linux-kernel - [v4 1/5] dt-bindings: mfd: Add aspeed pwm-tach binding

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Date:   Wed, 23 Nov 2022 14:16:31 +0800
From:   Billy Tsai <billy_tsai@...eedtech.com>
To:     <jdelvare@...e.com>, <linux@...ck-us.net>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <joel@....id.au>,
        <andrew@...id.au>, <lee@...nel.org>, <thierry.reding@...il.com>,
        <u.kleine-koenig@...gutronix.de>, <corbet@....net>,
        <p.zabel@...gutronix.de>, <billy_tsai@...eedtech.com>,
        <linux-hwmon@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-aspeed@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
        <linux-pwm@...r.kernel.org>, <linux-doc@...r.kernel.org>
Subject: [v4 1/5] dt-bindings: mfd: Add aspeed pwm-tach binding

Add device binding for aspeed pwm-tach device which is a multi-function
device include pwm and tach function.

Signed-off-by: Billy Tsai <billy_tsai@...eedtech.com>
---
 .../bindings/mfd/aspeed,ast2600-pwm-tach.yaml | 73 +++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.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..e2a7be2e0a18
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml
@@ -0,0 +1,73 @@
+# 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
+
+description: |
+  The PWM Tach controller is represented as a multi-function device which
+  includes:
+    PWM
+    Tach
+
+maintainers:
+  - Billy Tsai <billy_tsai@...eedtech.com>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - aspeed,ast2600-pwm-tach
+      - const: syscon
+      - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  pwm:
+    type: object
+    $ref: "/schemas/pwm/aspeed,ast2600-pwm.yaml"
+
+  tach:
+    type: object
+    $ref: "/schemas/hwmon/aspeed,ast2600-tach.yaml"
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - resets
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/ast2600-clock.h>
+    pwm_tach: pwm-tach@...10000 {
+      compatible = "aspeed,ast2600-pwm-tach", "syscon", "simple-mfd";
+      reg = <0x1e610000 0x100>;
+      clocks = <&syscon ASPEED_CLK_AHB>;
+      resets = <&syscon ASPEED_RESET_PWM>;
+
+      pwm: pwm {
+        compatible = "aspeed,ast2600-pwm";
+        #pwm-cells = <3>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_pwm0_default>;
+      };
+
+      tach: tach {
+        compatible = "aspeed,ast2600-tach";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_tach0_default>;
+      };
+    };
-- 
2.25.1