[PATCH next v8 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910

[Weilong Chen <chenweilong@huawei.com>]

Add the new compatible for HiSilicon i2c.

Signed-off-by: Weilong Chen <chenweilong@huawei.com>
---
Change since v7:
- Fix yamllint errors, rename i2c-xxx to i2c-ascend910
Link: https://lore.kernel.org/all/166635752527.3428089.707277745439761591.robh@kernel.org/

 .../bindings/i2c/hisilicon,i2c-ascend910.yaml | 70 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 71 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml

diff --git a/Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml
new file mode 100644
index 000000000000..918825a3026b
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/i2c/hisilicon,i2c-ascend910.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: HiSilicon common I2C controller Device Tree Bindings
+
+maintainers:
+  - Yicong Yang <yangyicong@hisilicon.com>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    const: hisilicon,i2c-ascend910
+    description:
+      The HiSilicon common I2C controller can be used for many different
+      types of SoC such as Huawei Ascend AI series chips.
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-frequency:
+    default: 400000
+
+  i2c-sda-falling-time-ns:
+    default: 343
+
+  i2c-scl-falling-time-ns:
+    default: 203
+
+  i2c-sda-hold-time-ns:
+    default: 830
+
+  i2c-scl-rising-time-ns:
+    default: 365
+
+  i2c-digital-filter-width-ns:
+    default: 0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c@5038b0000 {
+      compatible = "hisilicon,i2c-ascend910";
+      reg = <0x38b0000 0x10000>;
+      interrupts = <0x0 120 0x4>;
+      i2c-sda-falling-time-ns = <56>;
+      i2c-scl-falling-time-ns = <56>;
+      i2c-sda-hold-time-ns = <56>;
+      i2c-scl-rising-time-ns = <56>;
+      i2c-digital-filter;
+      i2c-digital-filter-width-ns = <0x0>;
+      clocks = <&alg_clk>;
+      clock-frequency = <400000>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index ad32dc9c4822..5e5e4a3f5ada 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9211,6 +9211,7 @@ M:	Yicong Yang <yangyicong@hisilicon.com>
 L:	linux-i2c@vger.kernel.org
 S:	Maintained
 W:	https://www.hisilicon.com
+F:	Documentation/devicetree/bindings/i2c/hisilicon,i2c-ascend910.yaml
 F:	drivers/i2c/busses/i2c-hisi.c
 
 HISILICON LPC BUS DRIVER
-- 
2.31.GIT