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[73.185.129.58]) by smtp.gmail.com with ESMTPSA id d188sm4637830ywe.50.2020.02.28.14.42.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Feb 2020 14:42:13 -0800 (PST) From: Alex Elder To: Rob Herring , Mark Rutland , Arnd Bergmann , David Miller Cc: Bjorn Andersson , Andy Gross , Johannes Berg , Dan Williams , Evan Green , Eric Caruso , Susheel Yadav Yadagiri , Chaitanya Pratapa , Subash Abhinov Kasiviswanathan , Ohad Ben-Cohen , Siddharth Gupta , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring Subject: [PATCH 02/17] dt-bindings: soc: qcom: add IPA bindings Date: Fri, 28 Feb 2020 16:41:49 -0600 Message-Id: <20200228224204.17746-3-elder@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200228224204.17746-1-elder@linaro.org> References: <20200228224204.17746-1-elder@linaro.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the binding definitions for the "qcom,ipa" device tree node. Signed-off-by: Alex Elder Reviewed-by: Rob Herring --- NOTE: Rob, you signed off on this last year. I made a single change to it (which you suggested): the license is now dual GPL 2.0/BSD 2-clause. If you have any objection to including your sign-off please say so. -Alex .../devicetree/bindings/net/qcom,ipa.yaml | 192 ++++++++++++++++++ 1 file changed, 192 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/qcom,ipa.yaml diff --git a/Documentation/devicetree/bindings/net/qcom,ipa.yaml b/Documentation/devicetree/bindings/net/qcom,ipa.yaml new file mode 100644 index 000000000000..91d08f2c7791 --- /dev/null +++ b/Documentation/devicetree/bindings/net/qcom,ipa.yaml @@ -0,0 +1,192 @@ +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/qcom,ipa.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm IP Accelerator (IPA) + +maintainers: + - Alex Elder + +description: + This binding describes the Qualcomm IPA. The IPA is capable of offloading + certain network processing tasks (e.g. filtering, routing, and NAT) from + the main processor. + + The IPA sits between multiple independent "execution environments," + including the Application Processor (AP) and the modem. The IPA presents + a Generic Software Interface (GSI) to each execution environment. + The GSI is an integral part of the IPA, but it is logically isolated + and has a distinct interrupt and a separately-defined address space. + + See also soc/qcom/qcom,smp2p.txt and interconnect/interconnect.txt. + + - | + -------- --------- + | | | | + | AP +<---. .----+ Modem | + | +--. | | .->+ | + | | | | | | | | + -------- | | | | --------- + v | v | + --+-+---+-+-- + | GSI | + |-----------| + | | + | IPA | + | | + ------------- + +properties: + compatible: + const: "qcom,sdm845-ipa" + + reg: + items: + - description: IPA registers + - description: IPA shared memory + - description: GSI registers + + reg-names: + items: + - const: ipa-reg + - const: ipa-shared + - const: gsi + + clocks: + maxItems: 1 + + clock-names: + const: core + + interrupts: + items: + - description: IPA interrupt (hardware IRQ) + - description: GSI interrupt (hardware IRQ) + - description: Modem clock query interrupt (smp2p interrupt) + - description: Modem setup ready interrupt (smp2p interrupt) + + interrupt-names: + items: + - const: ipa + - const: gsi + - const: ipa-clock-query + - const: ipa-setup-ready + + interconnects: + items: + - description: Interconnect path between IPA and main memory + - description: Interconnect path between IPA and internal memory + - description: Interconnect path between IPA and the AP subsystem + + interconnect-names: + items: + - const: memory + - const: imem + - const: config + + qcom,smem-states: + $ref: /schemas/types.yaml#/definitions/phandle-array + description: State bits used in by the AP to signal the modem. + items: + - description: Whether the "ipa-clock-enabled" state bit is valid + - description: Whether the IPA clock is enabled (if valid) + + qcom,smem-state-names: + $ref: /schemas/types.yaml#/definitions/string-array + description: The names of the state bits used for SMP2P output + items: + - const: ipa-clock-enabled-valid + - const: ipa-clock-enabled + + modem-init: + type: boolean + description: + If present, it indicates that the modem is responsible for + performing early IPA initialization, including loading and + validating firwmare used by the GSI. + + modem-remoteproc: + $ref: /schemas/types.yaml#definitions/phandle + description: + This defines the phandle to the remoteproc node representing + the modem subsystem. This is requied so the IPA driver can + receive and act on notifications of modem up/down events. + + memory-region: + $ref: /schemas/types.yaml#/definitions/phandle-array + maxItems: 1 + description: + If present, a phandle for a reserved memory area that holds + the firmware passed to Trust Zone for authentication. Required + when Trust Zone (not the modem) performs early initialization. + +required: + - compatible + - reg + - clocks + - interrupts + - interconnects + - qcom,smem-states + - modem-remoteproc + +oneOf: + - required: + - modem-init + - required: + - memory-region + +examples: + - | + smp2p-mpss { + compatible = "qcom,smp2p"; + ipa_smp2p_out: ipa-ap-to-modem { + qcom,entry-name = "ipa"; + #qcom,smem-state-cells = <1>; + }; + + ipa_smp2p_in: ipa-modem-to-ap { + qcom,entry-name = "ipa"; + interrupt-controller; + #interrupt-cells = <2>; + }; + }; + ipa@1e40000 { + compatible = "qcom,sdm845-ipa"; + + modem-init; + modem-remoteproc = <&mss_pil>; + + reg = <0 0x1e40000 0 0x7000>, + <0 0x1e47000 0 0x2000>, + <0 0x1e04000 0 0x2c000>; + reg-names = "ipa-reg", + "ipa-shared"; + "gsi"; + + interrupts-extended = <&intc 0 311 IRQ_TYPE_EDGE_RISING>, + <&intc 0 432 IRQ_TYPE_LEVEL_HIGH>, + <&ipa_smp2p_in 0 IRQ_TYPE_EDGE_RISING>, + <&ipa_smp2p_in 1 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "ipa", + "gsi", + "ipa-clock-query", + "ipa-setup-ready"; + + clocks = <&rpmhcc RPMH_IPA_CLK>; + clock-names = "core"; + + interconnects = + <&rsc_hlos MASTER_IPA &rsc_hlos SLAVE_EBI1>, + <&rsc_hlos MASTER_IPA &rsc_hlos SLAVE_IMEM>, + <&rsc_hlos MASTER_APPSS_PROC &rsc_hlos SLAVE_IPA_CFG>; + interconnect-names = "memory", + "imem", + "config"; + + qcom,smem-states = <&ipa_smp2p_out 0>, + <&ipa_smp2p_out 1>; + qcom,smem-state-names = "ipa-clock-enabled-valid", + "ipa-clock-enabled"; + };