From patchwork Wed Mar 18 08:27:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 11444719 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 8E45317E6 for ; Wed, 18 Mar 2020 08:28:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D4772077C for ; Wed, 18 Mar 2020 08:28:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="Wygx8oz3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726733AbgCRI2Q (ORCPT ); Wed, 18 Mar 2020 04:28:16 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:44672 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727553AbgCRI2Q (ORCPT ); Wed, 18 Mar 2020 04:28:16 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 02I8Rqmr001637; Wed, 18 Mar 2020 03:27:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1584520072; bh=jGa+GktmlDStzmVOTq3HJze3DKU2zZ2qyKfIt2MEWjc=; h=From:To:CC:Subject:Date; b=Wygx8oz3RJHv1iJ6DRys9Y87owAhd3IFR9xLS2cN+aPsuz1K2g9Qa00nh91zFoCpm t9Ix7pSF99oCumf33EBy9GE2M5lm60rr8DI31ExqpxFPaTgB98tJtg8F/lGWu/ohBz xs5s1DKmrIjl7GGX1tO3e/z06ZeWQdlHh5j4oKho= Received: from DLEE105.ent.ti.com (dlee105.ent.ti.com [157.170.170.35]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id 02I8RqVJ025738; Wed, 18 Mar 2020 03:27:52 -0500 Received: from DLEE112.ent.ti.com (157.170.170.23) 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; Wed, 18 Mar 2020 03:27:52 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE112.ent.ti.com (157.170.170.23) 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; Wed, 18 Mar 2020 03:27:52 -0500 Received: from a0393675ula.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 02I8Rmol073942; Wed, 18 Mar 2020 03:27:48 -0500 From: Keerthy To: , , CC: , , , , , , , Subject: [PATCH v4 0/4] thermal: k3: Add support for bandgap sensors Date: Wed, 18 Mar 2020 13:57:35 +0530 Message-ID: <20200318082739.9833-1-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 and trend computing is supported. 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: am654: Add thermal zones arm64: dts: ti: am6: Add VTM node .../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 | 11 + drivers/thermal/Makefile | 1 + drivers/thermal/k3_bandgap.c | 288 ++++++++++++++++++ 6 files changed, 412 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