From patchwork Mon Oct 25 18:05:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 12582573 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 230CCC433FE for ; Mon, 25 Oct 2021 18:06:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ED72760FBF for ; Mon, 25 Oct 2021 18:06:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233196AbhJYSIg (ORCPT ); Mon, 25 Oct 2021 14:08:36 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:41184 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231760AbhJYSIg (ORCPT ); Mon, 25 Oct 2021 14:08:36 -0400 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 19PI69Kr004910; Mon, 25 Oct 2021 13:06:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1635185169; bh=Yrd+yUTsbGR89/ahPzrGQ0VTae+vnDUBOTH+jtgHwAI=; h=From:To:CC:Subject:Date; b=SzwAZBYDdmRMf9SVzBRaPjl5FaKKVAcBsco8Z8Yu0zNZDLHVX61N+nJQWBO3r/dYa WlhyINMQkXHK+2a6F1lnfWX32WixqdLgwktGsIE8IgMIsqywPSWIM+mE/swbehkLp0 rp/ViIec5NAdzf3Kg6q9abtVNkZlgqtuWNNW21Mg= Received: from DFLE103.ent.ti.com (dfle103.ent.ti.com [10.64.6.24]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 19PI69pm071970 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 25 Oct 2021 13:06:09 -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 15.1.2308.14; Mon, 25 Oct 2021 13:06:09 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) 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 15.1.2308.14 via Frontend Transport; Mon, 25 Oct 2021 13:06:08 -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 19PI65CT056165; Mon, 25 Oct 2021 13:06:06 -0500 From: Keerthy To: , , , , CC: , , , Subject: [PATCH v3 0/4] thermal: k3_j72xx_bandgap: Add the bandgap driver support Date: Mon, 25 Oct 2021 23:35:59 +0530 Message-ID: <20211025180603.22290-1-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. Changes in v3: * Removed static look up tables & added functions to dynamically generate them. Changes in v2: * Fixed DT binding errors. 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 | 62 ++ .../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 | 635 ++++++++++++++++++ 9 files changed, 842 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