From patchwork Tue Dec 5 14:06:41 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: linux-kernel-dev X-Patchwork-Id: 844754 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-rtc-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3yrk8Y1NDQz9t8J for ; Wed, 6 Dec 2017 01:07:25 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752770AbdLEOHY convert rfc822-to-8bit (ORCPT ); Tue, 5 Dec 2017 09:07:24 -0500 Received: from internet2.beckhoff.com ([194.25.186.210]:53082 "EHLO Internet2.beckhoff.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752732AbdLEOHU (ORCPT ); Tue, 5 Dec 2017 09:07:20 -0500 Received: from lbs1.beckhoff.com (172.17.64.137) by NT-Mail06.beckhoff.com (10.1.0.30) with Microsoft SMTP Server (TLS) id 14.3.301.0; Tue, 5 Dec 2017 15:07:07 +0100 From: To: Shawn Guo , Sascha Hauer , Alessandro Zummo , Alexandre Belloni CC: Patrick Bruenn , Rob Herring , Mark Rutland , "open list:REAL TIME CLOCK (RTC) SUBSYSTEM" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , open list , Fabio Estevam , Juergen Borleis , Noel Vellemans , Russell King , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" , Philippe Ombredanne , =?utf-8?q?Lothar_Wa=C3=9Fmann?= Subject: [PATCH v2 0/5] add mxc driver for i.MX53 SRTC Date: Tue, 5 Dec 2017 15:06:41 +0100 Message-ID: <20171205140646.30367-1-linux-kernel-dev@beckhoff.com> X-Mailer: git-send-email 2.11.0 MIME-Version: 1.0 X-Originating-IP: [172.17.64.137] X-OLX-Disclaimer: Done Sender: linux-rtc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.org From: Patrick Bruenn Neither rtc-imxdi, rtc-mxc nor rtc-snvs are compatible with i.MX53. This is driver enables support for the low power domain SRTC features: - 32-bit MSB of non-rollover time counter - 32-bit alarm register Based on: http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/drivers/rtc/rtc-mxc_v2.c?h=imx_2.6.35_11.09.01 v2: - have seperate patches for dt-binding, CONFIG option, imx53.dtsi and driver - add SPDX-License-Identifier and cleanup copyright notice - replace __raw_readl/writel() with readl/writel() - fix PM_SLEEP callbacks - add CONFIG_RTC_DRV_MXC_V2 to build rtc-mxc_v2.c - remove misleading or obvious comments and fix style of the remaining - avoid endless loop while waiting for hw - implement consistent locking; make spinlock a member of dev struct - enable clk only for register accesses - remove all udelay() calls since they are obsolete or redundant (we are already waiting for register flags to change) - init platform_data before registering irq callback - let set_time() fail, when 32 bit rtc counter exceeded - make names more consistent - cleanup and reorder includes - cleanup and remove unused defines To: Alessandro Zummo To: Alexandre Belloni Cc: Rob Herring Cc: Mark Rutland (maintainer:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Cc: linux-rtc@vger.kernel.org (open list:REAL TIME CLOCK (RTC) SUBSYSTEM) Cc: devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Cc: linux-kernel@vger.kernel.org (open list) Cc: Fabio Estevam Cc: Juergen Borleis Cc: Noel Vellemans Cc: Shawn Guo Cc: Sascha Hauer (maintainer:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE) Cc: Russell King (maintainer:ARM PORT) Cc: linux-arm-kernel@lists.infradead.org (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE) Cc: Philippe Ombredanne Cc: Lothar Waßmann Patrick Bruenn (5): dt-bindings: rtc: add bindings for i.MX53 SRTC ARM: dts: imx53: add srtc node rtc: mxc_v2: add driver for i.MX53 SRTC ARM: imx_v4_v5_defconfig: enable RTC_DRV_MXC_V2 rtc: add mxc driver for i.MX53 SRTC .../devicetree/bindings/rtc/rtc-mxc_v2.txt | 17 + arch/arm/boot/dts/imx53.dtsi | 4 +- arch/arm/configs/imx_v4_v5_defconfig | 1 + drivers/rtc/Kconfig | 10 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-mxc_v2.c | 433 +++++++++++++++++++++ 6 files changed, 463 insertions(+), 3 deletions(-) create mode 100644 Documentation/devicetree/bindings/rtc/rtc-mxc_v2.txt create mode 100644 drivers/rtc/rtc-mxc_v2.c