From patchwork Mon Oct 4 11:25:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 12533727 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F6CDC433F5 for ; Mon, 4 Oct 2021 11:26:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 08E92613A8 for ; Mon, 4 Oct 2021 11:26:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232879AbhJDL17 (ORCPT ); Mon, 4 Oct 2021 07:27:59 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:47906 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229945AbhJDL16 (ORCPT ); Mon, 4 Oct 2021 07:27:58 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 194BQ7vX088314; Mon, 4 Oct 2021 06:26:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1633346767; bh=Wd9Ef6hbv//1DAExpQPDwa8YX4HBhGeCroYIsXnSeq8=; h=From:To:CC:Subject:Date; b=cgdfQ3vgnR+kPhNdWcag/graVtQWKuiC3t4GcIlUibYkjaySi9Ac8eEXHqesGaEhe 9baMmS7I6LDDG+XDfrRvTsumbIAjNkGyzQ3n8Ou0IXXL94JAkbkN5czjCrPmnG8EK9 3ilp9QrgJqaUiNvjxwZKFo8eol5W8X46h4/WrC/s= Received: from DLEE107.ent.ti.com (dlee107.ent.ti.com [157.170.170.37]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 194BQ6sp034295 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 4 Oct 2021 06:26:06 -0500 Received: from DLEE100.ent.ti.com (157.170.170.30) 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; Mon, 4 Oct 2021 06:26:06 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE100.ent.ti.com (157.170.170.30) 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; Mon, 4 Oct 2021 06:26:06 -0500 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 194BQ381065426; Mon, 4 Oct 2021 06:26:03 -0500 From: Keerthy To: , , , , CC: , , , Subject: [PATCH 0/4] thermal: k3_j72xx_bandgap: Add the bandgap driver support Date: Mon, 4 Oct 2021 16:55:46 +0530 Message-ID: <20211004112550.27546-1-j-keerthy@ti.com> X-Mailer: git-send-email 2.17.1 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 thermal support. 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. Currently reading temperatures only is supported. There are no active/passive cooling agent supported. J721e SoCs have errata i2128: https://www.ti.com/lit/pdf/sprz455 The series also incorporates workaround for Errata i2128. Keerthy (4): dt-bindings: thermal: k3-j72xx: Add VTM bindings documentation arm64: dts: ti: j721e: Add VTM node arm64: dts: ti: j7200: Add VTM node thermal: k3_j72xx_bandgap: Add the bandgap driver support .../bindings/thermal/ti,j72xx-thermal.yaml | 58 ++ .../boot/dts/ti/k3-j7200-mcu-wakeup.dtsi | 9 + arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi | 45 + arch/arm64/boot/dts/ti/k3-j7200.dtsi | 4 + .../boot/dts/ti/k3-j721e-mcu-wakeup.dtsi | 9 + arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi | 73 ++ arch/arm64/boot/dts/ti/k3-j721e.dtsi | 4 + drivers/thermal/Makefile | 2 +- drivers/thermal/k3_j72xx_bandgap.c | 773 ++++++++++++++++++ 9 files changed, 976 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml create mode 100644 arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi create mode 100644 arch/arm64/boot/dts/ti/k3-j721e-thermal.dtsi create mode 100644 drivers/thermal/k3_j72xx_bandgap.c