From nobody Fri Apr 10 05:18:23 2026 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 6BB2A175D53 for ; Thu, 5 Mar 2026 06:21:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772691666; cv=none; b=LQIb8kNQegC13kp2Z0zwSMW/jt2b1sy77CfWA2OGVAcoKIwWITwkgzUA1hseTs8s0Ss5zWNUxhbUEN58fIjCKa2s1z1RkUivcSAI/ysd6xHrbN04IelE8jOx/dO23rtNHDfqro+clzQ4HQgIYvEyYqYoNea9oieqh0zI1vTCi6Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772691666; c=relaxed/simple; bh=+S/OPWfD8jiRnySHXDwKPl0Gx38XUkXnA2tMQyqcytY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=XV0T96MB7aRdwZ27rHMcevaPLF7qg1j0xyyS85oMWvKpkRl+6hnOjF3nrPbxX/mY4FXHCEBOBhrBTuxWfVhI7KoUxfgETe7FxMLZzMCU/LWhUQWSUnDQPgUXbBuc/fonDrrDCrGQ32RnYHSzIZ0/joG/Ml5gGxMwfwN2fmzq02k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=ju9HgQ8Q; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=W9YC0jei; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="ju9HgQ8Q"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="W9YC0jei" Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6254KHRA1853000 for ; Thu, 5 Mar 2026 06:21:04 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= rgaCGe2HP5UpbVXKB+EsAI8njddCU+iXqu2dkviOtjA=; b=ju9HgQ8QDLzph2X2 xcDGeWw8SDOnOkvNNbt49XN4ZK+XhDud5SLcq0Ghl1tvktnW2BjVxoexEvKd3IQg QDZZ8u0G2DkHpJ5Uck7sp2jum/GBWLKHCaigUwZ003HZm1LismPGqN1kyiGdphzd cQxtKl3qS39B+ozKyzA+57WMI4NcvDONPwoguFukPRUOEHrsuBaC8BHxGSXaOWY+ E+Y3H/bDoKGtm/uPPpMmUw9NIox+WUwghBOxxcLzwOoSPeZeuQFD5nN2daV3jl6q nM8T2ttith7sadvyGNney6CIhS3wwj2SoMler+1/clVjqTX8YwYWXqEXmnlGHfxP G41tfQ== Received: from mail-pj1-f70.google.com (mail-pj1-f70.google.com [209.85.216.70]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4cq2q80b54-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 05 Mar 2026 06:21:03 +0000 (GMT) Received: by mail-pj1-f70.google.com with SMTP id 98e67ed59e1d1-358df8fbd1cso7110013a91.0 for ; Wed, 04 Mar 2026 22:21:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1772691663; x=1773296463; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=rgaCGe2HP5UpbVXKB+EsAI8njddCU+iXqu2dkviOtjA=; b=W9YC0jeiO4xTZ+Hr1GTiNBiFd/sMGQ9+BLzoCTQNRCOzaTcFlo3+s7du05QuUF4zFK m+aXtPLs/pM/Hmjcr0BNG08Stl7BNrJWnaLkI7g7TINCTzvIHFhmkYtVTyeNM5zjGTaC k9234w/cFdgRefd5/8m8IpbidIdB73BlcUGWKb2DEFwG0n+UfQfvl3o18WXq2EsLzOFo r7NEhcrNvI9LPtc5F7mtPHNfbAyTnZbkYOdpiUbHBWW4c/ZvG8YFsyz5s+Gohjnqufm1 RE9LQzCVwh8krcq26IEersEwl1BADq1OCyW/i7ccBf9yN7PYy57bssD5f+WiaCoO0qWI igAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772691663; x=1773296463; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=rgaCGe2HP5UpbVXKB+EsAI8njddCU+iXqu2dkviOtjA=; b=bN7LjQc4lfjAzl1Ua8dRcxcVnfiS7zelCY8hmuhhwAr3QsuRTPXAS+hHD/oDwIf5iL lWtVh9YSC2dev7GZLIL8B6/eNpBEj3DNd8opaXI+Am5VRQTHa3Uy2tsJwyoMM6bqnS1e MNd9IgKY+WypoQD6QDmJrMsQx4wvR1qxCR3FH+VzFiWJDViBPppm6B3DALCX3o2CdcYj F+C0DCMgk+OGWPfFkoF2T0GaNPGdiL38XBPjlVgwW0bgzp+TUWTD5W3Kq1HczGecPfzI i4POn43XIz1Sv1AbGKd3eYaO5b7icRc3+QBd9PtjRbyetjgLW6keHMJGZMRrFdGZGIMt OEmA== X-Forwarded-Encrypted: i=1; AJvYcCWwrkgDm1AamgZRvIUVyVxR/3NhgekO8LYqf+Ke29Xj+VcjaH9mv8+5rG1IcLwmd871daZReD6NNXAgE4M=@vger.kernel.org X-Gm-Message-State: AOJu0Yzmp/BtsmpNwD6x9e4tUJf0Kf5ncpyxCLZGawvBS1Ab0iaL/2lW wGjK4C/Vp9z34yA8O5drs5JHqgPz9n8jj+qrwhJNPfhI2gaC7Ah4AjQFLXQGG5edbNekIIUtrL+ YU/d1cMldmVwEwEvMnDGfVXyVUKQun6EfHJ9o9B5vrBdl01ldH4QcodLYIMU73wkDGGI= X-Gm-Gg: ATEYQzzzAe4qm8ev182zsHWU5+bASoPCX+Ny1DkWpnCnlvjwZjNk3xuvQyo4y18WJvx wC1ZOpDY3ShVnUEiP8P1iSV8gqPb/3sHkf+ggyJj2q2P6TXpLnrwyiWVSAYhgJAW0oUWVShttD+ rbpJiQBq8K7HzzVlSZJm2GXpp0Fqw4NJuatY/46aN4fp1oOtu2UXbmNcRxDF1M4PaPGnYYnmWsr MoW2eVJZPqeSPmzWg/YZhY31yAylI573naj8B8p/ZrCO9l3ihyMUZ6QXMQPaAGdf/Hskdk0rNcs zpDtCG8U7sfplMBtzX+Svh/IGjF1HxGMOUSXSoADvuQViznyn0Uq6Wzdf3aT89hnHq+/M0roPM2 BbKerkQT7sJ98CiSp2Ua+q3J5a51i78gcGekQejIoKQQoUuw= X-Received: by 2002:a17:90b:5386:b0:354:bfb7:db13 with SMTP id 98e67ed59e1d1-359a6a922b5mr4188007a91.35.1772691663110; Wed, 04 Mar 2026 22:21:03 -0800 (PST) X-Received: by 2002:a17:90b:5386:b0:354:bfb7:db13 with SMTP id 98e67ed59e1d1-359a6a922b5mr4187982a91.35.1772691662515; Wed, 04 Mar 2026 22:21:02 -0800 (PST) Received: from hu-sumk-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-359b2d38ab8sm843378a91.1.2026.03.04.22.20.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2026 22:21:02 -0800 (PST) From: Sumit Kumar Date: Thu, 05 Mar 2026 11:50:36 +0530 Subject: [PATCH v2 1/2] PCI: API changes for multi-port controller support 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: quoted-printable Message-Id: <20260305-dt-parser-v2-1-85836db8dc06@oss.qualcomm.com> References: <20260305-dt-parser-v2-0-85836db8dc06@oss.qualcomm.com> In-Reply-To: <20260305-dt-parser-v2-0-85836db8dc06@oss.qualcomm.com> To: Bjorn Helgaas , Jingoo Han , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Krzysztof Kozlowski , Alim Akhtar , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Yue Wang , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Paul Walmsley , Greentime Hu , Samuel Holland , Chuanhua Lei , Marek Vasut , Yoshihiro Shimoda , Geert Uytterhoeven , Magnus Damm , Pratyush Anand , Thierry Reding , Jonathan Hunter Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, imx@lists.linux.dev, linux-amlogic@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-tegra@vger.kernel.org, linux-riscv@lists.infradead.org, Sumit Kumar X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1772691640; l=3103; i=sumit.kumar@oss.qualcomm.com; s=20250409; h=from:subject:message-id; bh=+S/OPWfD8jiRnySHXDwKPl0Gx38XUkXnA2tMQyqcytY=; b=TK72jjuJyknXwVLrSUwewEGuy6eruyMEMLoyVD7ZdXByX5WQ08ffPNtXIK0+Zxd2Jj9MJeA9E OHWFPph2BbeAOAPQu90/A9/51gkVzesqs0Q6tFz6anwYgEZlA0RRnh3 X-Developer-Key: i=sumit.kumar@oss.qualcomm.com; a=ed25519; pk=3cys6srXqLACgA68n7n7KjDeM9JiMK1w6VxzMxr0dnM= X-Proofpoint-GUID: Kv9jIpUgr5Ts2m4Ir_3KyBq-uScM7Gq5 X-Proofpoint-ORIG-GUID: Kv9jIpUgr5Ts2m4Ir_3KyBq-uScM7Gq5 X-Authority-Analysis: v=2.4 cv=GecaXAXL c=1 sm=1 tr=0 ts=69a920cf cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=ujblt7VnwxmsJrSXvRcA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA1MDA0NyBTYWx0ZWRfX1N7BbOvnqt0c HI9QpXawwd8OFM+9a578epYm3vzGFnREbGbVsw4n5HzqgXB4shE3ceVrEgplpuahvjke5s0lMig 8WW1ezgkpTgA/i+bkHio52dVyT6w7qhFHs0QCFTvY2WjkmTsgjeY+Yk4NxVX6/e6GWqJda+JIhk hXJjYLZaqKErHhtB1V/eOTteTFpUELlQt5MbjUh+Eng1AGMriGF1lhVd5wehs/0SAUoTOErml4O DhhCNVcmQVKtkihDdElxO1f4fBFcEy3PcywsgolE6bSAfqvcqEDC/Zel3isOYHsGCOAIeJHtlQL TsjU8gB2u4OyJ+i4nI/Mcw8lrODqxf4GcyB4xQWPmEBd/TcuJXy+o8v8R5MtrvSqucQ3Z4ahJaL 9Sr4i6OdTj3Zwmot07WTBEQyaVzsvdpTP+Rb65tsCt1fXEZPb8hPaIjYmQq1Hjk9JIL9aH0K/+x 5EQAvDLl8pZkWYP8P3Q== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-05_01,2026-03-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 bulkscore=0 impostorscore=0 spamscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603050047 For multi-port controllers, equalization preset properties should be specified in individual Root Port nodes rather than the controller node, allowing each port to have its own configuration. Change of_pci_get_equalization_presets() to accept a device_node pointer. This allows parsing equalization presets from any device tree node, which is needed for multi-port PCIe controllers. Signed-off-by: Sumit Kumar --- drivers/pci/of.c | 6 ++++-- drivers/pci/pci.h | 2 ++ 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 3579265f119845637e163d9051437c89662762f8..d09eff40b523c920c9ca3eaa64f= 784765b3c5bf8 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -971,6 +971,7 @@ EXPORT_SYMBOL_GPL(of_pci_get_slot_power_limit); * of_pci_get_equalization_presets - Parses the "eq-presets-Ngts" property. * * @dev: Device containing the properties. + * @node: Device tree node containing the properties. * @presets: Pointer to store the parsed data. * @num_lanes: Maximum number of lanes supported. * @@ -981,6 +982,7 @@ EXPORT_SYMBOL_GPL(of_pci_get_slot_power_limit); * errno otherwise. */ int of_pci_get_equalization_presets(struct device *dev, + struct device_node *node, struct pci_eq_presets *presets, int num_lanes) { @@ -988,7 +990,7 @@ int of_pci_get_equalization_presets(struct device *dev, int ret; =20 presets->eq_presets_8gts[0] =3D PCI_EQ_RESV; - ret =3D of_property_read_u16_array(dev->of_node, "eq-presets-8gts", + ret =3D of_property_read_u16_array(node, "eq-presets-8gts", presets->eq_presets_8gts, num_lanes); if (ret && ret !=3D -EINVAL) { dev_err(dev, "Error reading eq-presets-8gts: %d\n", ret); @@ -998,7 +1000,7 @@ int of_pci_get_equalization_presets(struct device *dev, for (int i =3D 0; i < EQ_PRESET_TYPE_MAX - 1; i++) { presets->eq_presets_Ngts[i][0] =3D PCI_EQ_RESV; snprintf(name, sizeof(name), "eq-presets-%dgts", 8 << (i + 1)); - ret =3D of_property_read_u8_array(dev->of_node, name, + ret =3D of_property_read_u8_array(node, name, presets->eq_presets_Ngts[i], num_lanes); if (ret && ret !=3D -EINVAL) { diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 34f65d69662e9f61f0c489ec58de2ce17d21c0c6..72fa6db95b8a75f6e69b8019d1e= b2262b6a46c13 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -965,6 +965,7 @@ void pci_release_bus_of_node(struct pci_bus *bus); int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *br= idge); bool of_pci_supply_present(struct device_node *np); int of_pci_get_equalization_presets(struct device *dev, + struct device_node *node, struct pci_eq_presets *presets, int num_lanes); #else @@ -1013,6 +1014,7 @@ static inline bool of_pci_supply_present(struct devic= e_node *np) } =20 static inline int of_pci_get_equalization_presets(struct device *dev, + struct device_node *node, struct pci_eq_presets *presets, int num_lanes) { --=20 2.34.1