEXQBu/dc D9/YCmVfW+xrEGT3r+JOru7/yoHfE939AIbPcOdDx42N+rtExbM4Cy1YenyIJo3z VOh0IDZaxL58RfejY1XABwZdAsjzR0pHBizlj6gu/0xhfsQg8qcE05yjX8zLBp9+ kMFz6wUvxPvqMNscNgPRyn+0A= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g0-3 (Coremail) with SMTP id _____wC3we4Uwjdot_dqEg--.40331S3; Thu, 29 May 2025 10:10:34 +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 v2 1/3] dt-bindings: PCI: Extend max-link-speed to support PCIe Gen5/Gen6 Date: Thu, 29 May 2025 10:10:24 +0800 Message-Id: <20250529021026.475861-2-18255117159@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250529021026.475861-1-18255117159@163.com> References: <20250529021026.475861-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wC3we4Uwjdot_dqEg--.40331S3 X-Coremail-Antispam: 1Uf129KBjvdXoWrtrWUZF48XF18tw1rJw45Awb_yoWDZrgE9F y8Jws2q3yIvFZ8Kw4rJFWrGFya9a1jgrsrJrykXF1jya45ZFWkuFyvyay5Jrs8W3y7ZF43 Ar9IyFy0kr17CjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRZL05UUUUUU== X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbBDwtco2g3vlq+SQAAs3 Content-Type: text/plain; charset="utf-8" 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> --- dtschema/schemas/pci/pci-bus-common.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/dtschema/schemas/pci/pci-bus-common.yaml b/dtschema/schemas/pc= i/pci-bus-common.yaml index ca97a00..413ef05 100644 --- a/dtschema/schemas/pci/pci-bus-common.yaml +++ b/dtschema/schemas/pci/pci-bus-common.yaml @@ -121,7 +121,7 @@ properties: unnecessary operation for unsupported link speed, for instance, tryi= ng to do training for unsupported link speed, etc. $ref: /schemas/types.yaml#/definitions/uint32 - enum: [ 1, 2, 3, 4 ] + enum: [ 1, 2, 3, 4, 5, 6 ] =20 num-lanes: description: The number of PCIe lanes --=20 2.25.1 From nobody Tue Dec 16 14:54:10 2025 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.5]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 0A5AA242D60; Thu, 29 May 2025 02:11:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748484674; cv=none; b=rEUWtmDUsIN7sFCSv0QfVZ6J1w5STFCCEBzKMciMvyf5vgRzktSZ3jaFAFhQO7jcDZ5aMQxtvygEQ3ZmuqMGBE1zV4srEn1R81u15wN99fZD9HehAsms0YLmG/nfPmiULvmNRiZVAFGNFDua93/Xwb/RGu6prqOnHQd907jIMmw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748484674; c=relaxed/simple; bh=yROuWMz5tpoccEEXwruiMnFO4fu2RIJRme5SmCASgFU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=nzbLmUANizksVirDl/DD30fIfWPlI2YhggUzwm8g4At1raAGyqJ8tbnl94XnXAfcqrIoZORG/kHuc5Bso1eUgWt0LBbqv3QUtWThbPeHiG5iPAbKoaf10jYUh/9VjE0s+VeDTs7KRFCjdKA0bB82bY2OpJ+hjhIoBdk2NIywnbs= 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=AMZ0r8eC; arc=none smtp.client-ip=117.135.210.5 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="AMZ0r8eC" 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=CA Fxj+rb/r9uwLufsBzLzI7S2IO7EmqXIwnAuOg88+c=; b=AMZ0r8eCPBNbgrOkCO cswKADPPaVzWoblxQNKq6IcooM7terh5zthG9B89AcBzzGvowo7IoU8YxtG9LWxd rH4Bk8TQVFenaI8AOtFbu4ZIfx6eNHfeuLFXh00Z5o1ZOf9ubSfZ9Qg+qxGksFkG ANdfdYbNzb5DPeqOnRbhtgAJs= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g0-3 (Coremail) with SMTP id _____wC3we4Uwjdot_dqEg--.40331S4; Thu, 29 May 2025 10:10:36 +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 v2 2/3] dt-bindings: PCI: pci-ep: Extend max-link-speed to PCIe Gen5/Gen6 Date: Thu, 29 May 2025 10:10:25 +0800 Message-Id: <20250529021026.475861-3-18255117159@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250529021026.475861-1-18255117159@163.com> References: <20250529021026.475861-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wC3we4Uwjdot_dqEg--.40331S4 X-Coremail-Antispam: 1Uf129KBjvdXoWruFWUCrWkCw13Jw18CryxuFg_yoWkWFg_uF 1xAa1qvr4rJFyYgw4YyF4xtF15Za1jkrs7Cw1kJF1qya48ArWq9F98t3s8Ar1fCayfZF1a 9F93JrWDXrnrGjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRCeHqUUUUUU== X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbBDwhco2g3vlq+nwAAsi Content-Type: text/plain; charset="utf-8" Update the PCI Endpoint (EP) device tree binding documentation to include PCIe Gen5 and Gen6 support for the `max-link-speed` property. Similar to the Host Controller binding, the original EP binding limited this value to 1~4 (Gen1~Gen4). With current SOCs requiring Gen5/Gen6 support (e.g., Synopsys/Cadence IP), this change aligns the EP binding with the kernel's PCIe 6.0 capabilities. Acked-by: Rob Herring (Arm) Signed-off-by: Hans Zhang <18255117159@163.com> --- Documentation/devicetree/bindings/pci/pci-ep.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/pci/pci-ep.yaml b/Documentat= ion/devicetree/bindings/pci/pci-ep.yaml index f75000e3093d..68aaad70b112 100644 --- a/Documentation/devicetree/bindings/pci/pci-ep.yaml +++ b/Documentation/devicetree/bindings/pci/pci-ep.yaml @@ -33,7 +33,7 @@ properties: =20 max-link-speed: $ref: /schemas/types.yaml#/definitions/uint32 - enum: [ 1, 2, 3, 4 ] + enum: [ 1, 2, 3, 4, 5, 6] =20 num-lanes: description: maximum number of lanes --=20 2.25.1 From nobody Tue Dec 16 14:54:10 2025 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.5]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8A140242935; Thu, 29 May 2025 02:11:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748484674; cv=none; b=Hri5Xcp4J2e0IrLk4fvoJm1r2ORLWpSyOyJegPHUvP9W7VOQ2q7Iaym691HOE2Y1Ly3eCJ17N++mCga0sNOP3rz2LY9Znv48uwVld6YvG6p6zdnrpx8dJDQMPaiPBLwt7JzJh9bKhAtR+bMZMMhgzdBur+Dzl0YzbplH4rksMjo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748484674; c=relaxed/simple; bh=UamZjfyN6na3p67Dkavvu/KY840DiztSpAhsgs34BpE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=f4shimrHyPbdBfA/T4R5PdcAamznIqQ8vnXQwU9pqf1aWPRn3jnOHqNAdLizwvYKsCMZimMjFs69plJOiKSZBnU3Lz/cnDG8vQWubIUbStoaYnFzkMKFs4axqRt17vMGBvKLf8wAb1Ym11Jj2TIsQ/XHBL5rFFDQAS6heTvPags= 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=gHkFM/fn; arc=none smtp.client-ip=117.135.210.5 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="gHkFM/fn" 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=ij u8xELG4+fnR3215qcICf+KmnT2kIbCVpbjooreXLw=; b=gHkFM/fnJjff8yeMQq GhkZU7Mq0tueamWdq/cBysm9BloFqG828mZhXp2f8CXzl3SHl5NuxK05kRhA3XCT IFtoIopCq6zH8NrHXh2rkyxld8KM3/pZSYi8lc8BDvXh7kwnQTntSrjdkHvp4LQI SCbRaUUh2UvoDfMqHXtaycZ8Q= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g0-3 (Coremail) with SMTP id _____wC3we4Uwjdot_dqEg--.40331S5; Thu, 29 May 2025 10:10:38 +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 v2 3/3] PCI: of: Relax max-link-speed check to support PCIe Gen5/Gen6 Date: Thu, 29 May 2025 10:10:26 +0800 Message-Id: <20250529021026.475861-4-18255117159@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250529021026.475861-1-18255117159@163.com> References: <20250529021026.475861-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wC3we4Uwjdot_dqEg--.40331S5 X-Coremail-Antispam: 1Uf129KBjvdXoWrtw43uFWDZw4fKFyUGrWDXFb_yoWfAwbE9F 17XrWfGr4Fkry5Gw1YyrWavrn0v34rW3WUXFyFy3WfAa4UuFyDZFnxuF45Za93A3W3JF1U GFyDGr1UKr1DKjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xRRuyIUUUUUU== X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/1tbiWxlco2g3vsGtewAAsL Content-Type: text/plain; charset="utf-8" The existing code restricted `max-link-speed` to values 1~4 (Gen1~Gen4), but current SOCs using Synopsys/Cadence IP may require Gen5/Gen6 support. This patch updates the validation in `of_pci_get_max_link_speed` to allow values up to 6, ensuring compatibility with newer PCIe generations. Signed-off-by: Hans Zhang <18255117159@163.com> Reviewed-by: Manivannan Sadhasivam --- drivers/pci/of.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index ab7a8252bf41..379d90913937 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -890,7 +890,7 @@ int of_pci_get_max_link_speed(struct device_node *node) u32 max_link_speed; =20 if (of_property_read_u32(node, "max-link-speed", &max_link_speed) || - max_link_speed =3D=3D 0 || max_link_speed > 4) + max_link_speed =3D=3D 0 || max_link_speed > 6) return -EINVAL; =20 return max_link_speed; --=20 2.25.1