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From:   Thippeswamy Havalige <thippeswamy.havalige@amd.com>
To:     <linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <krzysztof.kozlowski@linaro.org>
CC:     <bhelgaas@google.com>, <michals@xilinx.com>, <robh+dt@kernel.org>,
        <nagaradhesh.yeleswarapu@amd.com>, <bharat.kumar.gogada@amd.com>,
        Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Subject: [PATCH v3 2/2] dt-bindings: PCI: xilinx-nwl: Convert to YAML schemas of Xilinx NWL PCIe Root Port Bridge
Date:   Fri, 4 Nov 2022 10:11:35 +0530
Message-ID: <20221104044135.469797-2-thippeswamy.havalige@amd.com>
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Convert to YAML schemas for Xilinx NWL PCIe Root Port Bridge
dt binding.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
---
 .../bindings/pci/xilinx-nwl-pcie.txt          |  73 ---------
 .../bindings/pci/xlnx,nwl-pcie.yaml           | 152 ++++++++++++++++++
 2 files changed, 152 insertions(+), 73 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt
 create mode 100644 Documentation/devicetree/bindings/pci/xlnx,nwl-pcie.yaml

diff --git a/Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt b/Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt
deleted file mode 100644
index f56f8c58c5d9..000000000000
--- a/Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt
+++ /dev/null
@@ -1,73 +0,0 @@
-* Xilinx NWL PCIe Root Port Bridge DT description
-
-Required properties:
-- compatible: Should contain "xlnx,nwl-pcie-2.11"
-- #address-cells: Address representation for root ports, set to <3>
-- #size-cells: Size representation for root ports, set to <2>
-- #interrupt-cells: specifies the number of cells needed to encode an
-	interrupt source. The value must be 1.
-- reg: Should contain Bridge, PCIe Controller registers location,
-	configuration space, and length
-- reg-names: Must include the following entries:
-	"breg": bridge registers
-	"pcireg": PCIe controller registers
-	"cfg": configuration space region
-- device_type: must be "pci"
-- interrupts: Should contain NWL PCIe interrupt
-- interrupt-names: Must include the following entries:
-	"msi1, msi0": interrupt asserted when an MSI is received
-	"intx": interrupt asserted when a legacy interrupt is received
-	"misc": interrupt asserted when miscellaneous interrupt is received
-- interrupt-map-mask and interrupt-map: standard PCI properties to define the
-	mapping of the PCI interface to interrupt numbers.
-- ranges: ranges for the PCI memory regions (I/O space region is not
-	supported by hardware)
-	Please refer to the standard PCI bus binding document for a more
-	detailed explanation
-- msi-controller: indicates that this is MSI controller node
-- msi-parent:  MSI parent of the root complex itself
-- legacy-interrupt-controller: Interrupt controller device node for Legacy
-	interrupts
-	- interrupt-controller: identifies the node as an interrupt controller
-	- #interrupt-cells: should be set to 1
-	- #address-cells: specifies the number of cells needed to encode an
-		address. The value must be 0.
-
-Optional properties:
-- dma-coherent: present if DMA operations are coherent
-- clocks: Input clock specifier. Refer to common clock bindings
-
-Example:
-++++++++
-
-nwl_pcie: pcie@fd0e0000 {
-	#address-cells = <3>;
-	#size-cells = <2>;
-	compatible = "xlnx,nwl-pcie-2.11";
-	#interrupt-cells = <1>;
-	msi-controller;
-	device_type = "pci";
-	interrupt-parent = <&gic>;
-	interrupts = <0 114 4>, <0 115 4>, <0 116 4>, <0 117 4>, <0 118 4>;
-	interrupt-names = "msi0", "msi1", "intx", "dummy", "misc";
-	interrupt-map-mask = <0x0 0x0 0x0 0x7>;
-	interrupt-map = <0x0 0x0 0x0 0x1 &pcie_intc 0x1>,
-			<0x0 0x0 0x0 0x2 &pcie_intc 0x2>,
-			<0x0 0x0 0x0 0x3 &pcie_intc 0x3>,
-			<0x0 0x0 0x0 0x4 &pcie_intc 0x4>;
-
-	msi-parent = <&nwl_pcie>;
-	reg = <0x0 0xfd0e0000 0x0 0x1000>,
-	      <0x0 0xfd480000 0x0 0x1000>,
-	      <0x80 0x00000000 0x0 0x1000000>;
-	reg-names = "breg", "pcireg", "cfg";
-	ranges = <0x02000000 0x00000000 0xe0000000 0x00000000 0xe0000000 0x00000000 0x10000000  /* non-prefetchable memory */
-		  0x43000000 0x00000006 0x00000000 0x00000006 0x00000000 0x00000002 0x00000000>;/* prefetchable memory */
-
-	pcie_intc: legacy-interrupt-controller {
-		interrupt-controller;
-		#address-cells = <0>;
-		#interrupt-cells = <1>;
-	};
-
-};
diff --git a/Documentation/devicetree/bindings/pci/xlnx,nwl-pcie.yaml b/Documentation/devicetree/bindings/pci/xlnx,nwl-pcie.yaml
new file mode 100644
index 000000000000..e3484cc704e5
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/xlnx,nwl-pcie.yaml
@@ -0,0 +1,152 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/xlnx,nwl-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx NWL PCIe Root Port Bridge
+
+maintainers:
+  - Thippeswamy Havalige <thippeswamy.havalige@amd.com>
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
+
+properties:
+  compatible:
+    const: xlnx,nwl-pcie-2.11
+
+  reg:
+    items:
+      - description: PCIe bridge registers location.
+      - description: PCIe Controller registers location.
+      - description: PCIe Configuration space region.
+
+  reg-names:
+    items:
+      - const: breg
+      - const: pcireg
+      - const: cfg
+
+  interrupts:
+    items:
+      - description: msi0 interrupt asserted when an MSI is received
+      - description: msi1 interrupt asserted when an MSI is received
+      - description: interrupt asserted when a legacy interrupt is received
+      - description: unused interrupt(dummy)
+      - description: interrupt asserted when miscellaneous interrupt is received
+
+  interrupt-names:
+    minItems: 4
+    items:
+      - const: misc
+      - const: dummy
+      - const: intx
+      - const: msi1
+      - const: msi0
+
+  interrupt-map-mask:
+    items:
+      - const: 0
+      - const: 0
+      - const: 0
+      - const: 7
+
+  "#interrupt-cells":
+    const: 1
+
+  msi-controller:
+    description: Identifies the node as an MSI controller.
+
+  msi-parent:
+    description: MSI controller the device is capable of using.
+
+  interrupt-map:
+    maxItems: 4
+
+  power-domains:
+    maxItems: 1
+
+  iommus:
+    maxItems: 1
+
+  dma-coherent:
+    description: Optional,present if DMA operations are coherent
+
+  clocks:
+    description: Optional,Input clock specifier. Refer to common clock bindings
+
+  legacy-interrupt-controller:
+    description: Interrupt controller node for handling legacy PCI interrupts.
+    type: object
+    properties:
+      "#address-cells":
+        const: 0
+
+      "#interrupt-cells":
+        const: 1
+
+      "interrupt-controller": true
+
+    required:
+      - '#address-cells'
+      - '#interrupt-cells'
+      - interrupt-controller
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - "#interrupt-cells"
+  - interrupt-map
+  - interrupt-map-mask
+  - msi-controller
+  - power-domains
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/power/xlnx-zynqmp-power.h>
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+        nwl_pcie: pcie@fd0e0000 {
+            compatible = "xlnx,nwl-pcie-2.11";
+            reg = <0x0 0xfd0e0000 0x0 0x1000>,
+                  <0x0 0xfd480000 0x0 0x1000>,
+                  <0x80 0x00000000 0x0 0x1000000>;
+            reg-names = "breg", "pcireg", "cfg";
+            ranges = <0x02000000 0x0 0xe0000000 0x0 0xe0000000 0x0 0x10000000>,
+                     <0x43000000 0x00000006 0x0 0x00000006 0x0 0x00000002 0x0>;
+            #address-cells = <3>;
+            #size-cells = <2>;
+            #interrupt-cells = <1>;
+            msi-controller;
+            device_type = "pci";
+            interrupt-parent = <&gic>;
+            interrupts = <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 116 IRQ_TYPE_EDGE_RISING>,
+                         <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 115 IRQ_TYPE_EDGE_RISING>,
+                         <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>;
+            interrupt-names = "misc", "dummy", "intx", "msi1", "msi0";
+            interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+            interrupt-map = <0x0 0x0 0x0 0x1 &pcie_intc 0x1>,
+                            <0x0 0x0 0x0 0x2 &pcie_intc 0x2>,
+                            <0x0 0x0 0x0 0x3 &pcie_intc 0x3>,
+                            <0x0 0x0 0x0 0x4 &pcie_intc 0x4>;
+            msi-parent = <&nwl_pcie>;
+            power-domains = <&zynqmp_firmware PD_PCIE>;
+            iommus = <&smmu 0x4d0>;
+            pcie_intc: legacy-interrupt-controller {
+                interrupt-controller;
+                #address-cells = <0>;
+                #interrupt-cells = <1>;
+            };
+        };
+    };
-- 
2.25.1