pmdomain: Merge branch dt into next

Merge the immutable branch dt into next, to allow the updated DT bindings
to be tested together with the pmdomain changes that are targeted for the
next release.

Signed-off-by: Ulf Hansson <ulfh@kernel.org>

Documentation/devicetree/bindings/power/riscv,rpmi-device-power.yaml

@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/riscv,rpmi-device-power.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RISC-V RPMI device power service group based power domain controller
+
+maintainers:
+  - Joshua Yeong <joshua.yeong@starfivetech.com>
+
+description: |
+  The RISC-V Platform Management Interface (RPMI) [1] defines a
+  messaging protocol which is modular and extensible. The supervisor
+  software can send/receive RPMI messages via SBI MPXY extension [2]
+  or some dedicated supervisor-mode RPMI transport.
+
+  The RPMI specification [1] defines device power service group for
+  accessing and controlling the power state of platform devices managed
+  by a platform microcontroller. The supervisor software can access RPMI
+  device power service group via SBI MPXY channel or some dedicated
+  supervisor-mode RPMI transport.
+
+  ===========================================
+  References
+  ===========================================
+
+  [1] RISC-V Platform Management Interface (RPMI) v1.0 (or higher)
+      https://github.com/riscv-non-isa/riscv-rpmi/releases
+
+  [2] RISC-V Supervisor Binary Interface (SBI) v3.0 (or higher)
+      https://github.com/riscv-non-isa/riscv-sbi-doc/releases
+
+properties:
+  compatible:
+    description:
+      Intended for use by the supervisor software.
+    const: riscv,rpmi-device-power
+
+  mboxes:
+    maxItems: 1
+    description:
+      Mailbox channel of the underlying RPMI transport or SBI message proxy channel.
+
+  "#power-domain-cells":
+    const: 1
+    description:
+      Platform specific DOMAIN_ID as defined by the RISC-V Platform Management
+      Interface (RPMI) specification.
+
+required:
+  - compatible
+  - mboxes
+  - "#power-domain-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    power-controller {
+        compatible = "riscv,rpmi-device-power";
+        mboxes = <&mpxy_mbox 0x1002 0x0>;
+        #power-domain-cells = <1>;
+    };
+...

Documentation/devicetree/bindings/power/riscv,rpmi-mpxy-device-power.yaml

@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/riscv,rpmi-mpxy-device-power.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RISC-V RPMI device power service group based message proxy
+
+maintainers:
+  - Joshua Yeong <joshua.yeong@starfivetech.com>
+
+description: |
+  The RISC-V Platform Management Interface (RPMI) [1] defines a
+  messaging protocol which is modular and extensible. The supervisor
+  software can send/receive RPMI messages via SBI MPXY extension [2]
+  or some dedicated supervisor-mode RPMI transport.
+
+  The RPMI specification [1] defines device power service group for
+  accessing and controlling the power state of platform devices managed
+  by a platform microcontroller. The SBI implementation (machine mode
+  firmware or hypervisor) can implement an SBI MPXY channel to allow RPMI
+  device power service group access to the supervisor software.
+
+  ===========================================
+  References
+  ===========================================
+
+  [1] RISC-V Platform Management Interface (RPMI) v1.0 (or higher)
+      https://github.com/riscv-non-isa/riscv-rpmi/releases
+
+  [2] RISC-V Supervisor Binary Interface (SBI) v3.0 (or higher)
+      https://github.com/riscv-non-isa/riscv-sbi-doc/releases
+
+properties:
+  compatible:
+    description:
+      Intended for use by the SBI implementation.
+    const: riscv,rpmi-mpxy-device-power
+
+  mboxes:
+    maxItems: 1
+    description:
+      Mailbox channel of the underlying RPMI transport.
+
+  riscv,sbi-mpxy-channel-id:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The SBI MPXY channel id to be used for providing RPMI access to
+      the supervisor software.
+
+required:
+  - compatible
+  - mboxes
+  - riscv,sbi-mpxy-channel-id
+
+additionalProperties: false
+
+examples:
+  - |
+    device-power-service {
+        compatible = "riscv,rpmi-mpxy-device-power";
+        mboxes = <&rpmi_shmem_mbox 0x9>;
+        riscv,sbi-mpxy-channel-id = <0x1002>;
+    };
+...