dt-bindings: PCI: Convert fsl,mpc83xx-pcie to YAML

Formalise the binding for the PCI controllers in the Freescale MPC8xxx
chip family. Information about PCI-X-specific properties was taken from
fsl,pci.txt. The examples were taken from mpc8315erdb.dts and
xpedite5200_xmon.dts.

Signed-off-by: J. Neuschäfer <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Krzysztof Wilczyński <[e-mail]>

Documentation/devicetree/bindings/pci/fsl,mpc8xxx-pci.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/pci/fsl,mpc8xxx-pci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale MPC83xx PCI/PCI-X/PCIe controllers
+
+description:
+  Binding for the PCI/PCI-X/PCIe host bridges on MPC8xxx SoCs
+
+maintainers:
+  - J. Neuschäfer <[e-mail]>
+
+allOf:
+  - $ref: /schemas/pci/pci-host-bridge.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - fsl,mpc8314-pcie
+          - fsl,mpc8349-pci
+          - fsl,mpc8540-pci
+          - fsl,mpc8548-pcie
+          - fsl,mpc8641-pcie
+      - items:
+          - enum:
+              - fsl,mpc8308-pcie
+              - fsl,mpc8315-pcie
+              - fsl,mpc8377-pcie
+              - fsl,mpc8378-pcie
+          - const: fsl,mpc8314-pcie
+      - items:
+          - const: fsl,mpc8360-pci
+          - const: fsl,mpc8349-pci
+      - items:
+          - const: fsl,mpc8540-pcix
+          - const: fsl,mpc8540-pci
+
+  reg:
+    minItems: 1
+    items:
+      - description: internal registers
+      - description: config space access registers
+
+  clock-frequency: true
+
+  interrupts:
+    items:
+      - description: Consolidated PCI interrupt
+
+  fsl,pci-agent-force-enum:
+    type: boolean
+    description:
+      Typically any Freescale PCI-X bridge hardware strapped into Agent mode is
+      prevented from enumerating the bus. The PrPMC form-factor requires all
+      mezzanines to be PCI-X Agents, but one per system may still enumerate the
+      bus.
+
+      This property allows a PCI-X bridge to be used for bus enumeration
+      despite being strapped into Agent mode.
+
+required:
+  - reg
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    pcie@e0009000 {
+        compatible = "fsl,mpc8315-pcie", "fsl,mpc8314-pcie";
+        reg = <0xe0009000 0x00001000>;
+        ranges = <0x02000000 0 0xa0000000 0xa0000000 0 0x10000000
+                  0x01000000 0 0x00000000 0xb1000000 0 0x00800000>;
+        #address-cells = <3>;
+        #size-cells = <2>;
+        #interrupt-cells = <1>;
+        device_type = "pci";
+        bus-range = <0 255>;
+        interrupt-map-mask = <0xf800 0 0 7>;
+        interrupt-map = <0 0 0 1 &ipic 1 IRQ_TYPE_LEVEL_LOW
+                         0 0 0 2 &ipic 1 IRQ_TYPE_LEVEL_LOW
+                         0 0 0 3 &ipic 1 IRQ_TYPE_LEVEL_LOW
+                         0 0 0 4 &ipic 1 IRQ_TYPE_LEVEL_LOW>;
+        clock-frequency = <0>;
+    };
+
+  - |
+    pci@ef008000 {
+        compatible = "fsl,mpc8540-pcix", "fsl,mpc8540-pci";
+        reg = <0xef008000 0x1000>;
+        ranges = <0x02000000 0 0x80000000 0x80000000 0 0x20000000
+                  0x01000000 0 0x00000000 0xd0000000 0 0x01000000>;
+        #interrupt-cells = <1>;
+        #size-cells = <2>;
+        #address-cells = <3>;
+        device_type = "pci";
+        clock-frequency = <33333333>;
+        interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
+        interrupt-map = </* IDSEL */
+                         0xe000 0 0 1 &mpic 2 1
+                         0xe000 0 0 2 &mpic 3 1>;
+        interrupts-extended = <&mpic 24 2>;
+        bus-range = <0 0>;
+        fsl,pci-agent-force-enum;
+    };
+
+...

Documentation/devicetree/bindings/pci/fsl,pci.txt

···
-* Bus Enumeration by Freescale PCI-X Agent
-
-Typically any Freescale PCI-X bridge hardware strapped into Agent mode
-is prevented from enumerating the bus. The PrPMC form-factor requires
-all mezzanines to be PCI-X Agents, but one per system may still
-enumerate the bus.
-
-The property defined below will allow a PCI-X bridge to be used for bus
-enumeration despite being strapped into Agent mode.
-
-Required properties:
-- fsl,pci-agent-force-enum : There is no value associated with this
-  property. The property itself is treated as a boolean.
-
-Example:
-
-	/* PCI-X bridge known to be PrPMC Monarch */
-	pci0: pci@ef008000 {
-		fsl,pci-agent-force-enum;
-		#interrupt-cells = <1>;
-		#size-cells = <2>;
-		#address-cells = <3>;
-		compatible = "fsl,mpc8540-pcix", "fsl,mpc8540-pci";
-		device_type = "pci";
-		...
-		...
-	};