From patchwork Sun Nov 7 20:29:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Protsenko X-Patchwork-Id: 517855 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB105C433EF for ; Sun, 7 Nov 2021 20:29:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D04C061159 for ; Sun, 7 Nov 2021 20:29:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235622AbhKGUcb (ORCPT ); Sun, 7 Nov 2021 15:32:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55504 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234694AbhKGUca (ORCPT ); Sun, 7 Nov 2021 15:32:30 -0500 Received: from mail-lj1-x234.google.com (mail-lj1-x234.google.com [IPv6:2a00:1450:4864:20::234]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD0B0C061570 for ; Sun, 7 Nov 2021 12:29:46 -0800 (PST) Received: by mail-lj1-x234.google.com with SMTP id e11so6237621ljo.13 for ; Sun, 07 Nov 2021 12:29:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=jGY7RfOaQrR143tFTXp9AmdaelagLkghITmdcAU5ck8=; b=W4SKTjFA/TwvdtydJ3O3SLGlMUvD3lJKRcCtlae+ZoWNf3xoQjJ2Q4l8YD741gn2TX 2CPO9+YqCVeFaZpY8swk55G2XMtzaWwZGB1RVvF3/73DQOSp4BHB0F/KN6W7d+kgA10+ GdxqOJWAEw8FHovVwTFY55UexKesLc72omZ3J/EwbtfFILCDV1OIJne/Cd+Y+HFLTLLX KXbnOJ02/Lr0DlGkk/WAkL9fuYu4fb+UguBhy5eIwesuWNcE/adt/0hvUwy7l/Z3tX36 jsyrI87Mm8G/zj/WPxNeLfOk2Hur8wFcMPzXocB1A9wyH9ryhR2jnqHmm0ybwW8e9eOj gssQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=jGY7RfOaQrR143tFTXp9AmdaelagLkghITmdcAU5ck8=; b=zRiYtZYtMDJkJWyy9QdouUYTr7gOJFZwe5umKa3TVqvkmt9dJG4cZGaY71J58s4Hap 0LdR76smb8zcmaVpa0FEhU9YgMrUOc5MI237wFf406zKJx8lSGmEGb74nSpz1+Zt6MlH ECALhUTMzJz9Yj0Ox9Yrn8GIt3EEsuSpCmKF8O9LYnUwGQrG3NEMpHBBIccoRnTLbddW nl+H88HCaNseHhlbDw67Hp1hq4uqR0MwZJKSYlPhqbKtqWpEC7UgrLw5p2ILqbtWinMZ 9m+iykphz4M5b/bRrXZvTbQgK0ZojmjliXTxs7+TBKZZJLSc0OkbPSKwC+Z4NOJvUUOW 9VQQ== X-Gm-Message-State: AOAM530S6E6RnzXlEwtJLDe+e7c0MuhcYltkZrfvY/oJLTpwLBTA3XFq IxOjM4MKQZ2LOCNCjAtSueUFMg== X-Google-Smtp-Source: ABdhPJwrjrSG/hCZUVzVADJdX6jnHk5AqH06vyV+y+aUeCYlO/afKuy3y5L6/Q1l5o0DZSSHdlTX/Q== X-Received: by 2002:a2e:3902:: with SMTP id g2mr77151116lja.321.1636316985146; Sun, 07 Nov 2021 12:29:45 -0800 (PST) Received: from localhost ([31.134.121.151]) by smtp.gmail.com with ESMTPSA id e29sm4437lfb.111.2021.11.07.12.29.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Nov 2021 12:29:44 -0800 (PST) From: Sam Protsenko To: Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski Cc: linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH v3 00/12] watchdog: s3c2410: Add Exynos850 support Date: Sun, 7 Nov 2021 22:29:31 +0200 Message-Id: <20211107202943.8859-1-semen.protsenko@linaro.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org Exynos850 WDT IP-core differs a bit from existing platforms: - Another set of PMU registers - Separate WDT instance for each CPU cluster, having different PMU registers/bits - Source clock is different from PCLK Implement all missing features above and enable Exynos850 WDT support. While at it, do a bit of cleaning up. Changes in v3: - Renamed "samsung,index" property to more descriptive "samsung,cluster-index" - bindings: Disabled "samsung,cluster-index" property for SoCs other than Exynos850 - Added quirks documentation - Removed has_src_clk field: clk framework can handle NULL clk; added s3c2410wdt_get_freq() function instead, to figure out which clock to use for getting the rate - Used pre-defined and completely set driver data for cluster0 and cluster1 - Coding style changes - Added R-b tags Changes in v2: - Added patch to fail probe if no valid timeout was found, as suggested by Guenter Roeck (03/12) - Extracted code for separating disable/mask functions into separate patch (06/12) - Added patch for inverting mask register value (07/12) - Extracted PMU cleanup code to separate patch, to ease the review and porting (09/12) - Added patch for removing not needed 'err' label in probe function (11/12) - Addressed all outstanding review comments on mailing list Sam Protsenko (12): dt-bindings: watchdog: Require samsung,syscon-phandle for Exynos7 dt-bindings: watchdog: Document Exynos850 watchdog bindings watchdog: s3c2410: Fail probe if can't find valid timeout watchdog: s3c2410: Let kernel kick watchdog watchdog: s3c2410: Make reset disable register optional watchdog: s3c2410: Extract disable and mask code into separate functions watchdog: s3c2410: Implement a way to invert mask reg value watchdog: s3c2410: Add support for WDT counter enable register watchdog: s3c2410: Cleanup PMU related code watchdog: s3c2410: Support separate source clock watchdog: s3c2410: Remove superfluous err label watchdog: s3c2410: Add Exynos850 support .../bindings/watchdog/samsung-wdt.yaml | 48 ++- drivers/watchdog/s3c2410_wdt.c | 322 +++++++++++++----- 2 files changed, 287 insertions(+), 83 deletions(-)