From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65C18C4727E for ; Thu, 1 Oct 2020 05:40:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2575021D7D for ; Thu, 1 Oct 2020 05:40:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725902AbgJAFkR (ORCPT ); Thu, 1 Oct 2020 01:40:17 -0400 Received: from mga06.intel.com ([134.134.136.31]:19677 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725878AbgJAFkR (ORCPT ); Thu, 1 Oct 2020 01:40:17 -0400 IronPort-SDR: IrKFuQn1OVViZz93d1ze19Cyy9orIn0ngl4DUXHUf7dLm7Dh16cjtJXicb1pHoh/XZ/uxRVkop KaKVBQIHEjZg== X-IronPort-AV: E=McAfee;i="6000,8403,9760"; a="224244671" X-IronPort-AV: E=Sophos;i="5.77,323,1596524400"; d="scan'208";a="224244671" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2020 22:40:15 -0700 IronPort-SDR: RGcFAqSGK3zzjKCyRT12onpaJaB9Q7H1P2LlxqgY9Zv5TeTFnSsMpm7BDIUvon5IC95O1g5NOa Se4zB8D0v1hg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,323,1596524400"; d="scan'208";a="514552231" Received: from ubuntu18.png.intel.com ([10.88.229.38]) by fmsmga006.fm.intel.com with ESMTP; 30 Sep 2020 22:40:12 -0700 From: vijayakannan.ayyathurai@intel.com To: thierry.reding@gmail.com, u.kleine-koenig@pengutronix.de, robh+dt@kernel.org Cc: linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, wan.ahmad.zainie.wan.mohamad@intel.com, andriy.shevchenko@linux.intel.com, mgross@linux.intel.com, lakshmi.bai.raja.subramanian@intel.com, vijayakannan.ayyathurai@intel.com Subject: [PATCH v9 0/2] Add PWM support for Intel Keem Bay SoC Date: Thu, 1 Oct 2020 13:37:49 +0800 Message-Id: <20201001053751.10405-1-vijayakannan.ayyathurai@intel.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Vijayakannan Ayyathurai Hi, This patch set enables the support for PWM in the Intel Keem Bay SoC. Keem Bay is an ARM based SoC, and the GPIO module allows configuration of 6 PWM outputs. Patch 1 adds the PWM driver and Patch 2 is for the required Device Tree bindings documentation. This driver was tested on the Keem Bay evaluation module board. Thank you. Regards, Vijay Changes since v8: - Fix the compilation error reported by kernel test robot. - Add the tag Reported-by: kernel test robot - Minor correction in the pwm low time calculation formula. - Rebase with 5.9-rc7 Changes since v7: - Change the dependency as ARCH_KEEMBAY instead of ARM64 in Kconfig. - Use DIV_ROUND_DOWN_ULL instead of DIV_ROUND_CLOSEST_ULL. - Update the right formula as per Uwe. - List the tags in chronological order. - Add clk_disable_unprepare in the error paths. Changes since v6: - Add reviewed-by tag Changes since v5: - Reorder symbols/Kconfig in drivers/pwm/Kconfig and drivers/pwm/Makefile - Use "Limitations" for consistency - Add clk_prepare_enable() - Reorder keembay_pwm_get_state() function call - Rework if conditional for channel disablement in .apply() - Remove channel disabling from .probe(), and clear LEADIN register bits in .apply instead - Update commit message for Patch 1 Changes since v4: - Add co-developed-by tag - Include mod_devicetable.h and remove of.h - Update comment with correct calulation for high/low time - Fix missing return from dev_err_probe Changes since v3: - Removed variable for address and calculate in place instead - Utilized u32_replace_bits() when updating KMB_PWM_LEADIN_OFFSET - Utilized dev_err_probe() for error reporting - Updated comments to use physical units - Updated error check for pwmchip_add() Changes since v2: - Include documentation about HW limitation/behaviour - Use hex values for KMB_PWM_COUNT_MAX - Redefine register macros - Utilize FIELD_GET/FIELD_PREP for calculating pwm_l/h_count and pwm_count - Round up duty cycle/period values - Get current hardware state in .apply instead of cached values - Do a polarity check before .enabled - Round high time/low time to closest value - Set enable bit in KMB_PWM_LEADIN_OFFSET to 0 in probe - Correct the naming for MODULE_ALIAS - Add additionalProperties: false in DT bindings Changes since v1: - Updated licensing info, "clocks" property and example in DT bindings - Updated name of DT bindings document to match compatible string - Removed 1 patch for addition of new sysfs attribute "count" - Added support for COMPILE_TEST in Kconfig - Updated naming of defines and regmap attribute - Updated calculation of waveform high time and low time - Added range checking for waveform high/low time - Implemented .get_state - Removed register writes for lead-in and count values (left to default) - Updated register access to single-access - Folded keembay_pwm_enable/disable_channel, keembay_pwm_config_period/duty_cycle, and keembay_pwm_config into keembay_pwm_apply - Updated error messages/error codes - Removed pwm_disable from keembay_pwm_remove - Removed clk_prepare/clk_enable/clk_disable from driver Lai, Poey Seng (1): pwm: Add PWM driver for Intel Keem Bay Vineetha G. Jaya Kumaran (1): dt-bindings: pwm: keembay: Add bindings for Intel Keem Bay PWM .../bindings/pwm/intel,keembay-pwm.yaml | 47 ++++ drivers/pwm/Kconfig | 9 + drivers/pwm/Makefile | 1 + drivers/pwm/pwm-keembay.c | 230 ++++++++++++++++++ 4 files changed, 287 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml create mode 100644 drivers/pwm/pwm-keembay.c base-commit: a1b8638ba1320e6684aa98233c15255eb803fac7 prerequisite-patch-id: 0a348762b660d0d817b8e70cc71647e83173c78c prerequisite-patch-id: 0c6072cfe492b078c44ec864b8f9d1c76eada93b prerequisite-patch-id: 12b93428ee51a3d92ca973b928c0e0989f5d585e -- 2.17.1