linux-kernel - [PATCH 1/5] dt-bindings: MIPS: lantiq: Add documentation for the External Bus Unit

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Date:   Sat, 27 Jul 2019 19:53:11 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     tglx@...utronix.de, jason@...edaemon.net, maz@...nel.org,
        ralf@...ux-mips.org, paul.burton@...s.com, jhogan@...nel.org,
        robh+dt@...nel.org, linux-mips@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, mark.rutland@....com,
        john@...ozen.org, hauke@...ke-m.de,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH 1/5] dt-bindings: MIPS: lantiq: Add documentation for the External Bus Unit

Lantiq SoCs contain a so-called External Bus Unit.

It attaches PCI memory as well as NAND and NOR flash. Additioanlly it
contains an interrupt-controller for the PCI_INTA interrupt line.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
 .../bindings/mips/lantiq/lantiq,ebu.yaml      | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mips/lantiq/lantiq,ebu.yaml

diff --git a/Documentation/devicetree/bindings/mips/lantiq/lantiq,ebu.yaml b/Documentation/devicetree/bindings/mips/lantiq/lantiq,ebu.yaml
new file mode 100644
index 000000000000..0b0b27d0b64b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mips/lantiq/lantiq,ebu.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mips/lantiq/lantiq,ebu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lantiq External Bus Unit (EBU) bindings
+
+maintainers:
+  - Martin Blumenstingl <martin.blumenstingl@...glemail.com>
+
+properties:
+  compatible:
+    enum:
+      - lantiq,falcon-ebu
+      - lantiq,xway-ebu
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: The EBU module clock
+
+  interrupt-controller:
+    type: boolean
+
+  interrupt-cells:
+    const: 2
+
+  interrupts:
+    items:
+      - description: The EBU module interrupt line
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    memory-controller@...5300 {
+        compatible = "lantiq,xway-ebu";
+        reg = <0xe105300 0x100>;
+        clocks = <&pmu 10>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+        interrupt-parent = <&icu0>;
+        interrupts = <30>;
+    };
+...
-- 
2.22.0