在 2022/9/30 下午5:58, Krzysztof Kozlowski 写道:
On 30/09/2022 11:35, Yinbo Zhu wrote:
Add the loongson2k High Precision Event Timer (HPET) binding
with DT schema format using json-schema.
Signed-off-by: Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>
---
.../bindings/timer/loongson,ls2k-hpet.yaml | 41 +++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 42 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..1a8785076228
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/loongson,ls2k-hpet.yaml
@@ -0,0 +1,41 @@
+# 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: Loongson2k High Precision Event Timer (HPET)
+
+maintainers:
+ - Yinbo Zhu <zhuyinbo@xxxxxxxxxxx>
+
+properties:
+ compatible:
+ const: loongson,ls2k-hpet
+
+ reg:
+ maxItems: 1
+
+ clock-frequency: true
clock frequency of what? I assume it's too early to use common clock
framework and just get the clock?
The clock-frequency is 125000000, It doesn't support use common clock
framework and just get the clock from dts, and I refer
"arm,armv7m-systick" to add the clock-frequency information:
clock-frequency: true
oneOf:
- required:
- clocks
- required:
- clock-frequency
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clock-frequency
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ hpet0: hpet@1fe24000 {
Node name: timer
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
You can drop the "hpet0" label.
okay, I got it.
Best regards,
Krzysztof
