Merge tag 'devicetree-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:

 - Refine reserved memory nomap handling

 - Merge some PCI and non-PCI address handling implementations

 - Simplify of_address.h header ifdefs

 - Improve printk handling of some 64-bit types

 - Convert adi,adv7511, Arm ccree, Arm SCMI, Arm SCU, Arm TWD timer, Arm
   VIC, arm,sbsa-gwdt, Arm/Amlogic SCPI, Aspeed I2C, Broadcom iProc PWM,
   linaro,optee-tz, MDIO GPIO, Mediatek RNG, MTD physmap, NXP
   pcf8563/pcf85263/pcf85363, Renesas TPU, renesas,emev2-smu,
   renesas,r9a06g032-sysctrl, sysc-rmobile, Tegra20 EMC, TI AM56 PCI, TI
   OMAP mailbox, TI SCI bindings, virtio-mmio, Zynq FPGA, and ZynqMP RTC
   to DT schema

 - Convert mux and mux controller bindings to schema. This includes MDIO
   IIO, and I2C muxes.

 - Add Arm PL031 RTC binding schema

 - Add vendor prefixes for StarFive Technology Co. Ltd. and Insignal Ltd

 - Fix some stale doc references

 - Remove stale property-units.txt. Superseded by schema in dt-schema
   repo.

 - Fixes for 'unevaluatedProperties' handling (enabled with experimental
   json-schema support)

 - Drop redundant usage of minItems and maxItems across the tree

 - Update some examples to use bindings with a schema

* tag 'devicetree-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (83 commits)
  dt-bindings: Fix 'unevaluatedProperties' errors in DT graph users
  dt-bindings: display: renesas,du: Fix 'ports' reference
  dt-bindings: media: adv7180: Add missing video-interfaces.yaml reference
  dt-bindings: crypto: ccree: Convert to json-schema
  dt-bindings: fpga: zynq: convert bindings to YAML
  dt-bindings: rtc: zynqmp: convert bindings to YAML
  dt-bindings: interrupt-controller: Convert ARM VIC to json-schema
  of: of_reserved_mem: mark nomap memory instead of removing
  of: of_reserved_mem: only call memblock_free for normal reserved memory
  dt-bindings: Drop redundant minItems/maxItems
  dt-bindings: spmi: Correct 'reg' schema
  of: reserved-memory: Add stub for RESERVEDMEM_OF_DECLARE()
  dt-bindings: clk: vc5: Fix example
  dt-bindings: timer: renesas,tmu: add r8a779a0 TMU support
  dt-bindings: drm: bridge: adi,adv7511.txt: convert to yaml
  dt-bindings: PCI: ti,am65: Convert PCIe host/endpoint mode dt-bindings to YAML
  of: Remove superfluous casts when printing u64 values
  of: Fix truncation of memory sizes on 32-bit platforms
  dt-bindings: rtc: nxp,pcf8563: Absorb pcf85263/pcf85363 bindings
  dt-bindings: pwm: Use examples with documented/matching schema
  ...

2 files changed, 588 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
new file mode 100644
index 000000000000..cebf6ffe70d5
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -0,0 +1,341 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2021 ARM Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/arm,scmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: System Control and Management Interface (SCMI) Message Protocol bindings
+
+maintainers:
+  - Sudeep Holla <sudeep.holla@arm.com>
+
+description: |
+  The SCMI is intended to allow agents such as OSPM to manage various functions
+  that are provided by the hardware platform it is running on, including power
+  and performance functions.
+
+  This binding is intended to define the interface the firmware implementing
+  the SCMI as described in ARM document number ARM DEN 0056 ("ARM System Control
+  and Management Interface Platform Design Document")[0] provide for OSPM in
+  the device tree.
+
+  [0] https://developer.arm.com/documentation/den0056/latest
+
+properties:
+  $nodename:
+    const: scmi
+
+  compatible:
+    oneOf:
+      - description: SCMI compliant firmware with mailbox transport
+        items:
+          - const: arm,scmi
+      - description: SCMI compliant firmware with ARM SMC/HVC transport
+        items:
+          - const: arm,scmi-smc
+
+  interrupts:
+    description:
+      The interrupt that indicates message completion by the platform
+      rather than by the return of the smc call. This should not be used
+      except when the platform requires such behavior.
+    maxItems: 1
+
+  interrupt-names:
+    const: a2p
+
+  mbox-names:
+    description:
+      Specifies the mailboxes used to communicate with SCMI compliant
+      firmware.
+    items:
+      - const: tx
+      - const: rx
+
+  mboxes:
+    description:
+      List of phandle and mailbox channel specifiers. It should contain
+      exactly one or two mailboxes, one for transmitting messages("tx")
+      and another optional for receiving the notifications("rx") if supported.
+    minItems: 1
+    maxItems: 2
+
+  shmem:
+    description:
+      List of phandle pointing to the shared memory(SHM) area, for each
+      transport channel specified.
+    minItems: 1
+    maxItems: 2
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  arm,smc-id:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      SMC id required when using smc or hvc transports
+
+  protocol@11:
+    type: object
+    properties:
+      reg:
+        const: 0x11
+
+      '#power-domain-cells':
+        const: 1
+
+    required:
+      - '#power-domain-cells'
+
+  protocol@13:
+    type: object
+    properties:
+      reg:
+        const: 0x13
+
+      '#clock-cells':
+        const: 1
+
+    required:
+      - '#clock-cells'
+
+  protocol@14:
+    type: object
+    properties:
+      reg:
+        const: 0x14
+
+      '#clock-cells':
+        const: 1
+
+    required:
+      - '#clock-cells'
+
+  protocol@15:
+    type: object
+    properties:
+      reg:
+        const: 0x15
+
+      '#thermal-sensor-cells':
+        const: 1
+
+    required:
+      - '#thermal-sensor-cells'
+
+  protocol@16:
+    type: object
+    properties:
+      reg:
+        const: 0x16
+
+      '#reset-cells':
+        const: 1
+
+    required:
+      - '#reset-cells'
+
+  protocol@17:
+    type: object
+    properties:
+      reg:
+        const: 0x17
+
+      regulators:
+        type: object
+        description:
+          The list of all regulators provided by this SCMI controller.
+
+        patternProperties:
+          '^regulators@[0-9a-f]+$':
+            type: object
+            $ref: "../regulator/regulator.yaml#"
+
+            properties:
+              reg:
+                maxItems: 1
+                description: Identifier for the voltage regulator.
+
+            required:
+              - reg
+
+additionalProperties: false
+
+patternProperties:
+  '^protocol@[0-9a-f]+$':
+    type: object
+    description:
+      Each sub-node represents a protocol supported. If the platform
+      supports a dedicated communication channel for a particular protocol,
+      then the corresponding transport properties must be present.
+
+    properties:
+      reg:
+        maxItems: 1
+
+      mbox-names:
+        items:
+          - const: tx
+          - const: rx
+
+      mboxes:
+        minItems: 1
+        maxItems: 2
+
+      shmem:
+        minItems: 1
+        maxItems: 2
+
+    required:
+      - reg
+
+required:
+  - compatible
+  - shmem
+
+if:
+  properties:
+    compatible:
+      contains:
+        const: arm,scmi
+then:
+  properties:
+    interrupts: false
+    interrupt-names: false
+
+  required:
+    - mboxes
+
+else:
+  if:
+    properties:
+      compatible:
+        contains:
+          const: arm,scmi-smc
+  then:
+    required:
+      - arm,smc-id
+
+examples:
+  - |
+    firmware {
+        scmi {
+            compatible = "arm,scmi";
+            mboxes = <&mhuB 0 0>,
+                     <&mhuB 0 1>;
+            mbox-names = "tx", "rx";
+            shmem = <&cpu_scp_lpri0>,
+                    <&cpu_scp_lpri1>;
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            scmi_devpd: protocol@11 {
+                reg = <0x11>;
+                #power-domain-cells = <1>;
+            };
+
+            scmi_dvfs: protocol@13 {
+                reg = <0x13>;
+                #clock-cells = <1>;
+
+                mboxes = <&mhuB 1 0>,
+                         <&mhuB 1 1>;
+                mbox-names = "tx", "rx";
+                shmem = <&cpu_scp_hpri0>,
+                        <&cpu_scp_hpri1>;
+            };
+
+            scmi_clk: protocol@14 {
+                reg = <0x14>;
+                #clock-cells = <1>;
+            };
+
+            scmi_sensors: protocol@15 {
+                reg = <0x15>;
+                #thermal-sensor-cells = <1>;
+            };
+
+            scmi_reset: protocol@16 {
+                reg = <0x16>;
+                #reset-cells = <1>;
+            };
+
+            scmi_voltage: protocol@17 {
+                reg = <0x17>;
+                regulators {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    regulator_devX: regulator@0 {
+                        reg = <0x0>;
+                        regulator-max-microvolt = <3300000>;
+                    };
+
+                    regulator_devY: regulator@9 {
+                        reg = <0x9>;
+                        regulator-min-microvolt = <500000>;
+                        regulator-max-microvolt = <4200000>;
+                    };
+                };
+            };
+        };
+    };
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        sram@50000000 {
+            compatible = "mmio-sram";
+            reg = <0x0 0x50000000 0x0 0x10000>;
+
+            #address-cells = <1>;
+            #size-cells = <1>;
+            ranges = <0 0x0 0x50000000 0x10000>;
+
+            cpu_scp_lpri0: scp-sram-section@0 {
+                compatible = "arm,scmi-shmem";
+                reg = <0x0 0x80>;
+            };
+
+            cpu_scp_lpri1: scp-sram-section@80 {
+                compatible = "arm,scmi-shmem";
+                reg = <0x80 0x80>;
+            };
+
+            cpu_scp_hpri0: scp-sram-section@100 {
+                compatible = "arm,scmi-shmem";
+                reg = <0x100 0x80>;
+            };
+
+            cpu_scp_hpri2: scp-sram-section@180 {
+                compatible = "arm,scmi-shmem";
+                reg = <0x180 0x80>;
+            };
+        };
+    };
+
+  - |
+    firmware {
+        scmi {
+            compatible = "arm,scmi-smc";
+            shmem = <&cpu_scp_lpri0 &cpu_scp_lpri1>;
+            arm,smc-id = <0xc3000001>;
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            scmi_devpd1: protocol@11 {
+                reg = <0x11>;
+                #power-domain-cells = <1>;
+            };
+
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/firmware/arm,scpi.yaml b/Documentation/devicetree/bindings/firmware/arm,scpi.yaml
new file mode 100644
index 000000000000..d7113b06454b
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/arm,scpi.yaml
@@ -0,0 +1,247 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2021 ARM Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/arm,scpi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: System Control and Power Interface (SCPI) Message Protocol bindings
+
+maintainers:
+  - Sudeep Holla <sudeep.holla@arm.com>
+
+description: |
+  Firmware implementing the SCPI described in ARM document number ARM DUI
+  0922B ("ARM Compute Subsystem SCP: Message Interface Protocols")[0] can be
+  used by Linux to initiate various system control and power operations.
+
+  This binding is intended to define the interface the firmware implementing
+  the SCPI provide for OSPM in the device tree.
+
+  [0] http://infocenter.arm.com/help/topic/com.arm.doc.dui0922b/index.html
+
+properties:
+  $nodename:
+    const: scpi
+
+  compatible:
+    description:
+      SCPI compliant firmware complying to SCPI v1.0 and above OR
+      SCPI compliant firmware complying to all unversioned releases
+      prior to SCPI v1.0
+    oneOf:
+      - const: arm,scpi               # SCPI v1.0 and above
+      - const: arm,scpi-pre-1.0       # Unversioned SCPI before v1.0
+      - items:
+          - enum:
+              - amlogic,meson-gxbb-scpi
+          - const: arm,scpi-pre-1.0
+
+  mboxes:
+    description:
+      List of phandle and mailbox channel specifiers. All the channels reserved
+      by remote SCP firmware for use by SCPI message protocol should be
+      specified in any order.
+    minItems: 1
+
+  shmem:
+    description:
+      List of phandle pointing to the shared memory(SHM) area between the
+      processors using these mailboxes for IPC, one for each mailbox SHM can
+      be any memory reserved for the purpose of this communication between the
+      processors.
+    minItems: 1
+
+  power-controller:
+    type: object
+    description:
+      This sub-node represents SCPI power domain controller.
+
+    properties:
+      compatible:
+        const: arm,scpi-power-domains
+
+      '#power-domain-cells':
+        const: 1
+
+      num-domains:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description:
+          Total number of power domains provided by SCPI. This is needed as
+          the SCPI message protocol lacks a mechanism to query this
+          information at runtime.
+
+    required:
+      - compatible
+      - '#power-domain-cells'
+      - num-domains
+
+    additionalProperties: false
+
+  sensors:
+    type: object
+    description: |
+      This sub-node represents SCPI sensors controller.
+
+    properties:
+      compatible:
+        oneOf:
+          - const: arm,scpi-sensors
+          - items:
+              - enum:
+                  - amlogic,meson-gxbb-scpi-sensors
+              - const: arm,scpi-sensors
+
+      '#thermal-sensor-cells':
+        const: 1
+
+    required:
+      - compatible
+      - '#thermal-sensor-cells'
+
+    additionalProperties: false
+
+  clocks:
+    type: object
+    description:
+      This is the container node. Each sub-node represents one of the types
+      of clock controller - indexed or full range.
+
+    properties:
+      compatible:
+        const: arm,scpi-clocks
+
+    patternProperties:
+      "^clocks-[0-9a-f]+$":
+        type: object
+        description: |
+          This sub-node represents one of the types of clock controller
+          - indexed or full range.
+
+          "arm,scpi-dvfs-clocks" - all the clocks that are variable and index
+          based. These clocks don't provide an entire range of values between
+          the limits but only discrete points within the range. The firmware
+          provides the mapping for each such operating frequency and the index
+          associated with it. The firmware also manages the voltage scaling
+          appropriately with the clock scaling.
+
+          "arm,scpi-variable-clocks" - all the clocks that are variable and
+          provide full range within the specified range. The firmware provides
+          the range of values within a specified range.
+
+        properties:
+          compatible:
+            oneOf:
+              - const: arm,scpi-dvfs-clocks
+              - const: arm,scpi-variable-clocks
+
+          '#clock-cells':
+            const: 1
+
+          clock-output-names: true
+
+          clock-indices:
+            $ref: /schemas/types.yaml#/definitions/uint32-array
+            description:
+              The identifying number for the clocks(i.e.clock_id) in the node.
+              It can be non linear and hence provide the mapping of identifiers
+              into the clock-output-names array.
+
+        required:
+          - compatible
+          - '#clock-cells'
+          - clock-output-names
+          - clock-indices
+
+        additionalProperties: false
+
+    required:
+      - compatible
+
+    additionalProperties: false
+
+additionalProperties: false
+
+required:
+  - compatible
+  - mboxes
+  - shmem
+
+examples:
+  - |
+    firmware {
+        scpi {
+            compatible = "arm,scpi";
+            mboxes = <&mhuA 1>;
+            shmem = <&cpu_scp_hpri>; /* HP-NonSecure */
+
+            scpi_devpd: power-controller {
+                compatible = "arm,scpi-power-domains";
+                num-domains = <2>;
+                #power-domain-cells = <1>;
+            };
+
+            clocks {
+                compatible = "arm,scpi-clocks";
+
+                scpi_dvfs: clocks-0 {
+                    compatible = "arm,scpi-dvfs-clocks";
+                    #clock-cells = <1>;
+                    clock-indices = <0>, <1>, <2>;
+                    clock-output-names = "atlclk", "aplclk","gpuclk";
+                };
+
+                scpi_clk: clocks-1 {
+                    compatible = "arm,scpi-variable-clocks";
+                    #clock-cells = <1>;
+                    clock-indices = <3>, <4>;
+                    clock-output-names = "pxlclk0", "pxlclk1";
+                };
+            };
+
+            scpi_sensors: sensors {
+                compatible = "arm,scpi-sensors";
+                #thermal-sensor-cells = <1>;
+            };
+
+        };
+    };
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        sram@50000000 {
+            compatible = "mmio-sram";
+            reg = <0x0 0x50000000 0x0 0x10000>;
+
+            #address-cells = <1>;
+            #size-cells = <1>;
+            ranges = <0 0x0 0x50000000 0x10000>;
+
+            cpu_scp_lpri: scp-sram-section@0 {
+                compatible = "arm,scp-shmem";
+                reg = <0x0 0x200>;
+            };
+
+            cpu_scp_hpri: scp-sram-section@200 {
+                compatible = "arm,scp-shmem";
+                reg = <0x200 0x200>;
+            };
+        };
+    };
+
+  - |
+    firmware {
+        scpi {
+            compatible = "amlogic,meson-gxbb-scpi", "arm,scpi-pre-1.0";
+            mboxes = <&mailbox 1 &mailbox 2>;
+            shmem = <&cpu_scp_lpri &cpu_scp_hpri>;
+
+            scpi_sensors1: sensors {
+                compatible = "amlogic,meson-gxbb-scpi-sensors", "arm,scpi-sensors";
+                #thermal-sensor-cells = <1>;
+            };
+        };
+    };
+...