soc/qcom/qcom%2Csmp2p.yaml

1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Qualcomm Shared Memory Point 2 Point
10   - Andy Gross <agross@kernel.org>
11   - Bjorn Andersson <bjorn.andersson@linaro.org>
12   - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
15   The Shared Memory Point to Point (SMP2P) protocol facilitates communication
16   of a single 32-bit value between two processors.  Each value has a single
35     $ref: /schemas/types.yaml#/definitions/phandle-array
37       - items:
38           - description: phandle to a syscon node representing the APCS registers
39           - description: u32 representing offset to the register within the syscon
40           - description: u32 representing the ipc bit within the register
46   qcom,local-pid:
51   qcom,remote-pid:
57     $ref: /schemas/types.yaml#/definitions/uint32-array
64   "^master-kernel|slave-kernel|ipa-ap-to-modem|ipa-modem-to-ap|wlan-ap-to-wpss|wlan-wpss-to-ap$":
72       interrupt-controller:
75           cell interrupt-controller.  If not specified this node will denote
78       '#interrupt-cells':
81       qcom,entry-name:
88       '#qcom,smem-state-cells':
95       - qcom,entry-name
98       - required:
99           - interrupt-controller
100           - '#interrupt-cells'
101       - required:
102           - '#qcom,smem-state-cells'
107   - compatible
108   - interrupts
109   - qcom,local-pid
110   - qcom,remote-pid
111   - qcom,smem
114   - required:
115       - mboxes
116   - required:
117       - qcom,ipc
123   # defined from the 8974 apps processor's point-of-view. It encompasses one
125   - |
126     #include <dt-bindings/interrupt-controller/arm-gic.h>
128     shared-memory {
133         qcom,local-pid = <0>;
134         qcom,remote-pid = <4>;
136         wcnss_smp2p_out: master-kernel {
137             qcom,entry-name = "master-kernel";
138             #qcom,smem-state-cells = <1>;
141         wcnss_smp2p_in: slave-kernel {
142             qcom,entry-name = "slave-kernel";
143             interrupt-controller;
144             #interrupt-cells = <2>;