From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 DAC6333B94B for ; Mon, 5 Jan 2026 12:28:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767616104; cv=none; b=MyZ6f2cYE27T/MZH2pvVunRH8/c1hLR/A+9Z8lkH+X4Iw9HwVVtnf3CiHr/uakW5090pHpAZvigbFRIzZ1dxcT0ajWOjRONM/HdOAPkwoW+6nfKxewmEbkjhG/CX1sejEYwWMw1qb6qVjAwkoQCgpUN54HMg4bULpZH0rgYRuTE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767616104; c=relaxed/simple; bh=PpB/m1gJTMQMTX0vFxuSFv/chuv/UflEufPn0M3zptk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=BMd/dOhzcZLZeRdKNwHArLbmG2P+bYFpCMkbOGG8KgmHg5yqrotb7cYQ4Uu6gQb2tquMPhposgfbqIm4ZjVbbt31+UN7A+TxGp6PpA1s7sa65bLU39QorP6U3KV1qv2c8Ws6o1pcFAm4ctZdRNDuxJ8VmGX63pWP3R8Sy4dgiWo= 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=eBI69wSI; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=PpfD1nHB; arc=none smtp.client-ip=205.220.180.131 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="eBI69wSI"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="PpfD1nHB" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6058508D978589 for ; Mon, 5 Jan 2026 12:28:20 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= CBFYHO0C6Kk6N+QrFXXXFlcKOp9qo98Yeql0J+xKQe0=; b=eBI69wSI/osXsl7O qRyjkGuMysg9O8lz8xtVuXcwubY6v2F+C0GRWT/5z+rQWNGoubCdc5CbZO5V3A78 oJY2G9setfBVLvNV0mif9MQoSJohxQ5sKNax5Vc0kTxtLL0IM+/ASxpaw35NtVSI WcDZA9xEQDSjgTiGZTQvxB+/JEeLykLrybV/mJzd7XHo4MHsJ8dh421HL6uJmSy0 uYSi9CQT4XiUJV+8MGK5sPAXV9pONYMVWIYC81S8NQVLBBVrDFSUYe4NSsJCCOwz nbMe2tWAePT4ihOqcDDRF2C2dOGKL8LV4EEKEMxbd6eazd9rQpJvwjHXrArs5kx5 hvuG7g== Received: from mail-pl1-f200.google.com (mail-pl1-f200.google.com [209.85.214.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4bg9ftgr3h-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 05 Jan 2026 12:28:20 +0000 (GMT) Received: by mail-pl1-f200.google.com with SMTP id d9443c01a7336-2a0f4822f77so378886345ad.2 for ; Mon, 05 Jan 2026 04:28:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1767616100; x=1768220900; darn=lists.linux.dev; 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=CBFYHO0C6Kk6N+QrFXXXFlcKOp9qo98Yeql0J+xKQe0=; b=PpfD1nHBNhzbWuslslPyudixGbgTqPYLUTM5o9RMkNPH1r4LzrrC+EB7HVdU7+rJ8e MW/Vg5TnoODFmjSIT77Yw9KBeIngexHNTRt2LlAzaLb8HC1I0LGIrTYXK4kjA251J3W9 A4U7Yh0C/LoS0uXmfutxHQyXhyFLS3ZhCrmu2nrXhGPKHFtdLiTVnND85UYdNwPAtcv8 k0PdfjH63IoccQFiS+3drC5/4rgmhsuXsAXWwI/wagSWhjUFn4u94F88ECBQ+z/5/h4w 9Y4B47N/meT1QzIUi2L5r43lzxkkw3fwCQKNuo/pilq3vyD+lAri0pyN5N5w5WIUzusB cyzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767616100; x=1768220900; 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=CBFYHO0C6Kk6N+QrFXXXFlcKOp9qo98Yeql0J+xKQe0=; b=LUJ9U2dkZ2O9vahHkJlI3tjSWO3ROAeK5sSOn9j2ZJDxVXWbkChaEKzzgayFNqhySE BjJWPhwETn9AwVjkZkmEqup8X37Cu/mptQWyYukCzGwumfXSkmW9J2lMdRUFdvDZplKB idvYxAa7tGymv57//7s1E4LOtBkDa+ATiTN65OG/tFw4+tCycNW6sKOY2b7ACkZ1sIAm 6+AEWZy8fmGBnf6+vy5nj9w9L4UDq6i09VLLA1jtmsHy35dwmhe2MFHNdW9NoG8uwAkE dwF4oB4ado9EGtDohbTv7WI4+gYSMfhEw9B6S1A+NzSqAXMNhRfoctatpQL5fx74ssjl msgg== X-Forwarded-Encrypted: i=1; AJvYcCWbK8JbnG63xGAjIxjaCOgnIvxG+1U/BsTWY6hc5szcgW3sUS4rhv84yK7a+JxMoleUju4=@lists.linux.dev X-Gm-Message-State: AOJu0YxdNSAGEICsG7B5lfDEV+JDv3Of2065l770YirHvck1f9KGUNw6 jHD5pIvJt5DafItoa1VcFRLwXDrasQkTM3PdUrclZQv+EsnRK3Pm5F9ZOtgNnB6ODL7E7kCUBJS 0kuXSmrOpQU5A6L5YLBkpOtkt3bXiqFb6IhNrGuTshzFmQE3wOnm7yt0= X-Gm-Gg: AY/fxX7W+gBjVJ8nNcSKBPmtcWU2Av5RcLGlLFR/v2HDIiQFRiNVkfWwpTF/eS9NYqh oyp1JnQ7MmhRt7I5er9EyWL1l4yz7anhTLM4S9OaM9TivJX9blKSKd8BWnLWzR2IxrG7biwGnMZ 6Qg8+oulgsJqZ0BLPUH6hvtOo9E85Iv+Ic4zmNa1fbMMJOtlKfsbDOvNMzR64dqCwV908/s10iU K0EO/hsj4RTHQysHkp6SBubOH5Y2TLSXaBhj4okOAu1itRH9NTI5MjSxLhdcQrfwDfmjy/51iZi T6alYVSaOHvwSIRtSNWb1vU1sYm50nFRXV/xEB3IHhyutoKbv9vPma8H+M98SDrk4ywpCh7QkGh YDeYuvlzYCDicMExzW5xFUvCmwF5+iMnyrtA= X-Received: by 2002:a17:903:2f82:b0:2a2:f2e6:cc54 with SMTP id d9443c01a7336-2a2f2e6cc7bmr512249825ad.4.1767616099614; Mon, 05 Jan 2026 04:28:19 -0800 (PST) X-Google-Smtp-Source: AGHT+IH0UKyUvXerMX21bnjBAhF6AG6XXCayaIe7tQngiVFg2WkvJ67HwAbgKGU99xM74jozlgyeNA== X-Received: by 2002:a17:903:2f82:b0:2a2:f2e6:cc54 with SMTP id d9443c01a7336-2a2f2e6cc7bmr512249235ad.4.1767616098933; Mon, 05 Jan 2026 04:28:18 -0800 (PST) Received: from hu-sumk-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a2f3c82a10sm448109275ad.26.2026.01.05.04.28.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jan 2026 04:28:18 -0800 (PST) From: Sumit Kumar Date: Mon, 05 Jan 2026 17:57:54 +0530 Subject: [PATCH 1/2] PCI: API changes for multi-port controller support Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260105-dt-parser-v1-1-b11c63cb5e2c@oss.qualcomm.com> References: <20260105-dt-parser-v1-0-b11c63cb5e2c@oss.qualcomm.com> In-Reply-To: <20260105-dt-parser-v1-0-b11c63cb5e2c@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=1767616078; l=3103; i=sumit.kumar@oss.qualcomm.com; s=20250409; h=from:subject:message-id; bh=PpB/m1gJTMQMTX0vFxuSFv/chuv/UflEufPn0M3zptk=; b=GZFtZaD7jCyIpCFrp+hdjsax21pknJcBxL8vAxnhFDnfZj47lMwrBRAT21E3qZGvMjJkEW8ux BqW2LAmuAn6Bin1Gz5N2VInqCcnD4NPJG2jM/9hN2ngl6jFso9HAv9x X-Developer-Key: i=sumit.kumar@oss.qualcomm.com; a=ed25519; pk=3cys6srXqLACgA68n7n7KjDeM9JiMK1w6VxzMxr0dnM= X-Proofpoint-GUID: v6X4dUjNtnK08Suq16ThxIyJc_grMPad X-Authority-Analysis: v=2.4 cv=GboaXAXL c=1 sm=1 tr=0 ts=695bae64 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=ujblt7VnwxmsJrSXvRcA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-ORIG-GUID: v6X4dUjNtnK08Suq16ThxIyJc_grMPad X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTA1MDEwOSBTYWx0ZWRfX309W/R6bY7rU VHTHM78j7J0aXTVXqn/0q9nxXZmYTHTHanbdHhhfN2dnfaMgXEQQLuJWYUi5JNCykbRVOU3vIUk JyenG8MVLkUovdAKpyFJ5DE3Nw7ulgT0B1wQnjrA4d7ynkP5bq/LpeZcscByFmVupDdT0sTNyB7 kYifqUXKivlhfYgaS7LbiTXaV+gK1+sPISMf5SCsagKHa2+kQf1rjwmNkz8D3Oqubo0TZ+nnN7p wmvEXw/LXQDVNZen4iBZebnHFlohbVla6S6kiyE9XbGPKYM32gLAoMu5SrlTQjGHADF7QRoeDcu l+B1I3sw8OMfncu0rPgAVrxd82O8lXAkR3AvtUfuTzYtwNTraY8jvjE7zJPQmcDTNaZX3IFpDkt V5r5exoCJHKMrvaAe9azq/qWAsM+1WyY4ca5pi2d2dZ/iWc83/mn8z9u1/lS8z7joGXNwdWIvxO AN2z0o42tSKOAICw59g== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-05_01,2025-12-31_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 phishscore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 impostorscore=0 spamscore=0 malwarescore=0 clxscore=1011 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601050109 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..d09eff40b523c920c9ca3eaa64f784765b3c5bf8 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; presets->eq_presets_8gts[0] = PCI_EQ_RESV; - ret = of_property_read_u16_array(dev->of_node, "eq-presets-8gts", + ret = of_property_read_u16_array(node, "eq-presets-8gts", presets->eq_presets_8gts, num_lanes); if (ret && ret != -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 = 0; i < EQ_PRESET_TYPE_MAX - 1; i++) { presets->eq_presets_Ngts[i][0] = PCI_EQ_RESV; snprintf(name, sizeof(name), "eq-presets-%dgts", 8 << (i + 1)); - ret = of_property_read_u8_array(dev->of_node, name, + ret = of_property_read_u8_array(node, name, presets->eq_presets_Ngts[i], num_lanes); if (ret && ret != -EINVAL) { diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 34f65d69662e9f61f0c489ec58de2ce17d21c0c6..72fa6db95b8a75f6e69b8019d1eb2262b6a46c13 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 *bridge); 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 device_node *np) } static inline int of_pci_get_equalization_presets(struct device *dev, + struct device_node *node, struct pci_eq_presets *presets, int num_lanes) { -- 2.34.1