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Thu, 19 Oct 2023 02:19:42 +0000 Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 39J2Jep2027375 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 19 Oct 2023 02:19:40 GMT Received: from hu-c-gdjako-lv.qualcomm.com (10.49.16.6) 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 15.2.1118.39; Wed, 18 Oct 2023 19:19:40 -0700 From: Georgi Djakov To: , , , , , CC: , , , , , , , , , , , Subject: [PATCH 1/6] dt-bindings: iommu: Add Translation Buffer Unit bindings Date: Wed, 18 Oct 2023 19:19:18 -0700 Message-ID: <20231019021923.13939-2-quic_c_gdjako@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231019021923.13939-1-quic_c_gdjako@quicinc.com> References: <20231019021923.13939-1-quic_c_gdjako@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) 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: Ajg6GGsAZFcHJohQqndeTSociNDKdG33 X-Proofpoint-ORIG-GUID: Ajg6GGsAZFcHJohQqndeTSociNDKdG33 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-19_02,2023-10-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 mlxlogscore=999 lowpriorityscore=0 phishscore=0 impostorscore=0 suspectscore=0 mlxscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310190017 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Wed, 18 Oct 2023 19:20:25 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780148628694455085 X-GMAIL-MSGID: 1780148628694455085 The "apps_smmu" on the Qualcomm sdm845 platform is an implementation of the ARM SMMU-500, that consists of a single TCU (Translation Control Unit) and multiple TBUs (Translation Buffer Units). The TCU is already being described in the ARM SMMU DT schema. Add also bindings for the TBUs so that we can describe their properties. In this DT schema, the TBUs are modelled as a child devices of the TCU and each of them is described with it's own resources such as clocks, power domains, interconnects etc. Signed-off-by: Georgi Djakov --- .../devicetree/bindings/iommu/arm,smmu.yaml | 13 ++++ .../bindings/iommu/qcom,qsmmuv500-tbu.yaml | 67 +++++++++++++++++++ 2 files changed, 80 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/qcom,qsmmuv500-tbu.yaml diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml index cf29ab10501c..afc323b4bbc5 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml @@ -230,6 +230,19 @@ properties: enabled for any given device. $ref: /schemas/types.yaml#/definitions/phandle + '#address-cells': + const: 2 + + '#size-cells': + const: 2 + + ranges: true + +patternProperties: + "^tbu@[0-9a-f]+$": + $ref: qcom,qsmmuv500-tbu.yaml + description: The SMMU may include Translation Buffer Units (TBU) as subnodes + required: - compatible - reg diff --git a/Documentation/devicetree/bindings/iommu/qcom,qsmmuv500-tbu.yaml b/Documentation/devicetree/bindings/iommu/qcom,qsmmuv500-tbu.yaml new file mode 100644 index 000000000000..4baba7397e90 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/qcom,qsmmuv500-tbu.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/qcom,qsmmuv500-tbu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm TBU (Translation Buffer Unit) + +maintainers: + - Georgi Djakov + +description: + TBU nodes represent Translation Buffer Units in an ARM SMMU. Each TBU node + should be a child node of the SMMU in the device tree. + +properties: + compatible: + enum: + - qcom,qsmmuv500-tbu + + reg: + items: + - description: Address and size of the TBU's register space. + + reg-names: + items: + - const: base + + clocks: + maxItems: 1 + + interconnects: + maxItems: 1 + + power-domains: + maxItems: 1 + + qcom,stream-id-range: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: Stream ID range (address and size) that is assigned by the TBU + +required: + - compatible + - reg + - interconnects + - qcom,stream-id-range + +additionalProperties: false + +examples: + - | + #include + #include + #include + + + tbu@150e1000 { + compatible = "qcom,qsmmuv500-tbu"; + reg = <0x150e1000 0x1000>; + reg-names = "base"; + clocks = <&gcc GCC_AGGRE_NOC_PCIE_TBU_CLK>; + power-domains = <&gcc HLOS1_VOTE_AGGRE_NOC_MMU_PCIE_TBU_GDSC>; + interconnects = <&system_noc MASTER_GNOC_SNOC 0 &config_noc SLAVE_IMEM_CFG 0>; + qcom,stream-id-range = <0x1c00 0x400>; + }; + +...