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Subject[v2 1/2] dt-bindings: Add bindings for aspeed pwm-tach and pwm.
Date
This patch adds device bindings for aspeed pwm-tach device which is a
multi-function device include pwn and tach function and pwm device which
should be the sub-node of pwm-tach device.

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Change-Id: I18d9dea14c3a04e1b7e38ffecd49d45917b9b545
---
.../bindings/mfd/aspeed,ast2600-pwm-tach.yaml | 60 +++++++++++++++++++
.../bindings/pwm/aspeed,ast2600-pwm.yaml | 44 ++++++++++++++
2 files changed, 104 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml
create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml

diff --git a/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml
new file mode 100644
index 000000000000..eaf8bdf8d44e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2021 ASPEED, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/aspeed,ast2600-pwm-tach.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PWM Tach controller Device Tree Bindings
+
+description: |
+ The PWM Tach controller is represented as a multi-function device which
+ includes:
+ PWM
+ Tach
+
+maintainers:
+ - Billy Tsai <billy_tsai@aspeedtech.com>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - aspeed,ast2600-pwm-tach
+ - const: syscon
+ - const: simple-mfd
+ reg:
+ maxItems: 1
+ "#address-cells":
+ const: 1
+ "#size-cells":
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - "#address-cells"
+ - "#size-cells"
+
+additionalProperties:
+ type: object
+
+examples:
+ - |
+ pwm_tach: pwm_tach@1e610000 {
+ compatible = "aspeed,ast2600-pwm-tach", "syscon", "simple-mfd";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x1e610000 0x100>;
+
+ pwm: pwm@0 {
+ compatible = "aspeed,ast2600-pwm";
+ #pwm-cells = <3>;
+ reg = <0x0 0x100>;
+ };
+
+ tach: tach@1 {
+ compatible = "aspeed,ast2600-tach";
+ reg = <0x0 0x100>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
new file mode 100644
index 000000000000..97923e68ccb9
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2021 ASPEED, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/aspeed,ast2600-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASPEED AST2600 PWM controller
+
+maintainers:
+ - Billy Tsai <billy_tsai@aspeedtech.com>
+
+description: |
+ The ASPEED PWM controller can support upto 16 PWM outputs.
+
+properties:
+ compatible:
+ enum:
+ - aspeed,ast2600-pwm
+
+ "#pwm-cells":
+ const: 3
+
+ reg:
+ maxItems: 1
+
+additionalProperties: false
+
+examples:
+ - |
+ // The PWM should be a subnode of a "aspeed,ast2600-pwm-tach" compatible
+ // node.
+ pwm_tach: pwm_tach@1e610000 {
+ compatible = "aspeed,ast2600-pwm-tach", "syscon", "simple-mfd";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x1e610000 0x100>;
+
+ pwm: pwm@0 {
+ compatible = "aspeed,ast2600-pwm";
+ #pwm-cells = <3>;
+ reg = <0x0 0x100>;
+ };
+ };
--
2.25.1
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