From patchwork Wed Nov 6 22:13:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mayank Rana X-Patchwork-Id: 13865574 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 D6EDA20E024; Wed, 6 Nov 2024 22:14:18 +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=1730931260; cv=none; b=NIDGLL43CdhpGQlO8pxPLT4Vmzm7YgMAO1Kpwql72dcPmgkL1UFNaJYEnCUSDiMzGY3+3wqkr5Rf9WwdyaS13ukA6Xw5k5gGa4PUjpU73PZ2CiGm79obvdSaKiQdg5sp4/a/rz/43RxwXKS+IZ1zPMOybbICx8QaeFJH+3nYopw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730931260; c=relaxed/simple; bh=U1E/PezRK3mMBWpMpVz/1ucpQWl6Z7F3QZxkC8Xgi5A=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=kGGdxiBJm8uymyfpW1bEbrF6m+ueOqKcFuqQ9ty1Ky+UG8qjb+2OlxeIgPz6D8Dp8Q97idcKPFvp2tOaannjh0WCG3ghza0XD02UFgikJLCt1iny/ZXuzj5NVH41FOBWdqBLyarWX1DeMe53NSk+7WEmbDmO6a5IQHw7ad5nXcE= 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=h2DjztTd; 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="h2DjztTd" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4A6AekBn002679; Wed, 6 Nov 2024 22:14:06 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= MkSO+TBW1zgiT3/tc5z3LLX3s+rIQIg7Fh/Fgi6sldE=; b=h2DjztTdFcjJn3fB wXxLjgBn3/DiqinPwrt4IcEYaHZ+8FbffJ34IhsqAHLXoX2iuugos5raUP1VzFSO fITBQLP6lS890aBvWXfnP7zetzrv7wCE9x2Qgy/TBsaEFXPvLLb2wdnSUV3yOBIm dNHJcXf2XtzF78ekJDhvyJa4STRLjeYu5sVE/OJYOPFlfJu+WRUuzXapJgJ36GqR lFeaRK/LO6BX2VH89gijSpxLegTccD4SuepPO3gQIvfK/twWUtm0EzedRy/x7n2k DCFn84RsV6O18Vstoun37jC366/6QMguyPzuujt+s3W1ObXiB3Xd5JsmP0qJ22PO yxDXYw== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 42qvhd39pv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 Nov 2024 22:14:05 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4A6ME5iZ011723 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 6 Nov 2024 22:14:05 GMT Received: from hu-mrana-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 6 Nov 2024 14:14:05 -0800 From: Mayank Rana To: , , , , , , , CC: , , , , Mayank Rana Subject: [PATCH v3 3/4] dt-bindings: PCI: qcom,pcie-sa8255p: Document ECAM compliant PCIe root complex Date: Wed, 6 Nov 2024 14:13:40 -0800 Message-ID: <20241106221341.2218416-4-quic_mrana@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241106221341.2218416-1-quic_mrana@quicinc.com> References: <20241106221341.2218416-1-quic_mrana@quicinc.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: fTOlyan0p4NGzWp9R_Mp7f47Z_4IWwA7 X-Proofpoint-GUID: fTOlyan0p4NGzWp9R_Mp7f47Z_4IWwA7 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 mlxlogscore=999 suspectscore=0 adultscore=0 clxscore=1015 mlxscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 malwarescore=0 impostorscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411060170 On SA8255p, PCIe root complex is managed by firmware using power-domain based handling. This root complex is configured as ECAM compliant. Document required configuration to enable PCIe root complex. Signed-off-by: Mayank Rana --- .../bindings/pci/qcom,pcie-sa8255p.yaml | 103 ++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie-sa8255p.yaml diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-sa8255p.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-sa8255p.yaml new file mode 100644 index 000000000000..9b09c3923ba0 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-sa8255p.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/qcom,pcie-sa8255p.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm SA8255p based firmware managed and ECAM compliant PCIe Root Complex + +maintainers: + - Bjorn Andersson + - Manivannan Sadhasivam + +description: + Qualcomm SA8255p SoC PCIe root complex controller is based on the Synopsys + DesignWare PCIe IP which is managed by firmware, and configured in ECAM mode. + +properties: + compatible: + const: qcom,pcie-sa8255p + + reg: + description: + The Configuration Space base address and size, as accessed from the parent + bus. The base address corresponds to the first bus in the "bus-range" + property. If no "bus-range" is specified, this will be bus 0 (the + default). + maxItems: 1 + + ranges: + description: + As described in IEEE Std 1275-1994, but must provide at least a + definition of non-prefetchable memory. One or both of prefetchable Memory + may also be provided. + minItems: 1 + maxItems: 2 + + interrupts: + minItems: 8 + maxItems: 8 + + interrupt-names: + items: + - const: msi0 + - const: msi1 + - const: msi2 + - const: msi3 + - const: msi4 + - const: msi5 + - const: msi6 + - const: msi7 + + power-domains: + maxItems: 1 + + dma-coherent: true + iommu-map: true + +required: + - compatible + - reg + - ranges + - power-domains + +allOf: + - $ref: /schemas/pci/pci-host-bridge.yaml# + +unevaluatedProperties: false + +examples: + - | + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + pci@1c00000 { + compatible = "qcom,pcie-sa8255p"; + reg = <0x4 0x00000000 0 0x10000000>; + device_type = "pci"; + #address-cells = <3>; + #size-cells = <2>; + ranges = <0x02000000 0x0 0x40100000 0x0 0x40100000 0x0 0x1ff00000>, + <0x43000000 0x4 0x10100000 0x4 0x10100000 0x0 0x40000000>; + bus-range = <0x00 0xff>; + dma-coherent; + linux,pci-domain = <0>; + power-domains = <&scmi5_pd 0>; + iommu-map = <0x0 &pcie_smmu 0x0000 0x1>, + <0x100 &pcie_smmu 0x0001 0x1>; + interrupt-parent = <&intc>; + interrupts = , + , + , + , + , + , + , + ; + interrupt-names = "msi0", "msi1", "msi2", "msi3", + "msi4", "msi5", "msi6", "msi7"; + }; + };