[PATCH v2 06/12] dt-bindings: pci: Convert fsl,mpc83xx-pcie to YAML

J. Neuschäfer via B4 Relay
2025-02-07T21:30:36Z

From: "J. Neuschäfer" <j.ne@posteo.net>

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 <j.ne@posteo.net>
---

V2:
- merge fsl,pci.txt into fsl,mpc8xxx-pci.yaml
- regroup compatible strings, list single-item values in one enum
- trim subject line (remove "binding")
- fix property order to comply with dts coding style
---
.../devicetree/bindings/pci/fsl,mpc8xxx-pci.yaml | 115 +++++++++++++++++++++
Documentation/devicetree/bindings/pci/fsl,pci.txt | 27 -----
2 files changed, 115 insertions(+), 27 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/fsl,mpc8xxx-pci.yaml b/Documentation/devicetree/bindings/pci/fsl,mpc8xxx-pci.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..57c5503cec47e6e90ed2b09835bfad10309db927
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/fsl,mpc8xxx-pci.yaml
@@ -0,0 +1,115 @@
+# 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.
+ See also: Documentation/devicetree/bindings/pci/fsl,pci.txt
+
+maintainers:
+ - J. Neuschäfer <j.neuschaefer@gmx.net>
+
+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;
+ };
+
+
+...
diff --git a/Documentation/devicetree/bindings/pci/fsl,pci.txt b/Documentation/devicetree/bindings/pci/fsl,pci.txt
deleted file mode 100644
index d8ac4a768e7e65b465f83308cc918ec471309dcf..0000000000000000000000000000000000000000
--- a/Documentation/devicetree/bindings/pci/fsl,pci.txt
+++ /dev/null
@@ -1,27 +0,0 @@
-* 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";
- ...
- ...
- };

--
2.48.0.rc1.219.gb6b6757d772