From patchwork Tue Apr 7 05:51:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 11477557 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 31EDC14DD for ; Tue, 7 Apr 2020 05:51:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0F6A220747 for ; Tue, 7 Apr 2020 05:51:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="W2AY5epz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726591AbgDGFvk (ORCPT ); Tue, 7 Apr 2020 01:51:40 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:41518 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725817AbgDGFvk (ORCPT ); Tue, 7 Apr 2020 01:51:40 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 0375pPNn091413; Tue, 7 Apr 2020 00:51:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1586238685; bh=hR+ITKXScejGN8Vg1z7eaq/mNwFLIoSkIvJwYBN9RZ0=; h=From:To:CC:Subject:Date; b=W2AY5epzcUvMVbJXVRs58V3R/6exPLe69ANPE6sJpr0EnJYtkWlwYmhPDdllXiSOt iNmKap+3WjuG8vFM8mfHj/gixzgFuurQneKuEk1t9TX8av2tWIEdUy0JO57uYoz+Cc sDHzVhEDi3b9Qxbpr1mMVwW/eEkNLsEcwW3paWa4= Received: from DLEE105.ent.ti.com (dlee105.ent.ti.com [157.170.170.35]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 0375pPMZ041443 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 7 Apr 2020 00:51:25 -0500 Received: from DLEE109.ent.ti.com (157.170.170.41) by DLEE105.ent.ti.com (157.170.170.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Tue, 7 Apr 2020 00:51:25 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Tue, 7 Apr 2020 00:51:25 -0500 Received: from a0393675ula.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 0375pLdL017972; Tue, 7 Apr 2020 00:51:22 -0500 From: Keerthy To: , , CC: , , , , , , , Subject: [PATCH v6 0/4] thermal: k3: Add support for bandgap sensors Date: Tue, 7 Apr 2020 11:21:12 +0530 Message-ID: <20200407055116.16082-1-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 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add VTM thermal support. In the Voltage Thermal Management Module(VTM), K3 AM654 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. Add support for bandgap sensors. Currently reading temperatures is supported. Changes in v6: * Removed bunch of unused #defines and couple of redundant variables. * Reordered patches a bit. * Minor reordering in dt binding patch. Changes in v5: * Removed thermal work function which was unused. * Removed unused preve_tenmp and a couple more struct variables. * Removed couple of redundant header function include. Changes in v4: * Fixed comments from Daniel to remove trend function. * Mostly cleaned up all the unused variables. * Driver from bool to tristate. Changes in v3: * Fixed errors seen with: dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml Changes in v2: * Fixed yaml errors * renamed am654-industrial-thermal.dtsi to k3-am654-industrial-thermal.dtsi to follow the convention for k3 family. Keerthy (4): dt-bindings: thermal: k3: Add VTM bindings documentation thermal: k3: Add support for bandgap sensors arm64: dts: ti: am65-wakeup: Add VTM node arm64: dts: ti: am654: Add thermal zones .../bindings/thermal/ti,am654-thermal.yaml | 56 ++++ arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi | 11 + .../dts/ti/k3-am654-industrial-thermal.dtsi | 45 +++ drivers/thermal/Kconfig | 10 + drivers/thermal/Makefile | 1 + drivers/thermal/k3_bandgap.c | 264 ++++++++++++++++++ 6 files changed, 387 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml create mode 100644 arch/arm64/boot/dts/ti/k3-am654-industrial-thermal.dtsi create mode 100644 drivers/thermal/k3_bandgap.c