From patchwork Tue Oct 25 19:15:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bryan Brattlof X-Patchwork-Id: 618617 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A240C38A2D for ; Tue, 25 Oct 2022 19:15:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232000AbiJYTPc (ORCPT ); Tue, 25 Oct 2022 15:15:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229952AbiJYTPb (ORCPT ); Tue, 25 Oct 2022 15:15:31 -0400 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3715D7B596; Tue, 25 Oct 2022 12:15:30 -0700 (PDT) Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 29PJFJ7b114083; Tue, 25 Oct 2022 14:15:19 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1666725319; bh=ZL+YBJQnQSuukUMqpWoTNGCHm/b9bnX/oYmoOE+d/FI=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=OKckoL/GfszSOf8nC78uXgGuGM54L9GiYSrrW6i9/k5QJQsmxC1e7lOxR4gN7xN2u xVtSxCra31wWCVz/YFvHj18BVZF2/dw2MnPC+Wa2jW+tFH9o0WdUF2s3BihTFmP9kQ lr3eVbz0IqppJcBkX7mp9qCx3TnTPEiJCLa141qY= Received: from DFLE103.ent.ti.com (dfle103.ent.ti.com [10.64.6.24]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 29PJFJDd065990 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 25 Oct 2022 14:15:19 -0500 Received: from DFLE107.ent.ti.com (10.64.6.28) by DFLE103.ent.ti.com (10.64.6.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.6; Tue, 25 Oct 2022 14:15:19 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.6 via Frontend Transport; Tue, 25 Oct 2022 14:15:19 -0500 Received: from localhost (ileaxei01-snat.itg.ti.com [10.180.69.5]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 29PJFJbX038872; Tue, 25 Oct 2022 14:15:19 -0500 From: Bryan Brattlof To: "Rafael J. Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Rob Herring , Krzysztof Kozlowski , Nishanth Menon , Vignesh Raghavendra , Tero Kristo CC: Keerthy , Linux PM , Device Trees , LKML , LKML ARM , Bryan Brattlof Subject: [PATCH v2 05/11] dt-bindings: thermal: k3-j72xx: elaborate on binding description Date: Tue, 25 Oct 2022 14:15:09 -0500 Message-ID: <20221025191515.9151-6-bb@ti.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221025191515.9151-1-bb@ti.com> References: <20221025191515.9151-1-bb@ti.com> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1844; h=from:subject; bh=X0Gh04bGx605RJeJrzQxigJ9CmhRVnqOURTu0JyzGYk=; b=owNCWmg5MUFZJlNZOWG3gQAAcn///77Pf////l/XLb/v/tvruz978P3uvvbz8XsZvZJ+j/SwARsr B2k00aDQDQNDQAAGQZGQDQDQaAANDEBkwIGgAAAAeoAAbSDTRmp6m2qHQAaAaABoxGmg0BoaDIaA9I ZMgADQNANNG1NADNQDQG0JkDRoeKBkAZBoZQep6mTINGgDQyBiA00DAmhoANBiNABkZBkAyDIaGjQG QBkANNA9QNGmjIAg775YQYWGC/iiIwpkEAttmJGCwEMBul41oBi14bzmVinKERBshcHg3a31TuCY5M TVKNjWOYqa/w5Y5ulEDTUbuSuEHRel89F1Vl8IoUWPb0inrrCUgmViG/X25ACoHtm/scRZo5frcWVA DgmCpoGQSJcw2/pNT37GINJi7TJUnGkIYDzJ2ayfE51S5x9IFkxcgeD2XHhK5xlpSM3RdaxExWh2sf +uuMQvROfQ45LEXTA24LCTwvfZlxAOZhuWjE9eJpOLgshOPaowmYvP96WXsHEESZAJ+rLdCshlJIoM G1aCo4bvPVv1iEuscLwKCZ7Bq/U/kvDPImYi8RDmIMkiyJjkYwW+yPgHNpUkitLR4rBnqlEbY4nJKZ tCQX5jBIkZb06dYxukxwhg9zLDdRmkm1oHPYAMy/gRaEBAgKgMQrSmSDg/xdyRThQkDlht4EA= X-Developer-Key: i=bb@ti.com; a=openpgp; fpr=D3D177E40A38DF4D1853FEEF41B90D5D71D56CE0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Elaborate on the function of this device node as well as some of the properties this node uses. Signed-off-by: Bryan Brattlof --- .../bindings/thermal/ti,j72xx-thermal.yaml | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml index c74f124ebfc00..3bb870a26872f 100644 --- a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml +++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml @@ -9,6 +9,19 @@ title: Texas Instruments J72XX VTM (DTS) binding maintainers: - Keerthy +description: | + The TI K3 family of SoCs typically have a Voltage & Thermal + Management (VTM) device to control up to 8 temperature diode + sensors to measure silicon junction temperatures from different + hotspots of the chip as well as provide temperature, interrupt + and alerting information. + + The following polynomial equation can then be used to convert + value returned by this device into a temperature in Celsius + + Temp(C) = (-9.2627e-12) * x^4 + (6.0373e-08) * x^3 + \ + (-1.7058e-04) * x^2 + (3.2512e-01) * x + (-4.9003e+01) + properties: compatible: enum: @@ -19,7 +32,11 @@ properties: items: - description: VTM cfg1 register space - description: VTM cfg2 register space - - description: VTM efuse register space + - description: | + A software trimming method must be applied to some Jacinto + devices to function properly. This eFuse region provides + the information needed for these SoCs to report + temperatures accurately. power-domains: maxItems: 1