dt-bindings: intel,ixp4xx-expansion-bus: split out peripheral properties

The properties of devices in IXP4xx expansion bus need to be also
applied to actual devices' bindings.  Prepare for this by splitting them
to separate intel,ixp4xx-expansion-peripheral-props binding, just like
other memory-controller peripheral properties.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Rob Herring <[email protected]>

4 files changed, 84 insertions, 65 deletions

diff --git a/Documentation/devicetree/bindings/bus/intel,ixp4xx-expansion-bus-controller.yaml b/Documentation/devicetree/bindings/memory-controllers/intel,ixp4xx-expansion-bus-controller.yaml
index 5fb4e7bfa4da..188db821dff3 100644
--- a/Documentation/devicetree/bindings/bus/intel,ixp4xx-expansion-bus-controller.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/intel,ixp4xx-expansion-bus-controller.yaml
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/bus/intel,ixp4xx-expansion-bus-controller.yaml#
+$id: http://devicetree.org/schemas/memory-controllers/intel,ixp4xx-expansion-bus-controller.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Intel IXP4xx Expansion Bus Controller
@@ -56,69 +56,7 @@ patternProperties:
     description: Devices attached to chip selects are represented as
       subnodes.
     type: object
-
-    properties:
-      intel,ixp4xx-eb-t1:
-        description: Address timing, extend address phase with n cycles.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        maximum: 3
-
-      intel,ixp4xx-eb-t2:
-        description: Setup chip select timing, extend setup phase with n cycles.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        maximum: 3
-
-      intel,ixp4xx-eb-t3:
-        description: Strobe timing, extend strobe phase with n cycles.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        maximum: 15
-
-      intel,ixp4xx-eb-t4:
-        description: Hold timing, extend hold phase with n cycles.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        maximum: 3
-
-      intel,ixp4xx-eb-t5:
-        description: Recovery timing, extend recovery phase with n cycles.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        maximum: 15
-
-      intel,ixp4xx-eb-cycle-type:
-        description: The type of cycles to use on the expansion bus for this
-          chip select. 0 = Intel cycles, 1 = Motorola cycles, 2 = HPI cycles.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [0, 1, 2]
-
-      intel,ixp4xx-eb-byte-access-on-halfword:
-        description: Allow byte read access on half word devices.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [0, 1]
-
-      intel,ixp4xx-eb-hpi-hrdy-pol-high:
-        description: Set HPI HRDY polarity to active high when using HPI.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [0, 1]
-
-      intel,ixp4xx-eb-mux-address-and-data:
-        description: Multiplex address and data on the data bus.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [0, 1]
-
-      intel,ixp4xx-eb-ahb-split-transfers:
-        description: Enable AHB split transfers.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [0, 1]
-
-      intel,ixp4xx-eb-write-enable:
-        description: Enable write cycles.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [0, 1]
-
-      intel,ixp4xx-eb-byte-access:
-        description: Expansion bus uses only 8 bits. The default is to use
-          16 bits.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        enum: [0, 1]
+    $ref: /schemas/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml#
 
 required:
   - compatible
diff --git a/Documentation/devicetree/bindings/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml b/Documentation/devicetree/bindings/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml
new file mode 100644
index 000000000000..d1479a7b9c8d
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Peripheral properties for Intel IXP4xx Expansion Bus
+
+description:
+  The IXP4xx expansion bus controller handles access to devices on the
+  memory-mapped expansion bus on the Intel IXP4xx family of system on chips,
+  including IXP42x, IXP43x, IXP45x and IXP46x.
+
+maintainers:
+  - Linus Walleij <[email protected]>
+
+properties:
+  intel,ixp4xx-eb-t1:
+    description: Address timing, extend address phase with n cycles.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 3
+
+  intel,ixp4xx-eb-t2:
+    description: Setup chip select timing, extend setup phase with n cycles.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 3
+
+  intel,ixp4xx-eb-t3:
+    description: Strobe timing, extend strobe phase with n cycles.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 15
+
+  intel,ixp4xx-eb-t4:
+    description: Hold timing, extend hold phase with n cycles.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 3
+
+  intel,ixp4xx-eb-t5:
+    description: Recovery timing, extend recovery phase with n cycles.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 15
+
+  intel,ixp4xx-eb-cycle-type:
+    description: The type of cycles to use on the expansion bus for this
+      chip select. 0 = Intel cycles, 1 = Motorola cycles, 2 = HPI cycles.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2]
+
+  intel,ixp4xx-eb-byte-access-on-halfword:
+    description: Allow byte read access on half word devices.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1]
+
+  intel,ixp4xx-eb-hpi-hrdy-pol-high:
+    description: Set HPI HRDY polarity to active high when using HPI.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1]
+
+  intel,ixp4xx-eb-mux-address-and-data:
+    description: Multiplex address and data on the data bus.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1]
+
+  intel,ixp4xx-eb-ahb-split-transfers:
+    description: Enable AHB split transfers.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1]
+
+  intel,ixp4xx-eb-write-enable:
+    description: Enable write cycles.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1]
+
+  intel,ixp4xx-eb-byte-access:
+    description: Expansion bus uses only 8 bits. The default is to use
+      16 bits.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1]
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/memory-controllers/mc-peripheral-props.yaml b/Documentation/devicetree/bindings/memory-controllers/mc-peripheral-props.yaml
index 53ae995462db..5acfcad12bb7 100644
--- a/Documentation/devicetree/bindings/memory-controllers/mc-peripheral-props.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/mc-peripheral-props.yaml
@@ -34,5 +34,6 @@ required:
 # The controller specific properties go here.
 allOf:
   - $ref: st,stm32-fmc2-ebi-props.yaml#
+  - $ref: intel,ixp4xx-expansion-peripheral-props.yaml#
 
 additionalProperties: true
diff --git a/MAINTAINERS b/MAINTAINERS
index 04d8cc852e77..06d5be2c713c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2326,7 +2326,7 @@ M:	Krzysztof Halasa <[email protected]>
 L:	[email protected] (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
-F:	Documentation/devicetree/bindings/bus/intel,ixp4xx-expansion-bus-controller.yaml
+F:	Documentation/devicetree/bindings/memory-controllers/intel,ixp4xx-expansion*
 F:	Documentation/devicetree/bindings/gpio/intel,ixp4xx-gpio.txt
 F:	Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
 F:	Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml