diff options
| author | Billy Tsai <billy_tsai@aspeedtech.com> | 2024-02-21 18:40:24 +0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2024-03-07 10:47:07 -0800 |
| commit | df9d235c300d143d319ff8373988ef213ec19024 (patch) | |
| tree | f2d0dc912a6d39a3527d66c5d031c4b6abc577be | |
| parent | 3b0ac1f90c44178b295432e1bf7ef05c2ca20014 (diff) | |
| download | lwn-df9d235c300d143d319ff8373988ef213ec19024.tar.gz lwn-df9d235c300d143d319ff8373988ef213ec19024.zip | |
dt-bindings: hwmon: Support Aspeed g6 PWM TACH Control
Document the compatible for aspeed,ast2600-pwm-tach device, which can
support up to 16 PWM outputs and 16 fan tach input.
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240221104025.1306227-3-billy_tsai@aspeedtech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| -rw-r--r-- | Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml new file mode 100644 index 000000000000..9e5ed901ae54 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2023 Aspeed, Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/aspeed,g6-pwm-tach.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ASPEED G6 PWM and Fan Tach controller + +maintainers: + - Billy Tsai <billy_tsai@aspeedtech.com> + +description: | + The ASPEED PWM controller can support up to 16 PWM outputs. + The ASPEED Fan Tacho controller can support up to 16 fan tach input. + They are independent hardware blocks, which are different from the + previous version of the ASPEED chip. + +properties: + compatible: + enum: + - aspeed,ast2600-pwm-tach + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + "#pwm-cells": + const: 3 + +patternProperties: + "^fan-[0-9]+$": + $ref: fan-common.yaml# + unevaluatedProperties: false + required: + - tach-ch + +required: + - reg + - clocks + - resets + - "#pwm-cells" + - compatible + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/aspeed-clock.h> + pwm_tach: pwm-tach-controller@1e610000 { + compatible = "aspeed,ast2600-pwm-tach"; + reg = <0x1e610000 0x100>; + clocks = <&syscon ASPEED_CLK_AHB>; + resets = <&syscon ASPEED_RESET_PWM>; + #pwm-cells = <3>; + + fan-0 { + tach-ch = /bits/ 8 <0x0>; + pwms = <&pwm_tach 0 40000 0>; + }; + + fan-1 { + tach-ch = /bits/ 8 <0x1 0x2>; + pwms = <&pwm_tach 1 40000 0>; + }; + }; |