dts: edtlib: test pin and clock controller, partitions, special nodes

Tests for edtlib features:
- enable bindings for special nodes without compatibles
- allow binding override by binding file name
- allow extraction of gpio-ranges properties
- extract pinctrl state and pin configuration nodes
- extract clock inputs and clock outputs
- extract partitions nodes
- extract gpio led nodes

Signed-off-by: Bobby Noelte <[email protected]>

Author: b0661

scripts/dts/test-bindings-2/multidir.yaml

@@ -2,4 +2,4 @@
 
 description: Binding in test-bindings-2/
 
-compatible: "in-dir-2"
+compatible: "in-dir"

scripts/dts/test-bindings/chosen.yaml

@@ -0,0 +1,70 @@
+# Copyright (c) 2019..2020 Bobby Noelte
+# SPDX-License-Identifier: Apache-2.0
+
+description: Chosen properties
+
+compatible: "chosen"
+
+properties:
+    stdout-path:
+        type: string
+        required: false
+        description: >
+          Device to be used for boot console output
+          If the character ":" is present in the value, this terminates the path.
+          The meaning of any characters following the ":" is device-specific, and
+          must be specified in the relevant binding documentation.
+          For UART devices, the preferred binding is a string in the form:
+            path:<baud>{<parity>{<bits>{<flow>}}}
+          where
+            path    - path of uart device
+            baud	- baud rate in decimal
+            parity	- 'n' (none), 'o', (odd) or 'e' (even)
+            bits	- number of data bits
+            flow	- 'r' (rts)
+          For example: 115200n8r
+
+    zephyr,flash:
+        type: path
+        required: false
+        description: TBD
+
+    zephyr,sram:
+        type: path
+        required: false
+        description: TBD
+
+    zephyr,ccm:
+        type: path
+        required: false
+        description: TBD
+
+    zephyr,console:
+        type: path
+        required: false
+        description: TBD
+
+    zephyr,shell-uart:
+        type: path
+        required: false
+        description: TBD
+
+    zephyr,bt-uart:
+        type: path
+        required: false
+        description: TBD
+
+    zephyr,uart-pipe:
+        type: path
+        required: false
+        description: TBD
+
+    zephyr,bt-mon-uart:
+        type: path
+        required: false
+        description: TBD
+
+    zephyr,uart-mcumgr:
+        type: path
+        required: false
+        description: TBD

scripts/dts/test-bindings/clock-consumer.yaml

@@ -0,0 +1,58 @@
+# Copyright (c) 2018..2020 Bobby Noelte
+# SPDX-License-Identifier: Apache-2.0
+
+# -- Assigned clock parents and rates --
+# Some platforms may require initial configuration of default parent clocks
+# and clock frequencies. Such a configuration can be specified in a device tree
+# node through assigned-clocks, assigned-clock-parents and assigned-clock-rates
+# properties.
+
+description: Clock consumer
+
+compatible: "clock-consumer"
+
+properties:
+    clocks:
+      type: phandle-array
+      required: true
+      description: >
+        List of phandle and clock specifier pairs, one pair for each clock
+        input to the device. Note - if the clock provider specifies '0' for
+        clock-cells, then only the phandle portion of the pair will appear.
+
+    clock-names:
+      type: string-array
+      required: false
+      description: >
+        List of clock input name strings sorted in the same order as the clocks
+        property.
+
+    clock-ranges:
+      type: boolean
+      required: false
+      description: >
+        Empty property indicating that child nodes can inherit named clocks from
+        this node. Useful for bus nodes to provide a clock to their children.
+
+    assigned-clocks:
+      type: phandle-array
+      required: false
+      description: >
+        List of phandle and clock specifier pairs, one pair for each assigned
+        clock input. Note - if the clock provider specifies '0' for
+        clock-cells, then only the phandle portion of the pair will appear.
+
+    assigned-clock-parents:
+      type: phandle-array
+      required: false
+      description: >
+        List of parent clocks in the form of a phandle and clock
+        specifier pair. The list shall correspond to the clocks listed in the
+        assigned-clocks directive.
+
+    assigned-clock-rates:
+      type: array
+      required: false
+      description: >
+        List of frequencies in Hz. The list shall correspond to the clocks
+        listed in the assigned-clocks directive.

scripts/dts/test-bindings/clock-controller.yaml

@@ -0,0 +1,40 @@
+# Copyright (c) 2019, Linaro Limited
+# Copyright (c) 2019..2020 Bobby Noelte
+# SPDX-License-Identifier: Apache-2.0
+
+# Common fields for clock controllers
+
+description: Clock provider
+
+compatible: "clock-provider"
+
+properties:
+    "#clock-cells":
+      type: int
+      required: true
+      description: Number of items to expect in a Clock specifier
+
+    clock-output-names:
+        type: string-array
+        required: false
+        description: >
+          A list of strings of clock output signal names indexed by the first
+          cell in the clock specifier.
+
+    clock-indices:
+        type: array
+        required: false
+        description: >
+          The identifying number for the clocks in the node. If it is not linear
+          from zero, then this allows the mapping of identifiers into the
+          clock-output-names array.
+
+    protected-clocks:
+        type: phandles
+        required: false
+        description: >
+          Clocks that are not fully exposed, such as in situations where those
+          clocks are used by drivers running in ARM secure execution levels.
+
+clock-cells:
+    - clock-id

scripts/dts/test-bindings/fixed-partition.yaml

@@ -0,0 +1,24 @@
+# Copyright (c) 2018..2020 Bobby Noelte
+# SPDX-License-Identifier: Apache-2.0
+
+description: Fixed partition (one of the partions of a 'fixed-partitions' node).
+
+compatible: "fixed-partition"
+
+properties:
+    label:
+        type: string
+        required: false
+        description: The label / name for this partition.  If omitted, the label is taken
+                     from the node name (excluding the unit address).
+
+    read-only:
+        type: boolean
+        required: false
+        description: This parameter, if present, is a hint that this
+                     partition should/ can only be used read-only.
+
+    reg:
+        type: array
+        required: false
+        description: partition offset (address) and size within flash

scripts/dts/test-bindings/gpio-2-cell.yaml

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: BSD-3-Clause
+
+description: GPIO controller with two cells
+
+compatible: "gpio-two-cell"
+
+properties:
+    "#gpio-cells":
+     type: int
+     required: true
+
+gpio-cells:
+    - gpio_cell_one
+    - gpio_cell_two

scripts/dts/test-bindings/gpio-led.yaml

@@ -0,0 +1,47 @@
+# Copyright (c) 2020 Bobby Noelte
+# SPDX-License-Identifier: Apache-2.0
+
+description: GPIO LED
+
+compatible: "gpio-led"
+
+properties:
+    gpios:
+      type: phandle-array
+      required: true
+    function:
+      required: false
+      type: int
+      description: Numerical LED functon identifier.
+    color:
+      required: false
+      type: int
+      description: Numerical LED color identifier
+    default-state:
+      required: false
+      type: int
+      default: 0
+      description: >
+        The initial state of the LED. Valid values are LED_STATE_OFF (0),
+        LED_STATE_ON (1), and LED_STATE_KEEP (2). If the LED is already on or
+        off and the default-state property is set the to same value, then no
+        glitch should be produced where the LED momentarily turns off (or on).
+        The LED_STATE_KEEP setting will keep the LED at whatever its current
+        state is, without producing a glitch. The default is LED_STATE_OFF (0)
+        if this property is not present.
+    led-pattern:
+      required: false
+      type: array
+      description: Array of integers with default pattern for certain triggers.
+    retain-state-suspended:
+      required: false
+      type: boolean
+      description: Retain the state of the LED in suspend state.
+    retain-state-shutdown:
+      required: false
+      type: boolean
+      description: Retain the state of the LED on shutdown.
+    panic-indicator:
+      required: false
+      type: boolean
+      description: The LED should be used as a panic indicator.

scripts/dts/test-bindings/gpio-leds.yaml

@@ -0,0 +1,6 @@
+# Copyright (c) 2020 Bobby Noelte
+# SPDX-License-Identifier: Apache-2.0
+
+description: GPIO LEDs controller
+
+compatible: "gpio-leds"

scripts/dts/test-bindings/multidir.yaml

@@ -2,4 +2,4 @@
 
 description: Binding in test-bindings/
 
-compatible: "in-dir-1"
+compatible: "in-dir"

scripts/dts/test-bindings/partition.yaml

@@ -0,0 +1,25 @@
+# Copyright (c) 2018,2019 Bobby Noelte
+# SPDX-License-Identifier: Apache-2.0
+
+description: Flash partition definition for fixed partitions
+
+compatible: "fixed-partitions"
+
+properties:
+    "#address-cells":
+      type: int
+      required: true
+      description: >
+        <1>: for partitions that require a single 32-bit cell to represent their
+            size/address (aka the value is below 4 GiB)
+        <2>: for partitions that require two 32-bit cells to represent their
+            size/address (aka the value is 4 GiB or greater).
+
+    "#size-cells":
+      type: int
+      required: false
+      description: >
+        <1>: for partitions that require a single 32-bit cell to represent their
+            size/address (aka the value is below 4 GiB)
+        <2>: for partitions that require two 32-bit cells to represent their
+            size/address (aka the value is 4 GiB or greater).