[PATCH v4 2/2] dt-bindings: hpet: add loongson2 hpet

[Yinbo Zhu]

Add the loongson2 High Precision Event Timer (HPET) binding
with DT schema format using json-schema.

Signed-off-by: Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>
---
Change in v4: 
                1. Fixup the clock-names that replace apb-clk with apb.
                2. This patch need rely on clock patch, which patchwork  
                   link was "https://patchwork.kernel.org/project/linux-clk/list/?series=688892";.

 .../bindings/timer/loongson,ls2k-hpet.yaml    | 50 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/loongson,ls2k-hpet.yaml

diff --git a/Documentation/devicetree/bindings/timer/loongson,ls2k-hpet.yaml b/Documentation/devicetree/bindings/timer/loongson,ls2k-hpet.yaml
new file mode 100644
index 000000000000..9682d86e3339
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/loongson,ls2k-hpet.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/loongson,ls2k-hpet.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Loongson2 High Precision Event Timer (HPET)
+
+maintainers:
+  - Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>
+
+properties:
+  compatible:
+    const: loongson,ls2k-hpet
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: SoC apb clock
+
+  clock-names:
+    items:
+      - const: apb
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/loongson,ls2k-clk.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    timer@1fe24000 {
+        compatible = "loongson,ls2k-hpet";
+        reg = <0x1fe24000 0x15f>;
+        clocks = <&clk LOONGSON2_APB_CLK>;
+        clock-names = "apb";
+        interrupt-parent = <&liointc0>;
+        interrupts = <21 IRQ_TYPE_LEVEL_LOW>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index db29c1dc2d89..8cc541ce89b8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11919,6 +11919,7 @@ LOONGSON2 SOC SERIES HPET DRIVER
 M:	Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>
 L:	linux-kernel@xxxxxxxxxxxxxxx
 S:	Maintained
+F:	Documentation/devicetree/bindings/timer/loongson,ls2k-hpet.yaml
 F:	drivers/clocksource/loongson2_hpet.c
 
 LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI)
-- 
2.31.1