From patchwork Wed Apr 20 10:20:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Lu X-Patchwork-Id: 564237 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 1D934C43217 for ; Wed, 20 Apr 2022 10:21:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377573AbiDTKXr (ORCPT ); Wed, 20 Apr 2022 06:23:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1377612AbiDTKXp (ORCPT ); Wed, 20 Apr 2022 06:23:45 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A59C722BD9; Wed, 20 Apr 2022 03:20:57 -0700 (PDT) X-UUID: e87945b3112d4a4f8bb22443e10d11b1-20220420 X-UUID: e87945b3112d4a4f8bb22443e10d11b1-20220420 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 358565788; Wed, 20 Apr 2022 18:20:50 +0800 Received: from mtkexhb02.mediatek.inc (172.21.101.103) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 20 Apr 2022 18:20:48 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkexhb02.mediatek.inc (172.21.101.103) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 20 Apr 2022 18:20:48 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 20 Apr 2022 18:20:48 +0800 From: Roger Lu To: Matthias Brugger , Enric Balletbo Serra , Kevin Hilman , Rob Herring , Nicolas Boichat , Stephen Boyd , Philipp Zabel CC: Fan Chen , HenryC Chen , Xiaoqing Liu , Charles Yang , Angus Lin , Mark Rutland , Nishanth Menon , Roger Lu , , , , , , , Guenter Roeck , Jia-wei Chang Subject: [PATCH v24 0/7] soc: mediatek: SVS: introduce MTK SVS Date: Wed, 20 Apr 2022 18:20:37 +0800 Message-ID: <20220420102044.10832-1-roger.lu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The Smart Voltage Scaling(SVS) engine is a piece of hardware which calculates suitable SVS bank voltages to OPP voltage table. Then, DVFS driver could apply those SVS bank voltages to PMIC/Buck when receiving OPP_EVENT_ADJUST_VOLTAGE. 1. SVS driver uses OPP adjust event in [1] to update OPP table voltage part. 2. SVS driver gets thermal/GPU device by node [2][3] and CPU device by get_cpu_device(). After retrieving subsys device, SVS driver calls device_link_add() to make sure probe/suspend callback priority. [1] https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git/commit/?h=opp/linux-next&id=25cb20a212a1f989385dfe23230817e69c62bee5 [2] https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git/commit/?h=opp/linux-next&id=b325ce39785b1408040d90365a6ab1aa36e94f87 [3] https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux.git/commit/?h=v5.16-next/dts64&id=a8168cebf1bca1b5269e8a7eb2626fb76814d6e2 Change since v23: - Change wording from "Mediatek" to "MediaTek" (uppercase T) in mtk-svs.yaml. - Use cpuidle_pause_and_lock() to prevent system from entering cpuidle instead of applying pm_qos APIs. - Add kfree() at the end of svs_probe() when encountering probe fail. - Change MODULE_LICENSE from "GPL v2" to "GPL". - Add nvmem_cell_put() in error handling when nvmem_cell_read() encounters fail. Roger Lu (7): [v24,1/7] dt-bindings: soc: mediatek: add mtk svs dt-bindings [v24,2/7] arm64: dts: mt8183: add svs device information [v24,3/7] soc: mediatek: SVS: introduce MTK SVS engine [v24,4/7] soc: mediatek: SVS: add monitor mode [v24,5/7] soc: mediatek: SVS: add debug commands [v24,6/7] dt-bindings: soc: mediatek: add mt8192 svs dt-bindings [v24,7/7] soc: mediatek: SVS: add mt8192 SVS GPU driver .../bindings/soc/mediatek/mtk-svs.yaml | 91 + arch/arm64/boot/dts/mediatek/mt8183.dtsi | 16 + drivers/soc/mediatek/Kconfig | 10 + drivers/soc/mediatek/Makefile | 1 + drivers/soc/mediatek/mtk-svs.c | 2403 +++++++++++++++++ 5 files changed, 2521 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml create mode 100644 drivers/soc/mediatek/mtk-svs.c Reviewed-by: Kevin Hilman