From patchwork Wed Jan 8 02:50:24 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lei Wei X-Patchwork-Id: 13930073 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 9D6E5192D86; Wed, 8 Jan 2025 02:51:06 +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=1736304669; cv=none; b=SJmswW93ZG0d8X7vI7MYybwdv2BWw1N2EUSVk53hHYe/u7V1Om4KuTDteZ1V4t23dm4wmF/NG4UyAxA76T/wi53ZkqaivaubG4jAfujF07w9VIXo4w2gRe7Gym04Ddk/341ItuleTcVqlWnnRb/AG9yzxcZ6/GaLZcpUxxUTM7E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736304669; c=relaxed/simple; bh=ojXkiotBHQ9rAaYBnRCdE1xocadVCqvahUxximuBPGM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=c2WaYbU0ZhDl/rz6dT/JSUyzefTRbJECeEUg+n2u3/QwdPGYrDccMKTnDbhHYylgEnjqcCE0VkRi+lqX62Tl+XHshnaBSWrtnLMtBBKaBXliDHBUZnrErw66TEEIlWbYryvIOG5tcxF509SS3Tm2mLeUh9qyRg5fBPfrYd83LFw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=gHH0h3xR; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="gHH0h3xR" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 507ELVlO006129; Wed, 8 Jan 2025 02:50:50 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= TuHRJ7541Wr5H9B90tSRVYLZAZ1RhIehA4GQ1nrsq8U=; b=gHH0h3xRSfBakmTD H5uVefdSJT6iqmboQ6G7WdNhqbvK9eXKYGLcTY812HY3u3JmQUVTCVqazoDV5kKX 5xqPIMyI1trxNyHKpGtTSxJ+oIdF6tgkQYiOTTnrz9LQcJR3uQjV8yRWl0MLYO5i dJBLSwMSGVxnqPTwnTeoqMIn81/yVNjL1unWCjiCjjdMtb/nO+8WhRVXUeZvDE5J 9Od4Wpfn80Vzn4IXK91HxFDCGplG0hS1XID9VQBolpzt67swGNtvnhK6s67OzvLa IMEwwxKGkHk1wqByQzYp6gHV4bEfuv97crui5152yDjuw+UztsBRevOzsE43IB3o W2yC6w== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4415y9hmk2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 Jan 2025 02:50:50 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA03.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 5082oncZ014923 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 8 Jan 2025 02:50:49 GMT Received: from nsssdc-sh01-lnx.ap.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 7 Jan 2025 18:50:43 -0800 From: Lei Wei Date: Wed, 8 Jan 2025 10:50:24 +0800 Subject: [PATCH net-next v4 1/5] dt-bindings: net: pcs: Add Ethernet PCS for Qualcomm IPQ9574 SoC Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20250108-ipq_pcs_net-next-v4-1-0de14cd2902b@quicinc.com> References: <20250108-ipq_pcs_net-next-v4-0-0de14cd2902b@quicinc.com> In-Reply-To: <20250108-ipq_pcs_net-next-v4-0-0de14cd2902b@quicinc.com> To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andrew Lunn , Heiner Kallweit , Russell King CC: , , , , , , , , , , , , , , Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1736304637; l=8737; i=quic_leiwei@quicinc.com; s=20240829; h=from:subject:message-id; bh=ojXkiotBHQ9rAaYBnRCdE1xocadVCqvahUxximuBPGM=; b=P7ZXY+1BSI/jtrSy+BnVtUQxjLOItZJ18PoHgWLrs5UGnZrelV1gqwVablxUWUmV8Rxcy+e1/ KhN/ehyrtGqAP5aGpGnv2XEsyXFn2qfIH79t5kY8H2wMT7Z3NmmSpr/ X-Developer-Key: i=quic_leiwei@quicinc.com; a=ed25519; pk=uFXBHtxtDjtIrTKpDEZlMLSn1i/sonZepYO8yioKACM= X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: -MtjHqyZESkk1IX58K8k2pJrK1HrHc7L X-Proofpoint-ORIG-GUID: -MtjHqyZESkk1IX58K8k2pJrK1HrHc7L X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 spamscore=0 priorityscore=1501 mlxlogscore=999 suspectscore=0 clxscore=1015 phishscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2501080019 The 'UNIPHY' PCS block in the IPQ9574 SoC includes PCS and SerDes functions. It supports different interface modes to enable Ethernet MAC connections to different types of external PHYs/switch. It includes PCS functions for 1Gbps and 2.5Gbps interface modes and XPCS functions for 10Gbps interface modes. There are three UNIPHY (PCS) instances in IPQ9574 SoC which provide PCS/XPCS functions to the six Ethernet ports. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Lei Wei --- .../bindings/net/pcs/qcom,ipq9574-pcs.yaml | 190 +++++++++++++++++++++ include/dt-bindings/net/qcom,ipq9574-pcs.h | 15 ++ 2 files changed, 205 insertions(+) diff --git a/Documentation/devicetree/bindings/net/pcs/qcom,ipq9574-pcs.yaml b/Documentation/devicetree/bindings/net/pcs/qcom,ipq9574-pcs.yaml new file mode 100644 index 000000000000..74573c28d6fe --- /dev/null +++ b/Documentation/devicetree/bindings/net/pcs/qcom,ipq9574-pcs.yaml @@ -0,0 +1,190 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/pcs/qcom,ipq9574-pcs.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Ethernet PCS for Qualcomm IPQ9574 SoC + +maintainers: + - Lei Wei + +description: + The UNIPHY hardware blocks in the Qualcomm IPQ SoC include PCS and SerDes + functions. They enable connectivity between the Ethernet MAC inside the + PPE (packet processing engine) and external Ethernet PHY/switch. There are + three UNIPHY instances in IPQ9574 SoC which provide PCS functions to the + six Ethernet ports. + + For SGMII (1Gbps PHY) or 2500BASE-X (2.5Gbps PHY) interface modes, the PCS + function is enabled by using the PCS block inside UNIPHY. For USXGMII (10Gbps + PHY), the XPCS block in UNIPHY is used. + + The SerDes provides 125M (1Gbps mode) or 312.5M (2.5Gbps and 10Gbps modes) + RX and TX clocks to the NSSCC (Networking Sub System Clock Controller). The + NSSCC divides these clocks and generates the MII RX and TX clocks to each + of the MII interfaces between the PCS and MAC, as per the link speeds and + interface modes. + + Different IPQ SoC may support different number of UNIPHYs (PCSes) since the + number of ports and their capabilities can be different between these SoCs + + Below diagram depicts the UNIPHY (PCS) connections for an IPQ9574 SoC based + board. In this example, the PCS0 has four GMIIs/XGMIIs, which can connect + with four MACs to support QSGMII (4 x 1Gbps) or 10G_QXGMII (4 x 2.5Gbps) + interface modes. + + - +-------+ +---------+ +-------------------------+ + +---------+CMN PLL| | GCC | | NSSCC (Divider) | + | +----+--+ +----+----+ +--+-------+--------------+ + | | | ^ | + | 31.25M | SYS/AHB|clk RX/TX|clk +------------+ + | ref clk| | | | | + | | v | MII RX|TX clk MAC| RX/TX clk + |25/50M +--+---------+----------+-------+---+ +-+---------+ + |ref clk | | +----------------+ | | | | PPE | + v | | | UNIPHY0 V | | V | + +-------+ | v | +-----------+ (X)GMII| | | + | | | +---+---+ | |--------|------|-- MAC0 | + | | | | | | | (X)GMII| | | + | Quad | | |SerDes | | PCS/XPCS |--------|------|-- MAC1 | + | +<----+ | | | | (X)GMII| | | + |(X)GPHY| | | | | |--------|------|-- MAC2 | + | | | | | | | (X)GMII| | | + | | | +-------+ | |--------|------|-- MAC3 | + +-------+ | | | | | | + | +-----------+ | | | + +-----------------------------------+ | | + +--+---------+----------+-------+---+ | | + +-------+ | UNIPHY1 | | | + | | | +-----------+ | | | + |(X)GPHY| | +-------+ | | (X)GMII| | | + | +<----+ |SerDes | | PCS/XPCS |--------|------|- MAC4 | + | | | | | | | | | | + +-------+ | +-------+ | | | | | + | +-----------+ | | | + +-----------------------------------+ | | + +--+---------+----------+-------+---+ | | + +-------+ | UNIPHY2 | | | + | | | +-----------+ | | | + |(X)GPHY| | +-------+ | | (X)GMII| | | + | +<----+ |SerDes | | PCS/XPCS |--------|------|- MAC5 | + | | | | | | | | | | + +-------+ | +-------+ | | | | | + | +-----------+ | | | + +-----------------------------------+ +-----------+ + +properties: + compatible: + enum: + - qcom,ipq9574-pcs + + reg: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + clocks: + items: + - description: System clock + - description: AHB clock needed for register interface access + + clock-names: + items: + - const: sys + - const: ahb + + '#clock-cells': + const: 1 + description: See include/dt-bindings/net/qcom,ipq9574-pcs.h for constants + +patternProperties: + '^pcs-mii@[0-4]$': + type: object + description: PCS MII interface. + + properties: + reg: + minimum: 0 + maximum: 4 + description: MII index + + clocks: + items: + - description: PCS MII RX clock + - description: PCS MII TX clock + + clock-names: + items: + - const: rx + - const: tx + + required: + - reg + - clocks + - clock-names + + additionalProperties: false + +required: + - compatible + - reg + - '#address-cells' + - '#size-cells' + - clocks + - clock-names + - '#clock-cells' + +additionalProperties: false + +examples: + - | + #include + + ethernet-pcs@7a00000 { + compatible = "qcom,ipq9574-pcs"; + reg = <0x7a00000 0x10000>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&gcc GCC_UNIPHY0_SYS_CLK>, + <&gcc GCC_UNIPHY0_AHB_CLK>; + clock-names = "sys", + "ahb"; + #clock-cells = <1>; + + pcs-mii@0 { + reg = <0>; + clocks = <&nsscc 116>, + <&nsscc 117>; + clock-names = "rx", + "tx"; + }; + + pcs-mii@1 { + reg = <1>; + clocks = <&nsscc 118>, + <&nsscc 119>; + clock-names = "rx", + "tx"; + }; + + pcs-mii@2 { + reg = <2>; + clocks = <&nsscc 120>, + <&nsscc 121>; + clock-names = "rx", + "tx"; + }; + + pcs-mii@3 { + reg = <3>; + clocks = <&nsscc 122>, + <&nsscc 123>; + clock-names = "rx", + "tx"; + }; + }; diff --git a/include/dt-bindings/net/qcom,ipq9574-pcs.h b/include/dt-bindings/net/qcom,ipq9574-pcs.h new file mode 100644 index 000000000000..96bd036aaa70 --- /dev/null +++ b/include/dt-bindings/net/qcom,ipq9574-pcs.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. + * + * Device Tree constants for the Qualcomm IPQ9574 PCS + */ + +#ifndef _DT_BINDINGS_PCS_QCOM_IPQ9574_H +#define _DT_BINDINGS_PCS_QCOM_IPQ9574_H + +/* The RX and TX clocks which are provided from the SerDes to NSSCC. */ +#define PCS_RX_CLK 0 +#define PCS_TX_CLK 1 + +#endif /* _DT_BINDINGS_PCS_QCOM_IPQ9574_H */