Convert the Calxeda DDR memory controller binding to DT schema format
using json-schema.
Although this technically covers the whole DRAM controller, the
intention to use it only for error reporting and mapping fault addresses
to DRAM chips.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 .../memory-controllers/calxeda-ddr-ctrlr.txt  | 16 --------
 .../memory-controllers/calxeda-ddr-ctrlr.yaml | 41 +++++++++++++++++++
 2 files changed, 41 insertions(+), 16 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/memory-controllers/calxeda-ddr-ctrlr.txt
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/calxeda-ddr-ctrlr.yaml

diff --git a/Documentation/devicetree/bindings/memory-controllers/calxeda-ddr-ctrlr.txt b/Documentation/devicetree/bindings/memory-controllers/calxeda-ddr-ctrlr.txt
deleted file mode 100644
index 049675944b78..000000000000
--- a/Documentation/devicetree/bindings/memory-controllers/calxeda-ddr-ctrlr.txt
+++ /dev/null

@@ -1,16 +0,0 @@
-Calxeda DDR memory controller
-
-Properties:
-- compatible : Should be:
-  - "calxeda,hb-ddr-ctrl" for ECX-1000
-  - "calxeda,ecx-2000-ddr-ctrl" for ECX-2000
-- reg : Address and size for DDR controller registers.
-- interrupts : Interrupt for DDR controller.
-
-Example:
-
-	memory-controller@fff00000 {
-		compatible = "calxeda,hb-ddr-ctrl";
-		reg = <0xfff00000 0x1000>;
-		interrupts = <0 91 4>;
-	};

diff --git a/Documentation/devicetree/bindings/memory-controllers/calxeda-ddr-ctrlr.yaml b/Documentation/devicetree/bindings/memory-controllers/calxeda-ddr-ctrlr.yaml
new file mode 100644
index 000000000000..c5153127e722
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/calxeda-ddr-ctrlr.yaml

@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/calxeda-ddr-ctrlr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Calxeda DDR memory controller binding
+
+description: |
+  The Calxeda DDR memory controller is initialised and programmed by the
+  firmware, but an OS might want to read its registers for error reporting
+  purposes and to learn about the DRAM topology.
+
+maintainers:
+  - Andre Przywara <andre.przywara@arm.com>
+
+properties:
+  compatible:
+    items:
+    - enum:
+        - calxeda,hb-ddr-ctrl
+        - calxeda,ecx-2000-ddr-ctrl