[PATCH 0/7] dt-bindings: Convert the ARM Boards to YAML

[PATCH 0/7] dt-bindings: Convert the ARM Boards to YAML

[Linus Walleij]

This converts the ARM reference designs to use YAML schema
to verify the top-level and in some cases some basic nodes
in the device tree as well.

Rob requested me to get this done: let's get it done.

Rob: when you're happy I can merge this through ARM SoC so the
minor cleanups go in first, unless you prefer another
merge path.

Linus Walleij (7):
  ARM: dts: Versatile: Use syscon as node name for IB2
  ARM: dts: RealView: Fix the name of the SoC node
  dt-bindings: arm: Add Integrator YAML schema
  dt-bindings: arm: Add Versatile YAML schema
  dt-bindings: arm: Add RealView YAML schema
  dt-bindings: arm: Add Versatile Express and Juno YAML schema
  dt-bindings: arm: Drop the non-YAML bindings

 .../bindings/arm/arm,integrator.yaml          |  85 +++++++
 .../devicetree/bindings/arm/arm,realview.yaml | 123 +++++++++
 .../bindings/arm/arm,versatile.yaml           |  69 +++++
 .../bindings/arm/arm,vexpress-juno.yaml       | 118 +++++++++
 .../devicetree/bindings/arm/arm-boards        | 237 ------------------
 .../devicetree/bindings/arm/vexpress.txt      | 229 -----------------
 arch/arm/boot/dts/arm-realview-pbx.dtsi       |   2 +-
 arch/arm/boot/dts/versatile-ab-ib2.dts        |   2 +-
 8 files changed, 397 insertions(+), 468 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/arm,integrator.yaml
 create mode 100644 Documentation/devicetree/bindings/arm/arm,realview.yaml
 create mode 100644 Documentation/devicetree/bindings/arm/arm,versatile.yaml
 create mode 100644 Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
 delete mode 100644 Documentation/devicetree/bindings/arm/arm-boards
 delete mode 100644 Documentation/devicetree/bindings/arm/vexpress.txt

-- 
2.23.0

[PATCH 1/7] ARM: dts: Versatile: Use syscon as node name for IB2

[Linus Walleij]

The IB2 syscon should not have any funny names, just call
it syscon@ as per the convention so the schema will apply
properly.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 arch/arm/boot/dts/versatile-ab-ib2.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/versatile-ab-ib2.dts b/arch/arm/boot/dts/versatile-ab-ib2.dts
index 5890cb974f78..c577ff4bb4be 100644
--- a/arch/arm/boot/dts/versatile-ab-ib2.dts
+++ b/arch/arm/boot/dts/versatile-ab-ib2.dts
@@ -10,7 +10,7 @@
 	model = "ARM Versatile AB + IB2 board";
 
 	/* Special IB2 control register */
-	ib2_syscon@27000000 {
+	syscon@27000000 {
 		compatible = "arm,versatile-ib2-syscon", "syscon", "simple-mfd";
 		reg = <0x27000000 0x4>;
 
-- 
2.23.0

[PATCH 2/7] ARM: dts: RealView: Fix the name of the SoC node

[Linus Walleij]

Drop the surplus @0 on the soc node making the devicetree
conform strictly to the schema.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 arch/arm/boot/dts/arm-realview-pbx.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/arm-realview-pbx.dtsi b/arch/arm/boot/dts/arm-realview-pbx.dtsi
index 09f3f544f3a7..f61bd59ae5ba 100644
--- a/arch/arm/boot/dts/arm-realview-pbx.dtsi
+++ b/arch/arm/boot/dts/arm-realview-pbx.dtsi
@@ -210,7 +210,7 @@
 		};
 	};
 
-	soc: soc@0 {
+	soc: soc {
 		compatible = "arm,realview-pbx-soc", "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
-- 
2.23.0

[PATCH 3/7] dt-bindings: arm: Add Integrator YAML schema

[Linus Walleij]

This implements the top-level schema for the ARM Integrator
platforms.

Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 .../bindings/arm/arm,integrator.yaml          | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/arm,integrator.yaml

diff --git a/Documentation/devicetree/bindings/arm/arm,integrator.yaml b/Documentation/devicetree/bindings/arm/arm,integrator.yaml
new file mode 100644
index 000000000000..39aa3e31f934
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/arm,integrator.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/arm,integrator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Integrator Boards Device Tree Bindings
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: |+
+  These were the first ARM platforms officially supported by ARM Ltd.
+  They are ARMv4, ARMv5 and ARMv6-capable using different core tiles,
+  so the system is modular and can host a variety of CPU tiles called
+  "core tiles" and referred to in the device tree as "core modules".
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - description: ARM Integrator Application Platform, this board has a PCI
+          host and several PCI slots, as well as a number of slots for logical
+          expansion modules, it is referred to as an "ASIC Development
+          Motherboard" and is extended with custom FPGA and is intended for
+          rapid prototyping. See ARM DUI 0098B. This board can physically come
+          pre-packaged in a PC Tower form factor called Integrator/PP1 or a
+          special metal fixture called Integrator/PP2, see ARM DUI 0169A.
+        items:
+          - const: arm,integrator-ap
+      - description: ARM Integrator Compact Platform (HBI-0086), this board has
+          a compact form factor and mainly consists of the bare minimum
+          peripherals to make use of the core module. See ARM DUI 0159B.
+        items:
+          - const: arm,integrator-cp
+      - description: ARM Integrator Standard Development Board (SDB) Platform,
+          this board is a PCI-based board conforming to the Microsoft SDB
+          (HARP) specification. See ARM DUI 0099A.
+        items:
+          - const: arm,integrator-sp
+
+  syscon:
+    description: All Integrator boards must provide a system controller as a
+      node in the root of the device tree.
+    type: object
+    properties:
+      compatible:
+        oneOf:
+          - items:
+            - const: arm,integrator-ap-syscon
+            - const: syscon
+          - items:
+            - const: arm,integrator-cp-syscon
+            - const: syscon
+          - items:
+            - const: arm,integrator-sp-syscon
+            - const: syscon
+    required:
+      - compatible
+      - reg
+
+patternProperties:
+  "^core-module@[0-9a-f]+$":
+    type: object
+    description: the root node in the Integrator platforms must contain
+      a core module child node. They are always at physical address
+      0x10000000 in all the Integrator variants.
+    properties:
+      compatible:
+        contains:
+          const: arm,core-module-integrator
+        description: this node is the core module node, it can be compatible
+          with syscon and simple-bus as well
+
+    required:
+      - compatible
+      - reg
+
+required:
+  - compatible
+  - syscon
+  - core-module@10000000
+
+...
-- 
2.23.0

Re: [PATCH 3/7] dt-bindings: arm: Add Integrator YAML schema

[Rob Herring]

On Mon, Feb 10, 2020 at 3:27 AM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> This implements the top-level schema for the ARM Integrator
> platforms.
>
> Cc: Sudeep Holla <sudeep.holla@arm.com>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
>  .../bindings/arm/arm,integrator.yaml          | 85 +++++++++++++++++++
>  1 file changed, 85 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/arm,integrator.yaml
>
> diff --git a/Documentation/devicetree/bindings/arm/arm,integrator.yaml b/Documentation/devicetree/bindings/arm/arm,integrator.yaml
> new file mode 100644
> index 000000000000..39aa3e31f934
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/arm,integrator.yaml
> @@ -0,0 +1,85 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/arm,integrator.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ARM Integrator Boards Device Tree Bindings
> +
> +maintainers:
> +  - Linus Walleij <linus.walleij@linaro.org>
> +
> +description: |+
> +  These were the first ARM platforms officially supported by ARM Ltd.
> +  They are ARMv4, ARMv5 and ARMv6-capable using different core tiles,
> +  so the system is modular and can host a variety of CPU tiles called
> +  "core tiles" and referred to in the device tree as "core modules".
> +
> +properties:
> +  $nodename:
> +    const: '/'
> +  compatible:
> +    oneOf:
> +      - description: ARM Integrator Application Platform, this board has a PCI
> +          host and several PCI slots, as well as a number of slots for logical
> +          expansion modules, it is referred to as an "ASIC Development
> +          Motherboard" and is extended with custom FPGA and is intended for
> +          rapid prototyping. See ARM DUI 0098B. This board can physically come
> +          pre-packaged in a PC Tower form factor called Integrator/PP1 or a
> +          special metal fixture called Integrator/PP2, see ARM DUI 0169A.
> +        items:
> +          - const: arm,integrator-ap
> +      - description: ARM Integrator Compact Platform (HBI-0086), this board has
> +          a compact form factor and mainly consists of the bare minimum
> +          peripherals to make use of the core module. See ARM DUI 0159B.
> +        items:
> +          - const: arm,integrator-cp
> +      - description: ARM Integrator Standard Development Board (SDB) Platform,
> +          this board is a PCI-based board conforming to the Microsoft SDB
> +          (HARP) specification. See ARM DUI 0099A.
> +        items:
> +          - const: arm,integrator-sp
> +
> +  syscon:

Given there's a 'reg' property here, this should have a unit-address.

> +    description: All Integrator boards must provide a system controller as a
> +      node in the root of the device tree.
> +    type: object
> +    properties:
> +      compatible:
> +        oneOf:
> +          - items:
> +            - const: arm,integrator-ap-syscon
> +            - const: syscon
> +          - items:
> +            - const: arm,integrator-cp-syscon
> +            - const: syscon
> +          - items:
> +            - const: arm,integrator-sp-syscon
> +            - const: syscon

No need for oneOf:

items:
  - enum:
      - arm,integrator-ap-syscon
      - arm,integrator-cp-syscon
      - arm,integrator-sp-syscon
  - const: syscon

> +    required:
> +      - compatible
> +      - reg

'reg' should be listed as property too. How many entries?

> +
> +patternProperties:
> +  "^core-module@[0-9a-f]+$":
> +    type: object
> +    description: the root node in the Integrator platforms must contain
> +      a core module child node. They are always at physical address
> +      0x10000000 in all the Integrator variants.

Then do 'core-module@10000000' for the property name.

> +    properties:
> +      compatible:
> +        contains:
> +          const: arm,core-module-integrator
> +        description: this node is the core module node, it can be compatible
> +          with syscon and simple-bus as well

Those compatibles should be listed, too.

> +
> +    required:
> +      - compatible
> +      - reg
> +
> +required:
> +  - compatible
> +  - syscon
> +  - core-module@10000000
> +
> +...
> --
> 2.23.0
>

[PATCH 4/7] dt-bindings: arm: Add Versatile YAML schema

[Linus Walleij]

This implements the top-level schema for the ARM Versatile
platforms.

Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 .../bindings/arm/arm,versatile.yaml           | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/arm,versatile.yaml

diff --git a/Documentation/devicetree/bindings/arm/arm,versatile.yaml b/Documentation/devicetree/bindings/arm/arm,versatile.yaml
new file mode 100644
index 000000000000..81fd010643f4
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/arm,versatile.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/arm,versatile.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Versatile Boards Device Tree Bindings
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: |+
+  The ARM Versatile boards are two variants of ARM926EJ-S evaluation boards
+  with various pluggable interface boards, in essence the Versatile PB version
+  is a superset of the Versatile AB version.
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - description: The ARM Versatile Application Baseboard (HBI-0118) is an
+          evaluation board specifically for the ARM926EJ-S. It can be connected
+          to an IB1 interface board for a touchscreen-type use case or an IB2
+          for a candybar phone-type use case. See ARM DUI 0225D.
+        items:
+          - const: arm,versatile-ab
+      - description: The ARM Versatile Platform Baseboard (HBI-0117) is an
+          extension of the Versatile Application Baseboard that includes a
+          PCI host controller. Like the sibling board, it is done specifically
+          for ARM926EJ-S. See ARM DUI 0224B.
+        items:
+          - const: arm,versatile-pb
+
+patternProperties:
+  "^core-module@[0-9a-f]+$":
+    type: object
+    description: the root node in the Versatile platforms must contain
+      a core module child node. They are always at physical address
+      0x10000000 in all the Versatile variants.
+    properties:
+      compatible:
+        contains:
+          const: arm,core-module-versatile
+        description: this node is the core module node, it can be compatible
+          with syscon and simple-bus as well
+
+    required:
+      - compatible
+      - reg
+
+  "^syscon@[0-9a-f]+$":
+    type: object
+    description: When fitted with the IB2 Interface Board, the Versatile
+      AB will present an optional system controller node which controls the
+      extra peripherals on the interface board.
+    properties:
+      compatible:
+        contains:
+          const: arm,versatile-ib2-syscon
+    required:
+      - compatible
+      - reg
+
+required:
+  - compatible
+  - core-module@10000000
+
+...
-- 
2.23.0

[PATCH 5/7] dt-bindings: arm: Add RealView YAML schema

[Linus Walleij]

This implements the top-level schema for the ARM RealView
platforms.

Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 .../devicetree/bindings/arm/arm,realview.yaml | 123 ++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/arm,realview.yaml

diff --git a/Documentation/devicetree/bindings/arm/arm,realview.yaml b/Documentation/devicetree/bindings/arm/arm,realview.yaml
new file mode 100644
index 000000000000..d6e85d198afe
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/arm,realview.yaml
@@ -0,0 +1,123 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/arm,realview.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM RealView Boards Device Tree Bindings
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: |+
+  The ARM RealView series of reference designs were built to explore the ARM
+  11, Cortex A-8 and Cortex A-9 CPUs. This included new features compared to
+  the earlier CPUs such as TrustZone and multicore (MPCore).
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - description: ARM RealView Emulation Baseboard (HBI-0140) was created
+          as a generic platform to test different FPGA designs, and has
+          pluggable CPU modules, see ARM DUI 0303E.
+        items:
+          - const: arm,realview-eb
+      - description: ARM RealView Platform Baseboard for ARM1176JZF-S
+          (HBI-0147) was created as a development board to test ARM TrustZone,
+          CoreSight and Intelligent Energy Management (IEM) see ARM DUI 0425F.
+        items:
+          - const: arm,realview-pb1176
+      - description: ARM RealView Platform Baseboard for ARM 11 MPCore
+          (HBI-0159, HBI-0175 and HBI-0176) was created to showcase
+          multiprocessing with ARM11 using MPCore using symmetric
+          multiprocessing (SMP). See ARM DUI 0351E.
+        items:
+          - const: arm,realview-pb11mp
+      - description: ARM RealView Platform Baseboard for Cortex-A8 (HBI-0178,
+          HBI-0176 and HBI-0175) was the first reference platform for the
+          Cortex CPU family, including a Cortex-A8 test chip.
+        items:
+          - const: arm,realview-pba8
+      - description: ARM RealView Platform Baseboard Explore for Cortex-A9
+          (HBI-0182 and HBI-0183) was the reference platform for the Cortex-A9
+          CPU.
+        items:
+          - const: arm,realview-pbx
+
+  soc:
+    description: All RealView boards must provide a soc node in the root of the
+      device tree, representing the System-on-Chip since these test chips are
+      rather complex.
+    type: object
+    properties:
+      compatible:
+        oneOf:
+          - items:
+            - const: arm,realview-eb-soc
+            - const: simple-bus
+          - items:
+            - const: arm,realview-pb1176-soc
+            - const: simple-bus
+          - items:
+            - const: arm,realview-pb11mp-soc
+            - const: simple-bus
+          - items:
+            - const: arm,realview-pba8-soc
+            - const: simple-bus
+          - items:
+            - const: arm,realview-pbx-soc
+            - const: simple-bus
+
+    patternProperties:
+      "^.*syscon@[0-9a-f]+$":
+        type: object
+        description: All RealView boards must provide a syscon system controller
+          node inside the soc node.
+        properties:
+          compatible:
+            oneOf:
+              - items:
+                - const: arm,realview-eb11mp-revb-syscon
+                - const: arm,realview-eb-syscon
+                - const: syscon
+                - const: simple-mfd
+              - items:
+                - const: arm,realview-eb11mp-revc-syscon
+                - const: arm,realview-eb-syscon
+                - const: syscon
+                - const: simple-mfd
+              - items:
+                - const: arm,realview-eb-syscon
+                - const: syscon
+                - const: simple-mfd
+              - items:
+                - const: arm,realview-pb1176-syscon
+                - const: syscon
+                - const: simple-mfd
+              - items:
+                - const: arm,realview-pb11mp-syscon
+                - const: syscon
+                - const: simple-mfd
+              - items:
+                - const: arm,realview-pba8-syscon
+                - const: syscon
+                - const: simple-mfd
+              - items:
+                - const: arm,realview-pbx-syscon
+                - const: syscon
+                - const: simple-mfd
+
+        required:
+          - compatible
+          - reg
+
+    required:
+      - compatible
+
+required:
+  - compatible
+  - soc
+
+...
-- 
2.23.0

Re: [PATCH 5/7] dt-bindings: arm: Add RealView YAML schema

[Rob Herring]

On Mon, Feb 10, 2020 at 3:27 AM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> This implements the top-level schema for the ARM RealView
> platforms.
>
> Cc: Sudeep Holla <sudeep.holla@arm.com>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
>  .../devicetree/bindings/arm/arm,realview.yaml | 123 ++++++++++++++++++
>  1 file changed, 123 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/arm,realview.yaml

Same comments as patch 3 apply here...

>
> diff --git a/Documentation/devicetree/bindings/arm/arm,realview.yaml b/Documentation/devicetree/bindings/arm/arm,realview.yaml
> new file mode 100644
> index 000000000000..d6e85d198afe
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/arm,realview.yaml
> @@ -0,0 +1,123 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/arm,realview.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ARM RealView Boards Device Tree Bindings
> +
> +maintainers:
> +  - Linus Walleij <linus.walleij@linaro.org>
> +
> +description: |+
> +  The ARM RealView series of reference designs were built to explore the ARM
> +  11, Cortex A-8 and Cortex A-9 CPUs. This included new features compared to
> +  the earlier CPUs such as TrustZone and multicore (MPCore).
> +
> +properties:
> +  $nodename:
> +    const: '/'
> +  compatible:
> +    oneOf:
> +      - description: ARM RealView Emulation Baseboard (HBI-0140) was created
> +          as a generic platform to test different FPGA designs, and has
> +          pluggable CPU modules, see ARM DUI 0303E.
> +        items:
> +          - const: arm,realview-eb
> +      - description: ARM RealView Platform Baseboard for ARM1176JZF-S
> +          (HBI-0147) was created as a development board to test ARM TrustZone,
> +          CoreSight and Intelligent Energy Management (IEM) see ARM DUI 0425F.
> +        items:
> +          - const: arm,realview-pb1176
> +      - description: ARM RealView Platform Baseboard for ARM 11 MPCore
> +          (HBI-0159, HBI-0175 and HBI-0176) was created to showcase
> +          multiprocessing with ARM11 using MPCore using symmetric
> +          multiprocessing (SMP). See ARM DUI 0351E.
> +        items:
> +          - const: arm,realview-pb11mp
> +      - description: ARM RealView Platform Baseboard for Cortex-A8 (HBI-0178,
> +          HBI-0176 and HBI-0175) was the first reference platform for the
> +          Cortex CPU family, including a Cortex-A8 test chip.
> +        items:
> +          - const: arm,realview-pba8
> +      - description: ARM RealView Platform Baseboard Explore for Cortex-A9
> +          (HBI-0182 and HBI-0183) was the reference platform for the Cortex-A9
> +          CPU.
> +        items:
> +          - const: arm,realview-pbx
> +
> +  soc:
> +    description: All RealView boards must provide a soc node in the root of the
> +      device tree, representing the System-on-Chip since these test chips are
> +      rather complex.
> +    type: object
> +    properties:
> +      compatible:
> +        oneOf:
> +          - items:
> +            - const: arm,realview-eb-soc
> +            - const: simple-bus
> +          - items:
> +            - const: arm,realview-pb1176-soc
> +            - const: simple-bus
> +          - items:
> +            - const: arm,realview-pb11mp-soc
> +            - const: simple-bus
> +          - items:
> +            - const: arm,realview-pba8-soc
> +            - const: simple-bus
> +          - items:
> +            - const: arm,realview-pbx-soc
> +            - const: simple-bus

Can be simplified.

> +
> +    patternProperties:
> +      "^.*syscon@[0-9a-f]+$":
> +        type: object
> +        description: All RealView boards must provide a syscon system controller
> +          node inside the soc node.
> +        properties:
> +          compatible:
> +            oneOf:
> +              - items:
> +                - const: arm,realview-eb11mp-revb-syscon
> +                - const: arm,realview-eb-syscon
> +                - const: syscon
> +                - const: simple-mfd
> +              - items:
> +                - const: arm,realview-eb11mp-revc-syscon
> +                - const: arm,realview-eb-syscon
> +                - const: syscon
> +                - const: simple-mfd

These 2 can be 1 items list.

> +              - items:
> +                - const: arm,realview-eb-syscon
> +                - const: syscon
> +                - const: simple-mfd
> +              - items:
> +                - const: arm,realview-pb1176-syscon
> +                - const: syscon
> +                - const: simple-mfd
> +              - items:
> +                - const: arm,realview-pb11mp-syscon
> +                - const: syscon
> +                - const: simple-mfd
> +              - items:
> +                - const: arm,realview-pba8-syscon
> +                - const: syscon
> +                - const: simple-mfd
> +              - items:
> +                - const: arm,realview-pbx-syscon
> +                - const: syscon
> +                - const: simple-mfd

And these 5 1 items list.

> +
> +        required:
> +          - compatible
> +          - reg
> +
> +    required:
> +      - compatible
> +
> +required:
> +  - compatible
> +  - soc
> +
> +...
> --
> 2.23.0
>

[PATCH 6/7] dt-bindings: arm: Add Versatile Express and Juno YAML schema

[Linus Walleij]

This implements the top-level schema for the ARM Versatile
Express and Juno platforms.

Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 .../bindings/arm/arm,vexpress-juno.yaml       | 118 ++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml

diff --git a/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml b/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
new file mode 100644
index 000000000000..f22edf66b622
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
@@ -0,0 +1,118 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/arm,vexpress-juno.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Versatile Express and Juno Boards Device Tree Bindings
+
+maintainers:
+  - Sudeep Holla <sudeep.holla@arm.com>
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: |+
+  ARM's Versatile Express platform were built as reference designs for exploring
+  multicore Cortex-A class systems. The Versatile Express family contains both
+  32 bit (Aarch32) and 64 bit (Aarch64) systems.
+
+  The board consist of a motherboard and one or more daughterboards (tiles). The
+  motherboard provides a set of peripherals. Processor and RAM "live" on the
+  tiles.
+
+  The motherboard and each core tile should be described by a separate Device
+  Tree source file, with the tile's description including the motherboard file
+  using an include directive. As the motherboard can be initialized in one of
+  two different configurations ("memory maps"), care must be taken to include
+  the correct one.
+
+  When a new generation of boards were introduced under the name "Juno", these
+  shared to many common characteristics with the Versatile Express that the
+  "arm,vexpress" compatible was retained in the root node, and these are
+  included in this binding schema as well.
+
+  The root node indicates the CPU SoC on the core tile, and this
+  is a daughterboard to the main motherboard. The name used in the compatible
+  string shall match the name given in the core tile's technical reference
+  manual, followed by "arm,vexpress" as an additional compatible value. If
+  further subvariants are released of the core tile, even more fine-granular
+  compatible strings with up to three compatible strings are used.
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - description: CoreTile Express A9x4 (V2P-CA9) has 4 Cortex A9 CPU cores
+          in MPCore configuration in a test chip on the core tile. See ARM
+          DUI 0448I. This was the first Versatile Express platform.
+        items:
+          - const: arm,vexpress,v2p-ca9
+          - const: arm,vexpress
+      - description: CoreTile Express A5x2 (V2P-CA5s) has 2 Cortex A5 CPU cores
+          in a test chip on the core tile. It is intended to evaluate NEON, FPU
+          and Jazelle support in the Cortex A5 family. See ARM DUI 0541C.
+        items:
+          - const: arm,vexpress,v2p-ca5s
+          - const: arm,vexpress
+      - description: Coretile Express A15x2 (V2P-CA15) has 2 Cortex A15 CPU
+          cores in a MPCore configuration in a test chip on the core tile. See
+          ARM DUI 0604F.
+        items:
+          - const: arm,vexpress,v2p-ca15
+          - const: arm,vexpress
+      - description: CoreTile Express A15x4 (V2P-CA15, HBI-0237A) has 4 Cortex
+          A15 CPU cores in a test chip on the core tile. This is the first test
+          chip called "TC1".
+        items:
+          - const: arm,vexpress,v2p-ca15,tc1
+          - const: arm,vexpress,v2p-ca15
+          - const: arm,vexpress
+      - description: Coretile Express A15x2 A7x3 (V2P-CA15_A7) has 2 Cortex A15
+          CPU cores and 3 Cortex A7 cores in a big.LITTLE MPCore configuration
+          in a test chip on the core tile. See ARM DDI 0503I.
+        items:
+          - const: arm,vexpress,v2p-ca15_a7
+          - const: arm,vexpress
+      - description: LogicTile Express 20MG (V2F-1XV7) has 2 Cortex A53 CPU
+          cores in a test chip on the core tile. See ARM DDI 0498D.
+        items:
+          - const: arm,vexpress,v2f-1xv7,ca53x2
+          - const: arm,vexpress,v2f-1xv7
+          - const: arm,vexpress
+      - description: Arm Versatile Express Juno "r0" (the first Juno board,
+          V2M-Juno) was introduced as a vehicle for evaluating big.LITTLE on
+          AArch64 CPU cores. It has 2 Cortex A57 CPU cores and 4 Cortex A53
+          cores in a big.LITTLE configuration. It also features the MALI T624
+          GPU. See ARM document 100113_0000_07_en.
+        items:
+          - const: arm,juno
+          - const: arm,vexpress
+      - description: Arm Versatile Express Juno r1 Development Platform
+          (V2M-Juno r1) was introduced mainly aimed at development of PCIe
+          based systems. Juno r1 also has support for AXI masters placed on
+          the TLX connectors to join the coherency domain. Otherwise it is the
+          same configuration as Juno r0. See ARM document 100122_0100_06_en.
+        items:
+          - const: arm,juno-r1
+          - const: arm,vexpress
+      - description: Arm Versatile Express Juno r2 Development Platform
+          (V2M-Juno r2). It has the same feature set as Juno r0 and r1. See
+          ARM document 100114_0200_04_en.
+        items:
+          - const: arm,juno-r2
+          - const: arm,vexpress
+
+  arm,hbi:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description: This indicates the ARM HBI (Hardware Board ID), this is
+      ARM's unique board model ID, visible on the PCB's silkscreen.
+
+  arm,vexpress-site:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description: Site
+
+required:
+  - compatible
+  - arm,hbi
+
+...
-- 
2.23.0

Re: [PATCH 6/7] dt-bindings: arm: Add Versatile Express and Juno YAML schema

[Sudeep Holla]

On Mon, Feb 10, 2020 at 10:27:12AM +0100, Linus Walleij wrote:
> This implements the top-level schema for the ARM Versatile
> Express and Juno platforms.
>
> Cc: Sudeep Holla <sudeep.holla@arm.com>

With my limited understanding on YAML scheme for DT bindings, this looks
good to me.

Acked-by: Sudeep Holla <sudeep.holla@arm.com>

-- 
Regards,

Re: [PATCH 6/7] dt-bindings: arm: Add Versatile Express and Juno YAML schema

[Rob Herring]

On Mon, Feb 10, 2020 at 3:27 AM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> This implements the top-level schema for the ARM Versatile
> Express and Juno platforms.
>
> Cc: Sudeep Holla <sudeep.holla@arm.com>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
>  .../bindings/arm/arm,vexpress-juno.yaml       | 118 ++++++++++++++++++
>  1 file changed, 118 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
>
> diff --git a/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml b/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
> new file mode 100644
> index 000000000000..f22edf66b622
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
> @@ -0,0 +1,118 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/arm,vexpress-juno.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ARM Versatile Express and Juno Boards Device Tree Bindings
> +
> +maintainers:
> +  - Sudeep Holla <sudeep.holla@arm.com>
> +  - Linus Walleij <linus.walleij@linaro.org>
> +
> +description: |+
> +  ARM's Versatile Express platform were built as reference designs for exploring
> +  multicore Cortex-A class systems. The Versatile Express family contains both
> +  32 bit (Aarch32) and 64 bit (Aarch64) systems.
> +
> +  The board consist of a motherboard and one or more daughterboards (tiles). The
> +  motherboard provides a set of peripherals. Processor and RAM "live" on the
> +  tiles.
> +
> +  The motherboard and each core tile should be described by a separate Device
> +  Tree source file, with the tile's description including the motherboard file
> +  using an include directive. As the motherboard can be initialized in one of
> +  two different configurations ("memory maps"), care must be taken to include
> +  the correct one.
> +
> +  When a new generation of boards were introduced under the name "Juno", these
> +  shared to many common characteristics with the Versatile Express that the
> +  "arm,vexpress" compatible was retained in the root node, and these are
> +  included in this binding schema as well.
> +
> +  The root node indicates the CPU SoC on the core tile, and this
> +  is a daughterboard to the main motherboard. The name used in the compatible
> +  string shall match the name given in the core tile's technical reference
> +  manual, followed by "arm,vexpress" as an additional compatible value. If
> +  further subvariants are released of the core tile, even more fine-granular
> +  compatible strings with up to three compatible strings are used.
> +
> +properties:
> +  $nodename:
> +    const: '/'
> +  compatible:
> +    oneOf:
> +      - description: CoreTile Express A9x4 (V2P-CA9) has 4 Cortex A9 CPU cores
> +          in MPCore configuration in a test chip on the core tile. See ARM
> +          DUI 0448I. This was the first Versatile Express platform.
> +        items:
> +          - const: arm,vexpress,v2p-ca9
> +          - const: arm,vexpress
> +      - description: CoreTile Express A5x2 (V2P-CA5s) has 2 Cortex A5 CPU cores
> +          in a test chip on the core tile. It is intended to evaluate NEON, FPU
> +          and Jazelle support in the Cortex A5 family. See ARM DUI 0541C.
> +        items:
> +          - const: arm,vexpress,v2p-ca5s
> +          - const: arm,vexpress
> +      - description: Coretile Express A15x2 (V2P-CA15) has 2 Cortex A15 CPU
> +          cores in a MPCore configuration in a test chip on the core tile. See
> +          ARM DUI 0604F.
> +        items:
> +          - const: arm,vexpress,v2p-ca15
> +          - const: arm,vexpress
> +      - description: CoreTile Express A15x4 (V2P-CA15, HBI-0237A) has 4 Cortex
> +          A15 CPU cores in a test chip on the core tile. This is the first test
> +          chip called "TC1".
> +        items:
> +          - const: arm,vexpress,v2p-ca15,tc1
> +          - const: arm,vexpress,v2p-ca15
> +          - const: arm,vexpress
> +      - description: Coretile Express A15x2 A7x3 (V2P-CA15_A7) has 2 Cortex A15
> +          CPU cores and 3 Cortex A7 cores in a big.LITTLE MPCore configuration
> +          in a test chip on the core tile. See ARM DDI 0503I.
> +        items:
> +          - const: arm,vexpress,v2p-ca15_a7
> +          - const: arm,vexpress
> +      - description: LogicTile Express 20MG (V2F-1XV7) has 2 Cortex A53 CPU
> +          cores in a test chip on the core tile. See ARM DDI 0498D.
> +        items:
> +          - const: arm,vexpress,v2f-1xv7,ca53x2
> +          - const: arm,vexpress,v2f-1xv7
> +          - const: arm,vexpress
> +      - description: Arm Versatile Express Juno "r0" (the first Juno board,
> +          V2M-Juno) was introduced as a vehicle for evaluating big.LITTLE on
> +          AArch64 CPU cores. It has 2 Cortex A57 CPU cores and 4 Cortex A53
> +          cores in a big.LITTLE configuration. It also features the MALI T624
> +          GPU. See ARM document 100113_0000_07_en.
> +        items:
> +          - const: arm,juno
> +          - const: arm,vexpress
> +      - description: Arm Versatile Express Juno r1 Development Platform
> +          (V2M-Juno r1) was introduced mainly aimed at development of PCIe
> +          based systems. Juno r1 also has support for AXI masters placed on
> +          the TLX connectors to join the coherency domain. Otherwise it is the
> +          same configuration as Juno r0. See ARM document 100122_0100_06_en.
> +        items:
> +          - const: arm,juno-r1
> +          - const: arm,vexpress
> +      - description: Arm Versatile Express Juno r2 Development Platform
> +          (V2M-Juno r2). It has the same feature set as Juno r0 and r1. See
> +          ARM document 100114_0200_04_en.
> +        items:
> +          - const: arm,juno-r2
> +          - const: arm,vexpress
> +
> +  arm,hbi:
> +    $ref: '/schemas/types.yaml#/definitions/uint32'
> +    description: This indicates the ARM HBI (Hardware Board ID), this is
> +      ARM's unique board model ID, visible on the PCB's silkscreen.
> +
> +  arm,vexpress-site:
> +    $ref: '/schemas/types.yaml#/definitions/uint32'
> +    description: Site

Site?

Any constraints? 2^32 - 1 is valid?

> +
> +required:
> +  - compatible
> +  - arm,hbi
> +
> +...
> --
> 2.23.0
>

[PATCH 7/7] dt-bindings: arm: Drop the non-YAML bindings

[Linus Walleij]

We created new bindings for the ARM Board using YAML
so delete the old human-parseable-only bindings.

Cc: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 .../devicetree/bindings/arm/arm-boards        | 237 ------------------
 .../devicetree/bindings/arm/vexpress.txt      | 229 -----------------
 2 files changed, 466 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/arm/arm-boards
 delete mode 100644 Documentation/devicetree/bindings/arm/vexpress.txt

diff --git a/Documentation/devicetree/bindings/arm/arm-boards b/Documentation/devicetree/bindings/arm/arm-boards
deleted file mode 100644
index 96b1dad58253..000000000000
--- a/Documentation/devicetree/bindings/arm/arm-boards
+++ /dev/null
@@ -1,237 +0,0 @@
-ARM Integrator/AP (Application Platform) and Integrator/CP (Compact Platform)
------------------------------------------------------------------------------
-ARM's oldest Linux-supported platform with connectors for different core
-tiles of ARMv4, ARMv5 and ARMv6 type.
-
-Required properties (in root node):
-	compatible = "arm,integrator-ap";  /* Application Platform */
-	compatible = "arm,integrator-cp";  /* Compact Platform */
-
-FPGA type interrupt controllers, see the versatile-fpga-irq binding doc.
-
-Required nodes:
-
-- core-module: the root node to the Integrator platforms must have
-  a core-module with regs and the compatible string
-  "arm,core-module-integrator"
-- external-bus-interface: the root node to the Integrator platforms
-  must have an external bus interface with regs and the
-  compatible-string "arm,external-bus-interface"
-
-  Required properties for the core module:
-  - regs: the location and size of the core module registers, one
-    range of 0x200 bytes.
-
-- syscon: the root node of the Integrator platforms must have a
-  system controller node pointing to the control registers,
-  with the compatible string
-  "arm,integrator-ap-syscon"
-  "arm,integrator-cp-syscon"
-  respectively.
-
-  Required properties for the system controller:
-  - regs: the location and size of the system controller registers,
-    one range of 0x100 bytes.
-
-  Required properties for the AP system controller:
-  - interrupts: the AP syscon node must include the logical module
-    interrupts, stated in order of module instance <module 0>,
-    <module 1>, <module 2> ... for the CP system controller this
-    is not required not of any use.
-
-/dts-v1/;
-/include/ "integrator.dtsi"
-
-/ {
-	model = "ARM Integrator/AP";
-	compatible = "arm,integrator-ap";
-
-	core-module@10000000 {
-		compatible = "arm,core-module-integrator";
-		reg = <0x10000000 0x200>;
-	};
-
-	ebi@12000000 {
-		compatible = "arm,external-bus-interface";
-		reg = <0x12000000 0x100>;
-	};
-
-	syscon {
-		compatible = "arm,integrator-ap-syscon";
-		reg = <0x11000000 0x100>;
-		interrupt-parent = <&pic>;
-		/* These are the logic module IRQs */
-		interrupts = <9>, <10>, <11>, <12>;
-	};
-};
-
-
-ARM Versatile Application and Platform Baseboards
--------------------------------------------------
-ARM's development hardware platform with connectors for customizable
-core tiles.  The hardware configuration of the Versatile boards is
-highly customizable.
-
-Required properties (in root node):
-	compatible = "arm,versatile-ab";  /* Application baseboard */
-	compatible = "arm,versatile-pb";  /* Platform baseboard */
-
-Interrupt controllers:
-- VIC required properties:
-	compatible = "arm,versatile-vic";
-	interrupt-controller;
-	#interrupt-cells = <1>;
-
-- SIC required properties:
-	compatible = "arm,versatile-sic";
-	interrupt-controller;
-	#interrupt-cells = <1>;
-
-Required nodes:
-
-- core-module: the root node to the Versatile platforms must have
-  a core-module with regs and the compatible strings
-  "arm,core-module-versatile", "syscon"
-
-Optional nodes:
-
-- arm,versatile-ib2-syscon : if the Versatile has an IB2 interface
-  board mounted, this has a separate system controller that is
-  defined in this node.
-  Required properties:
-  compatible = "arm,versatile-ib2-syscon", "syscon"
-
-ARM RealView Boards
--------------------
-The RealView boards cover tailored evaluation boards that are used to explore
-the ARM11 and Cortex A-8 and Cortex A-9 processors.
-
-Required properties (in root node):
-	/* RealView Emulation Baseboard */
-	compatible = "arm,realview-eb";
-	 /* RealView Platform Baseboard for ARM1176JZF-S */
-	compatible = "arm,realview-pb1176";
-	/* RealView Platform Baseboard for ARM11 MPCore */
-	compatible = "arm,realview-pb11mp";
-	/* RealView Platform Baseboard for Cortex A-8 */
-	compatible = "arm,realview-pba8";
-	/* RealView Platform Baseboard Explore for Cortex A-9 */
-	compatible = "arm,realview-pbx";
-
-Required nodes:
-
-- soc: some node of the RealView platforms must be the SoC
-  node that contain the SoC-specific devices, with the compatible
-  string set to one of these tuples:
-   "arm,realview-eb-soc", "simple-bus"
-   "arm,realview-pb1176-soc", "simple-bus"
-   "arm,realview-pb11mp-soc", "simple-bus"
-   "arm,realview-pba8-soc", "simple-bus"
-   "arm,realview-pbx-soc", "simple-bus"
-
-- syscon: some subnode of the RealView SoC node must be a
-  system controller node pointing to the control registers,
-  with the compatible string set to one of these:
-   "arm,realview-eb11mp-revb-syscon", "arm,realview-eb-syscon", "syscon"
-   "arm,realview-eb11mp-revc-syscon", "arm,realview-eb-syscon", "syscon"
-   "arm,realview-eb-syscon", "syscon"
-   "arm,realview-pb1176-syscon", "syscon"
-   "arm,realview-pb11mp-syscon", "syscon"
-   "arm,realview-pba8-syscon", "syscon"
-   "arm,realview-pbx-syscon", "syscon"
-
-  Required properties for the system controller:
-  - regs: the location and size of the system controller registers,
-    one range of 0x1000 bytes.
-
-Example:
-
-/dts-v1/;
-#include <dt-bindings/interrupt-controller/irq.h>
-
-/ {
-	model = "ARM RealView PB1176 with device tree";
-	compatible = "arm,realview-pb1176";
-	#address-cells = <1>;
-	#size-cells = <1>;
-
-	soc {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		compatible = "arm,realview-pb1176-soc", "simple-bus";
-		ranges;
-
-		syscon: syscon@10000000 {
-			compatible = "arm,realview-syscon", "syscon";
-			reg = <0x10000000 0x1000>;
-		};
-
-	};
-};
-
-ARM Versatile Express Boards
------------------------------
-For details on the device tree bindings for ARM Versatile Express boards
-please consult the vexpress.txt file in the same directory as this file.
-
-ARM Juno Boards
-----------------
-The Juno boards are targeting development for AArch64 systems. The first
-iteration, Juno r0, is a vehicle for evaluating big.LITTLE on AArch64,
-with the second iteration, Juno r1, mainly aimed at development of PCIe
-based systems. Juno r1 also has support for AXI masters placed on the TLX
-connectors to join the coherency domain.
-
-Juno boards are described in a similar way to ARM Versatile Express boards,
-with the motherboard part of the hardware being described in a separate file
-to highlight the fact that is part of the support infrastructure for the SoC.
-Juno device tree bindings also share the Versatile Express bindings as
-described under the RS1 memory mapping.
-
-Required properties (in root node):
-	compatible = "arm,juno";	/* For Juno r0 board */
-	compatible = "arm,juno-r1";	/* For Juno r1 board */
-	compatible = "arm,juno-r2";	/* For Juno r2 board */
-
-Required nodes:
-The description for the board must include:
-   - a "psci" node describing the boot method used for the secondary CPUs.
-     A detailed description of the bindings used for "psci" nodes is present
-     in the psci.yaml file.
-   - a "cpus" node describing the available cores and their associated
-     "enable-method"s. For more details see cpus.yaml file.
-
-Example:
-
-/dts-v1/;
-/ {
-	model = "ARM Juno development board (r0)";
-	compatible = "arm,juno", "arm,vexpress";
-	interrupt-parent = <&gic>;
-	#address-cells = <2>;
-	#size-cells = <2>;
-
-	cpus {
-		#address-cells = <2>;
-		#size-cells = <0>;
-
-		A57_0: cpu@0 {
-			compatible = "arm,cortex-a57";
-			reg = <0x0 0x0>;
-			device_type = "cpu";
-			enable-method = "psci";
-		};
-
-		.....
-
-		A53_0: cpu@100 {
-			compatible = "arm,cortex-a53";
-			reg = <0x0 0x100>;
-			device_type = "cpu";
-			enable-method = "psci";
-		};
-
-		.....
-	};
-
-};
diff --git a/Documentation/devicetree/bindings/arm/vexpress.txt b/Documentation/devicetree/bindings/arm/vexpress.txt
deleted file mode 100644
index 39844cd0bcce..000000000000
--- a/Documentation/devicetree/bindings/arm/vexpress.txt
+++ /dev/null
@@ -1,229 +0,0 @@
-ARM Versatile Express boards family
------------------------------------
-
-ARM's Versatile Express platform consists of a motherboard and one
-or more daughterboards (tiles). The motherboard provides a set of
-peripherals. Processor and RAM "live" on the tiles.
-
-The motherboard and each core tile should be described by a separate
-Device Tree source file, with the tile's description including
-the motherboard file using a /include/ directive. As the motherboard
-can be initialized in one of two different configurations ("memory
-maps"), care must be taken to include the correct one.
-
-
-Root node
----------
-
-Required properties in the root node:
-- compatible value:
-	compatible = "arm,vexpress,<model>", "arm,vexpress";
-  where <model> is the full tile model name (as used in the tile's
-    Technical Reference Manual), eg.:
-    - for Coretile Express A5x2 (V2P-CA5s):
-	compatible = "arm,vexpress,v2p-ca5s", "arm,vexpress";
-    - for Coretile Express A9x4 (V2P-CA9):
-	compatible = "arm,vexpress,v2p-ca9", "arm,vexpress";
-  If a tile comes in several variants or can be used in more then one
-  configuration, the compatible value should be:
-	compatible = "arm,vexpress,<model>,<variant>", \
-				"arm,vexpress,<model>", "arm,vexpress";
-  eg:
-    - Coretile Express A15x2 (V2P-CA15) with Tech Chip 1:
-	compatible = "arm,vexpress,v2p-ca15,tc1", \
-				"arm,vexpress,v2p-ca15", "arm,vexpress";
-    - LogicTile Express 13MG (V2F-2XV6) running Cortex-A7 (3 cores) SMM:
-	compatible = "arm,vexpress,v2f-2xv6,ca7x3", \
-				"arm,vexpress,v2f-2xv6", "arm,vexpress";
-
-Optional properties in the root node:
-- tile model name (use name from the tile's Technical Reference
-  Manual, eg. "V2P-CA5s")
-	model = "<model>";
-- tile's HBI number (unique ARM's board model ID, visible on the
-  PCB's silkscreen) in hexadecimal transcription:
-	arm,hbi = <0xhbi>
-  eg:
-  - for Coretile Express A5x2 (V2P-CA5s) HBI-0191:
-	arm,hbi = <0x191>;
-  - Coretile Express A9x4 (V2P-CA9) HBI-0225:
-	arm,hbi = <0x225>;
-
-
-CPU nodes
----------
-
-Top-level standard "cpus" node is required. It must contain a node
-with device_type = "cpu" property for every available core, eg.:
-
-	cpus {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		cpu@0 {
-			device_type = "cpu";
-			compatible = "arm,cortex-a5";
-			reg = <0>;
-		};
-	};
-
-
-Configuration infrastructure
-----------------------------
-
-The platform has an elaborated configuration system, consisting of
-microcontrollers residing on the mother- and daughterboards known
-as Motherboard/Daughterboard Configuration Controller (MCC and DCC).
-The controllers are responsible for the platform initialization
-(reset generation, flash programming, FPGA bitfiles loading etc.)
-but also control clock generators, voltage regulators, gather
-environmental data like temperature, power consumption etc. Even
-the video output switch (FPGA) is controlled that way.
-
-The controllers are not mapped into normal memory address space
-and must be accessed through bridges - other devices capable
-of generating transactions on the configuration bus.
-
-The nodes describing configuration controllers must define
-the following properties:
-- compatible value:
-	compatible = "arm,vexpress,config-bus";
-- bridge phandle:
-	arm,vexpress,config-bridge = <phandle>;
-and children describing available functions.
-
-
-Platform topology
------------------
-
-As Versatile Express can be configured in number of physically
-different setups, the device tree should describe platform topology.
-Root node and main motherboard node must define the following
-property, describing physical location of the children nodes:
-- site number:
-	arm,vexpress,site = <number>;
-  where 0 means motherboard, 1 or 2 are daugtherboard sites,
-  0xf means "master" site (site containing main CPU tile)
-- when daughterboards are stacked on one site, their position
-  in the stack be be described with:
-	arm,vexpress,position = <number>;
-- when describing tiles consisting more than one DCC, its number
-  can be described with:
-	arm,vexpress,dcc = <number>;
-
-Any of the numbers above defaults to zero if not defined in
-the node or any of its parent.
-
-
-Motherboard
------------
-
-The motherboard description file provides a single "motherboard" node
-using 2 address cells corresponding to the Static Memory Bus used
-between the motherboard and the tile. The first cell defines the Chip
-Select (CS) line number, the second cell address offset within the CS.
-All interrupt lines between the motherboard and the tile are active
-high and are described using single cell.
-
-Optional properties of the "motherboard" node:
-- motherboard's memory map variant:
-	arm,v2m-memory-map = "<name>";
-  where name is one of:
-  - "rs1" - for RS1 map (i.a. peripherals on CS3); this map is also
-            referred to as "ARM Cortex-A Series memory map":
-	arm,v2m-memory-map = "rs1";
-  When this property is missing, the motherboard is using the original
-  memory map (also known as the "Legacy memory map", primarily used
-  with the original CoreTile Express A9x4) with peripherals on CS7.
-
-Motherboard .dtsi files provide a set of labelled peripherals that
-can be used to obtain required phandle in the tile's "aliases" node:
-- UARTs, note that the numbers correspond to the physical connectors
-  on the motherboard's back panel:
-	v2m_serial0, v2m_serial1, v2m_serial2 and v2m_serial3
-- I2C controllers:
-	v2m_i2c_dvi and v2m_i2c_pcie
-- SP804 timers:
-	v2m_timer01 and v2m_timer23
-
-The tile description should define a "smb" node, describing the
-Static Memory Bus between the tile and motherboard. It must define
-the following properties:
-- "simple-bus" compatible value (to ensure creation of the children)
-	compatible = "simple-bus";
-- mapping of the SMB CS/offset addresses into main address space:
-	#address-cells = <2>;
-	#size-cells = <1>;
-	ranges = <...>;
-- interrupts mapping:
-	#interrupt-cells = <1>;
-	interrupt-map-mask = <0 0 63>;
-	interrupt-map = <...>;
-
-
-Example of a VE tile description (simplified)
----------------------------------------------
-
-/dts-v1/;
-
-/ {
-	model = "V2P-CA5s";
-	arm,hbi = <0x225>;
-	arm,vexpress,site = <0xf>;
-	compatible = "arm,vexpress-v2p-ca5s", "arm,vexpress";
-	interrupt-parent = <&gic>;
-	#address-cells = <1>;
-	#size-cells = <1>;
-
-	chosen { };
-
-	aliases {
-		serial0 = &v2m_serial0;
-	};
-
-	cpus {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		cpu@0 {
-			device_type = "cpu";
-			compatible = "arm,cortex-a5";
-			reg = <0>;
-		};
-	};
-
-	gic: interrupt-controller@2c001000 {
-		compatible = "arm,cortex-a9-gic";
-		#interrupt-cells = <3>;
-		#address-cells = <0>;
-		interrupt-controller;
-		reg = <0x2c001000 0x1000>,
-		      <0x2c000100 0x100>;
-	};
-
-	dcc {
-		compatible = "arm,vexpress,config-bus";
-		arm,vexpress,config-bridge = <&v2m_sysreg>;
-
-		osc@0 {
-			compatible = "arm,vexpress-osc";
-		};
-	};
-
-	smb {
-		compatible = "simple-bus";
-
-		#address-cells = <2>;
-		#size-cells = <1>;
-		/* CS0 is visible at 0x08000000 */
-		ranges = <0 0 0x08000000 0x04000000>;
-
-		#interrupt-cells = <1>;
-		interrupt-map-mask = <0 0 63>;
-		/* Active high IRQ 0 is connected to GIC's SPI0 */
-		interrupt-map = <0 0 0 &gic 0 0 4>;
-
-		/include/ "vexpress-v2m-rs1.dtsi"
-	};
-};
-
-- 
2.23.0