From patchwork Tue May 17 17:29:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 574112 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 F2266C4332F for ; Tue, 17 May 2022 17:29:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351436AbiEQR3n (ORCPT ); Tue, 17 May 2022 13:29:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351428AbiEQR3n (ORCPT ); Tue, 17 May 2022 13:29:43 -0400 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37B0B36B71; Tue, 17 May 2022 10:29:41 -0700 (PDT) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 24HHTaQK003334; Tue, 17 May 2022 12:29:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1652808576; bh=deD3EIje9Vyk7QFSHVfQAyeVCw4AXB48R+C+3n6GWRY=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=q0DMtRozylqsCsX1qt3C73A+iz8Jq80paOwGlzbF0YOHctcqMsVo2a6syy7F1eeEn OmIx5mUbL4LTLxkCZS6BZIh33m9cOfo8mcroi+6X8jrKhbnRlZsV9YEEVP0jnlnjTT 43IqCI0wb27HeUL9SgiJut4vDasCgoBLT14jFPic= Received: from DLEE102.ent.ti.com (dlee102.ent.ti.com [157.170.170.32]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 24HHTa5m108805 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 17 May 2022 12:29:36 -0500 Received: from DLEE107.ent.ti.com (157.170.170.37) by DLEE102.ent.ti.com (157.170.170.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Tue, 17 May 2022 12:29:35 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DLEE107.ent.ti.com (157.170.170.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Tue, 17 May 2022 12:29:35 -0500 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 24HHTRYE079003; Tue, 17 May 2022 12:29:32 -0500 From: Keerthy To: , , , , , CC: , , , , , Subject: [PATCH v9 1/2] dt-bindings: thermal: k3-j72xx: Add VTM bindings documentation Date: Tue, 17 May 2022 22:59:19 +0530 Message-ID: <20220517172920.10857-2-j-keerthy@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220517172920.10857-1-j-keerthy@ti.com> References: <20220517172920.10857-1-j-keerthy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add VTM bindings documentation. In the Voltage Thermal Management Module(VTM), K3 J72XX supplies a voltage reference and a temperature sensor feature that are gathered in the band gap voltage and temperature sensor (VBGAPTS) module. The band gap provides current and voltage reference for its internal circuits and other analog IP blocks. The analog-to-digital converter (ADC) produces an output value that is proportional to the silicon temperature. Signed-off-by: Keerthy Reviewed-by: Rob Herring Reviewed-by: Krzysztof Kozlowski --- .../bindings/thermal/ti,j72xx-thermal.yaml | 63 +++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml diff --git a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml new file mode 100644 index 000000000000..c74f124ebfc0 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/ti,j72xx-thermal.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Texas Instruments J72XX VTM (DTS) binding + +maintainers: + - Keerthy + +properties: + compatible: + enum: + - ti,j721e-vtm + - ti,j7200-vtm + + reg: + items: + - description: VTM cfg1 register space + - description: VTM cfg2 register space + - description: VTM efuse register space + + power-domains: + maxItems: 1 + + "#thermal-sensor-cells": + const: 1 + +required: + - compatible + - reg + - power-domains + - "#thermal-sensor-cells" + +additionalProperties: false + +examples: + - | + #include + wkup_vtm0: thermal-sensor@42040000 { + compatible = "ti,j721e-vtm"; + reg = <0x42040000 0x350>, + <0x42050000 0x350>, + <0x43000300 0x10>; + power-domains = <&k3_pds 154 TI_SCI_PD_EXCLUSIVE>; + #thermal-sensor-cells = <1>; + }; + + mpu_thermal: mpu-thermal { + polling-delay-passive = <250>; /* milliseconds */ + polling-delay = <500>; /* milliseconds */ + thermal-sensors = <&wkup_vtm0 0>; + + trips { + mpu_crit: mpu-crit { + temperature = <125000>; /* milliCelsius */ + hysteresis = <2000>; /* milliCelsius */ + type = "critical"; + }; + }; + }; +...