[PATCH v2] dt-bindings: arm: vexpress: drop the obsolete hwmon and regulator text files

[Quchaosheng]

Documentation/devicetree/bindings/hwmon/vexpress.txt describes the
arm,vexpress-volt, -amp, -temp, -power and -energy sensors, and
Documentation/devicetree/bindings/regulator/vexpress.txt describes the
arm,vexpress-volt regulator.

Both restate what arm/vexpress-config.yaml already documents: the same
compatibles, the arm,vexpress-sysreg,func property and the label property.
The regulator node refers to regulator.yaml for the generic regulator
properties.

The regulator file also lists two of them as required, regulator-name and
regulator-always-on. regulator.yaml defines both but requires neither, so
removing the file without doing anything else would quietly drop that
constraint. Add them to the regulator node's required list; all 13 in-tree
arm,vexpress-volt nodes set both.

One sentence in the regulator file is not a restatement: it says that a
supply without regulator-min-microvolt and regulator-max-microvolt is
treated as fixed. vexpress_regulator_probe() implements that by selecting
vexpress_regulator_ops_ro when the two properties do not both define a
range. Move the note into the regulator node description in the schema,
so that removing the file does not lose it.

Nothing else refers to the two files. Remove them.

Assisted-by: LLM
Signed-off-by: Quchaosheng <quchaosheng000406 at 163.com>
---

Changes in v2:
- Add regulator-name and regulator-always-on to the required list of the
  regulator node. The deleted text file listed both as required while
  regulator.yaml requires neither, so the constraint would have been lost
  silently. Reported by sashiko.
 .../bindings/arm/vexpress-config.yaml         |  6 ++++
 .../devicetree/bindings/hwmon/vexpress.txt    | 23 -------------
 .../bindings/regulator/vexpress.txt           | 32 -------------------
 3 files changed, 6 insertions(+), 55 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/hwmon/vexpress.txt
 delete mode 100644 Documentation/devicetree/bindings/regulator/vexpress.txt

diff --git a/Documentation/devicetree/bindings/arm/vexpress-config.yaml b/Documentation/devicetree/bindings/arm/vexpress-config.yaml
index 41c53e3acc12..8fe24a997cfd 100644
--- a/Documentation/devicetree/bindings/arm/vexpress-config.yaml
+++ b/Documentation/devicetree/bindings/arm/vexpress-config.yaml
@@ -139,6 +139,10 @@ patternProperties:
 
   "^regulator-.+$":
     $ref: /schemas/regulator/regulator.yaml#
+    description:
+      If regulator-min-microvolt and regulator-max-microvolt do not both
+      define a range, the supply is treated as fixed and only its voltage
+      can be read.
     properties:
       compatible:
         const: arm,vexpress-volt
@@ -157,6 +161,8 @@ patternProperties:
     required:
       - compatible
       - arm,vexpress-sysreg,func
+      - regulator-name
+      - regulator-always-on
 
   "^amp-.+$":
     type: object
diff --git a/Documentation/devicetree/bindings/hwmon/vexpress.txt b/Documentation/devicetree/bindings/hwmon/vexpress.txt
deleted file mode 100644
index 4a4df4ffc460..000000000000
--- a/Documentation/devicetree/bindings/hwmon/vexpress.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-Versatile Express hwmon sensors
--------------------------------
-
-Requires node properties:
-- "compatible" value : one of
-	"arm,vexpress-volt"
-	"arm,vexpress-amp"
-	"arm,vexpress-temp"
-	"arm,vexpress-power"
-	"arm,vexpress-energy"
-- "arm,vexpress-sysreg,func" when controlled via vexpress-sysreg
-  (see Documentation/devicetree/bindings/arm/vexpress-config.yaml
-  for more details)
-
-Optional node properties:
-- label : string describing the monitored value
-
-Example:
-	energy at 0 {
-		compatible = "arm,vexpress-energy";
-		arm,vexpress-sysreg,func = <13 0>;
-		label = "A15 Jcore";
-	};
diff --git a/Documentation/devicetree/bindings/regulator/vexpress.txt b/Documentation/devicetree/bindings/regulator/vexpress.txt
deleted file mode 100644
index 1c2e92c7831e..000000000000
--- a/Documentation/devicetree/bindings/regulator/vexpress.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-Versatile Express voltage regulators
-------------------------------------
-
-Requires node properties:
-- "compatible" value: "arm,vexpress-volt"
-- "arm,vexpress-sysreg,func" when controlled via vexpress-sysreg
-  (see Documentation/devicetree/bindings/arm/vexpress-config.yaml
-  for more details)
-
-Required regulator properties:
-- "regulator-name"
-- "regulator-always-on"
-
-Optional regulator properties:
-- "regulator-min-microvolt"
-- "regulator-max-microvolt"
-
-See Documentation/devicetree/bindings/regulator/regulator.txt
-for more details about the regulator properties.
-
-When no "regulator-[min|max]-microvolt" properties are defined,
-the device is treated as fixed (or rather "read-only") regulator.
-
-Example:
-	volt at 0 {
-		compatible = "arm,vexpress-volt";
-		arm,vexpress-sysreg,func = <2 0>;
-		regulator-name = "Cores";
-		regulator-min-microvolt = <800000>;
-		regulator-max-microvolt = <1050000>;
-		regulator-always-on;
-	};
-- 
2.43.0