From patchwork Thu Jul 11 23:46:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 13731189 Received: from gate2.alliedtelesis.co.nz (gate2.alliedtelesis.co.nz [202.36.163.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D7CA15217E for ; Thu, 11 Jul 2024 23:46:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.36.163.20 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720741582; cv=none; b=NBlwZgUf/VAm5CnH5vDdy/ShGpMuNp9JGFECTMNX0uxj1r3LMikby4BCpkS8vmNJG8uWY07sClgSiRYOgiMCwPeCBruAQIcHiLmucU3jbKOcUBLTZosIkPEy2Ak89lYpNtuHvV/oKCw74AjYyiklC8ipuiB0U0e/DaO+MhwQ9Ds= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720741582; c=relaxed/simple; bh=L7u64Rt38kesaLb/o2TulvuPEP0M5BedulVmbUr6rqA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oD/1xM72koQWWajl97u6LRJvC0zT/dSXOAHK3v+I4k7Ea8nx2tHPfAxvEE3dN97E2EAhRy6eiGOgZQX/9mhwE6FPmaFUF8oo0oammd239XbGC+zL8JrOSZKnLgcrr1b/wY+GvlPh9FB6iBVG9UKjEEmrmj/hm1P2g2Z9UP49vA0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=alliedtelesis.co.nz; spf=pass smtp.mailfrom=alliedtelesis.co.nz; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b=0Ff6iu6V; arc=none smtp.client-ip=202.36.163.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=alliedtelesis.co.nz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alliedtelesis.co.nz Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b="0Ff6iu6V" Received: from svr-chch-seg1.atlnz.lc (mmarshal3.atlnz.lc [10.32.18.43]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by gate2.alliedtelesis.co.nz (Postfix) with ESMTPS id 90EC22C05DB; Fri, 12 Jul 2024 11:46:16 +1200 (NZST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1720741576; bh=oVb+M2qq3CiAzzn2CgRisOAaF/17YCYSDMxeBi/C588=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0Ff6iu6VcOUeiWJMhbWl02i4UVxwD7sJHRJ1/uFjwVNSkYQ8/f5X04r33JCQtyRo7 ioLOEJA00xG6AzuSfQDg9RAgznzUIWF+fkv579jKfJTGbxzQF+A9Ao3jtRbWTy2jRw BuIbZeIIikn4y4F6kemm8f76+Ysnv5PFGDiXZLUX5JqHrvSU3Fi1mionxxglgUJgCA EkRbYQkE2t0mLYQ/g/iRZ/vSTFLfWucjr3IIUpsaiAypgkdKRGT7pHnYSB7TAlyNzr bSr7N98mi7nlBH0VVBXAiRbW+SFZHCNVeRPbevJ4p37h7xv6GmHf/fyNxRnmzMdS2F zKyNJg1cMRxCg== Received: from pat.atlnz.lc (Not Verified[10.32.16.33]) by svr-chch-seg1.atlnz.lc with Trustwave SEG (v8,2,6,11305) id ; Fri, 12 Jul 2024 11:46:16 +1200 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.30]) by pat.atlnz.lc (Postfix) with ESMTP id 3EC4013EE5B; Fri, 12 Jul 2024 11:46:16 +1200 (NZST) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id 39FD6280019; Fri, 12 Jul 2024 11:46:16 +1200 (NZST) From: Chris Packham To: jdelvare@suse.com, linux@roeck-us.net, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, ukleinek@kernel.org Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, Chris Packham Subject: [PATCH v5 1/3] dt-bindings: hwmon: Add adt7475 fan/pwm properties Date: Fri, 12 Jul 2024 11:46:12 +1200 Message-ID: <20240711234614.3104839-2-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240711234614.3104839-1-chris.packham@alliedtelesis.co.nz> References: <20240711234614.3104839-1-chris.packham@alliedtelesis.co.nz> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SEG-SpamProfiler-Analysis: v=2.4 cv=PIKs+uqC c=1 sm=1 tr=0 ts=66906ec8 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=4kmOji7k6h8A:10 a=nd0hpPEdzzsPhCuWCasA:9 a=3ZKOabzyN94A:10 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat Add fan child nodes that allow describing the connections for the ADT7475 to the fans it controls. This also allows setting some initial values for the pwm duty cycle and frequency. Signed-off-by: Chris Packham Reviewed-by: Rob Herring (Arm) --- Notes: Changes in v5: - Use nanoseconds for PWM frequency and duty cycle as per existing conventions for PWMs - Set flags to 0 in example to match adi,pwm-active-state setting Changes in v4: - 0 is not a valid frequency value Changes in v3: - Use the pwm provider/consumer bindings Changes in v2: - Document 0 as a valid value (leaves hardware as-is) .../devicetree/bindings/hwmon/adt7475.yaml | 35 ++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/hwmon/adt7475.yaml b/Documentation/devicetree/bindings/hwmon/adt7475.yaml index 051c976ab711..df2b5b889e4d 100644 --- a/Documentation/devicetree/bindings/hwmon/adt7475.yaml +++ b/Documentation/devicetree/bindings/hwmon/adt7475.yaml @@ -51,6 +51,24 @@ properties: enum: [0, 1] default: 1 + "#pwm-cells": + const: 4 + description: | + Number of cells in a PWM specifier. + - 0: The PWM channel + - 1: The PWM period in nanoseconds + - 90909091 (11 Hz) + - 71428571 (14 Hz) + - 45454545 (22 Hz) + - 34482759 (29 Hz) + - 28571429 (35 Hz) + - 22727273 (44 Hz) + - 17241379 (58 Hz) + - 11363636 (88 Hz) + - 44444 (22 kHz) + - 2: PWM flags 0 or PWM_POLARITY_INVERTED + - 3: The default PWM duty cycle in nanoseconds + patternProperties: "^adi,bypass-attenuator-in[0-4]$": description: | @@ -81,6 +99,10 @@ patternProperties: - smbalert# - gpio + "^fan-[0-9]+$": + $ref: fan-common.yaml# + unevaluatedProperties: false + required: - compatible - reg @@ -89,11 +111,12 @@ additionalProperties: false examples: - | + #include i2c { #address-cells = <1>; #size-cells = <0>; - hwmon@2e { + pwm: hwmon@2e { compatible = "adi,adt7476"; reg = <0x2e>; adi,bypass-attenuator-in0 = <1>; @@ -101,5 +124,15 @@ examples: adi,pwm-active-state = <1 0 1>; adi,pin10-function = "smbalert#"; adi,pin14-function = "tach4"; + #pwm-cells = <4>; + + /* PWMs at 22.5 kHz frequency, 50% duty*/ + fan-0 { + pwms = <&pwm 0 44444 0 22222>; + }; + + fan-1 { + pwms = <&pwm 2 44444 0 22222>; + }; }; };