From: Chanh Nguyen <chanh@os.amperecomputing.com> To: Jean Delvare <jdelvare@suse.com>, Guenter Roeck <linux@roeck-us.net>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, Justin Ledford <justinledford@google.com>, devicetree@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, OpenBMC Maillist <openbmc@lists.ozlabs.org>, Open Source Submission <patches@amperecomputing.com> Cc: Phong Vo <phong@os.amperecomputing.com>, Thang Nguyen <thang@os.amperecomputing.com>, Quan Nguyen <quan@os.amperecomputing.com>, Chanh Nguyen <chanh@os.amperecomputing.com> Subject: [PATCH v2 3/3] dt-bindings: hwmon: max31790: Add maxim,pwmout-pin-as-tach-input property Date: Sun, 14 Apr 2024 11:22:46 +0700 [thread overview] Message-ID: <20240414042246.8681-4-chanh@os.amperecomputing.com> (raw) In-Reply-To: <20240414042246.8681-1-chanh@os.amperecomputing.com> The max31790 supports six pins, which are dedicated PWM outputs. Any of the six PWM outputs can also be configured to serve as tachometer inputs, allowing for up to 12 tachometer fans to be monitored. Add a new vendor-specific property, 'maxim,pwmout-pin-as-tach-input', to allow PWMOUT to become a TACH input. An array of six integers responds to six PWM channels for configuring the PWM to TACH mode. When set to 0, the associated PWMOUT produces a PWM waveform for control of fan speed. When set to 1, PWMOUT becomes a TACH input. Signed-off-by: Chanh Nguyen <chanh@os.amperecomputing.com> --- Changes in v2: - Update the vendor property name to "maxim,pwmout-pin-as-tach-input" [Rob] - Update commit message [Krzysztof] --- .../devicetree/bindings/hwmon/maxim,max31790.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml index a561e5a3e9e4..2d4f50bc7c41 100644 --- a/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml +++ b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml @@ -30,6 +30,16 @@ properties: resets: maxItems: 1 + maxim,pwmout-pin-as-tach-input: + description: | + An array of six integers responds to six PWM channels for + configuring the pwm to tach mode. + When set to 0, the associated PWMOUT produces a PWM waveform for + control of fan speed. When set to 1, PWMOUT becomes a TACH input + $ref: /schemas/types.yaml#/definitions/uint8-array + maxItems: 6 + minItems: 6 + required: - compatible - reg @@ -48,5 +58,6 @@ examples: fan-controller@20 { compatible = "maxim,max31790"; reg = <0x20>; + maxim,pwmout-pin-as-tach-input = /bits/ 8 <0 0 0 0 1 1>; }; }; -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Chanh Nguyen <chanh@os.amperecomputing.com> To: Jean Delvare <jdelvare@suse.com>, Guenter Roeck <linux@roeck-us.net>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, Justin Ledford <justinledford@google.com>, devicetree@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, OpenBMC Maillist <openbmc@lists.ozlabs.org>, Open Source Submission <patches@amperecomputing.com> Cc: Chanh Nguyen <chanh@os.amperecomputing.com>, Thang Nguyen <thang@os.amperecomputing.com>, Phong Vo <phong@os.amperecomputing.com>, Quan Nguyen <quan@os.amperecomputing.com> Subject: [PATCH v2 3/3] dt-bindings: hwmon: max31790: Add maxim,pwmout-pin-as-tach-input property Date: Sun, 14 Apr 2024 11:22:46 +0700 [thread overview] Message-ID: <20240414042246.8681-4-chanh@os.amperecomputing.com> (raw) In-Reply-To: <20240414042246.8681-1-chanh@os.amperecomputing.com> The max31790 supports six pins, which are dedicated PWM outputs. Any of the six PWM outputs can also be configured to serve as tachometer inputs, allowing for up to 12 tachometer fans to be monitored. Add a new vendor-specific property, 'maxim,pwmout-pin-as-tach-input', to allow PWMOUT to become a TACH input. An array of six integers responds to six PWM channels for configuring the PWM to TACH mode. When set to 0, the associated PWMOUT produces a PWM waveform for control of fan speed. When set to 1, PWMOUT becomes a TACH input. Signed-off-by: Chanh Nguyen <chanh@os.amperecomputing.com> --- Changes in v2: - Update the vendor property name to "maxim,pwmout-pin-as-tach-input" [Rob] - Update commit message [Krzysztof] --- .../devicetree/bindings/hwmon/maxim,max31790.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml index a561e5a3e9e4..2d4f50bc7c41 100644 --- a/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml +++ b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml @@ -30,6 +30,16 @@ properties: resets: maxItems: 1 + maxim,pwmout-pin-as-tach-input: + description: | + An array of six integers responds to six PWM channels for + configuring the pwm to tach mode. + When set to 0, the associated PWMOUT produces a PWM waveform for + control of fan speed. When set to 1, PWMOUT becomes a TACH input + $ref: /schemas/types.yaml#/definitions/uint8-array + maxItems: 6 + minItems: 6 + required: - compatible - reg @@ -48,5 +58,6 @@ examples: fan-controller@20 { compatible = "maxim,max31790"; reg = <0x20>; + maxim,pwmout-pin-as-tach-input = /bits/ 8 <0 0 0 0 1 1>; }; }; -- 2.17.1
next prev parent reply other threads:[~2024-04-14 4:23 UTC|newest] Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-04-14 4:22 [PATCH v2 0/3] Update the max31790 driver Chanh Nguyen 2024-04-14 4:22 ` Chanh Nguyen 2024-04-14 4:22 ` [PATCH v2 1/3] dt-bindings: hwmon: Add maxim max31790 bindings Chanh Nguyen 2024-04-14 4:22 ` Chanh Nguyen 2024-04-14 6:03 ` Krzysztof Kozlowski 2024-04-16 4:38 ` Chanh Nguyen 2024-04-16 4:38 ` Chanh Nguyen 2024-04-14 4:22 ` [PATCH v2 2/3] hwmon: (max31790): Support config PWM output becomes TACH Chanh Nguyen 2024-04-14 4:22 ` Chanh Nguyen 2024-04-14 8:03 ` Christophe JAILLET 2024-04-14 8:03 ` Christophe JAILLET 2024-04-16 5:27 ` Chanh Nguyen 2024-04-16 5:27 ` Chanh Nguyen 2024-04-16 17:39 ` Christophe JAILLET 2024-04-16 17:39 ` Christophe JAILLET 2024-04-17 2:54 ` Chanh Nguyen 2024-04-17 2:54 ` Chanh Nguyen 2024-04-14 4:22 ` Chanh Nguyen [this message] 2024-04-14 4:22 ` [PATCH v2 3/3] dt-bindings: hwmon: max31790: Add maxim,pwmout-pin-as-tach-input property Chanh Nguyen 2024-04-14 6:07 ` Krzysztof Kozlowski 2024-04-16 4:52 ` Chanh Nguyen 2024-04-16 4:52 ` Chanh Nguyen 2024-04-23 8:45 ` Chanh Nguyen 2024-04-23 8:45 ` Chanh Nguyen 2024-04-23 17:02 ` Conor Dooley 2024-04-23 17:02 ` Conor Dooley 2024-04-25 10:33 ` Chanh Nguyen 2024-04-25 10:33 ` Chanh Nguyen 2024-04-25 14:05 ` Guenter Roeck 2024-04-25 14:05 ` Guenter Roeck 2024-04-25 15:46 ` Krzysztof Kozlowski 2024-04-25 15:56 ` Conor Dooley 2024-04-25 15:56 ` Conor Dooley 2024-05-05 10:08 ` Chanh Nguyen 2024-05-05 10:08 ` Chanh Nguyen 2024-05-05 15:40 ` Guenter Roeck 2024-05-05 15:40 ` Guenter Roeck 2024-05-08 3:44 ` Chanh Nguyen 2024-05-08 3:44 ` Chanh Nguyen 2024-05-08 16:47 ` Conor Dooley 2024-05-08 16:47 ` Conor Dooley 2024-05-09 8:29 ` Krzysztof Kozlowski
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