From patchwork Fri Aug 12 22:25:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 1666015 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=bV9JUvVE; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4M4JD20Tr2z9sGP for ; Sat, 13 Aug 2022 08:25:54 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237248AbiHLWZv (ORCPT ); Fri, 12 Aug 2022 18:25:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39444 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237439AbiHLWZk (ORCPT ); Fri, 12 Aug 2022 18:25:40 -0400 Received: from mail-qk1-x72b.google.com (mail-qk1-x72b.google.com [IPv6:2607:f8b0:4864:20::72b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2139712D0B; Fri, 12 Aug 2022 15:25:38 -0700 (PDT) Received: by mail-qk1-x72b.google.com with SMTP id u24so1837140qku.2; Fri, 12 Aug 2022 15:25:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc; bh=22h/M/V860IplmghhOOIgt/faKZklILiFH5PQHaZGuQ=; b=bV9JUvVE2HdIowfvyhODwSprmEzqvEvIWJkWCX8mGzO6O6Mb1X9tyyTDSJkEV3J9kv kcqGPhbxTK5TKWHzG6ebBjnWGzzLcWZncl3zl3ODqWLTsFDspWHUzX06bIROnZ8g2lDS gDlBDvInrqAmpk6V+6S9n9WXvQeahiUbo+RB6ZxCY5WgaRydlEb/+VqaYbiHMb2IZB/1 4tFvrZAA2ikeutY2/agaLhtNF3zHs+ah7eKPInVxsGcw6zPVj3Oeksz0icXkV3vGhktC cQ83UZrwaYGnilwnF4VaJhvGeRxBKN/8FnY5XPQnmMqGw+OzdV8Xgl1xLxsMlX3LCcgZ /jXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc; bh=22h/M/V860IplmghhOOIgt/faKZklILiFH5PQHaZGuQ=; b=GZQ7Q1phPgLaMkawfdH+m99Z/wEkUYTtCbaUFYdPCbB8alJxz320bLwS+2gKOe24M7 q5pzaLGzGrWyU+9dvb0grebTfShtmJadt7H7/926vd9dnuXOV6aCQ9At+Y8jejzK/mWl 6hIgXPQ5e8uKkCyfc9jbZqYh+jZcdDIGD5tu81JxQcFfSpzakxgD+NVkR75PVhG19Xpr RncgleF+rZ7n7eUfStEOybkedZP3lbO/FZ/ol55PL0Z6N6Pcnl0M1JUeRixKaYOYwJzu GAqyBCSTpL9uTNSSYypPExj6mZJwaIE4ZAGznYaRLfFuNluDvdkk1FvPTxDRIgZEnATU MH2Q== X-Gm-Message-State: ACgBeo3rIvEDLad7yg1CsAp5kPt7egfqgTt0EB2n3N78XYlWRj1VRYhp dzKE8zMUC2Rw9JD/Y+HNYeJkDbgBzlw= X-Google-Smtp-Source: AA6agR4sfKig+81R21IHRCKMPg1+J43EyxVKJ0AjLE7V76UMtM0QABWO3kvjmalmekrTXtUjv3gzOQ== X-Received: by 2002:a37:88c3:0:b0:6b9:53c7:75e4 with SMTP id k186-20020a3788c3000000b006b953c775e4mr4299661qkd.532.1660343136819; Fri, 12 Aug 2022 15:25:36 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id f17-20020a05620a409100b006b942ae928bsm2788878qko.71.2022.08.12.15.25.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Aug 2022 15:25:36 -0700 (PDT) From: Florian Fainelli To: linux-kernel@vger.kernel.org Cc: Florian Fainelli , Broadcom internal kernel review list , Rob Herring , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM7XXX ARM ARCHITECTURE), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Subject: [PATCH v5 0/3] Add Broadcom STB memory controller driver Date: Fri, 12 Aug 2022 15:25:30 -0700 Message-Id: <20220812222533.2428033-1-f.fainelli@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Krzysztof, This small patch series adds basic support for controlling self-refresh power down on Broadcom STB memory controllers. We might be able to contribute more features to the memory controller driver in the future like accurate reporting of the memory type, timings, and possibly some performance counters. Changes in v5: - use DEFINE_SIMPLE_PM_OPS() to avoid keeping the __maybe_unused Changes in v4: - drop unnecessary owner assignment for the platform_driver - use pm_ptr() as directed Changes in v3: - made 'frequency' property optional to avoid introducing warnings for existing BMIPS and BCM7445 DTS files - updated sysfs document to use a shorter and universal path Changes in v2: - merged the v1 first two patches - added a sysfs document describing attributes exposed - addressed feedback from Krzysztof regarding style and API usage Florian Fainelli (3): dt-bindings: memory-controller: Document Broadcom STB MEMC Documentation: sysfs: Document Broadcom STB memc sysfs knobs memory: Add Broadcom STB memory controller driver .../ABI/testing/sysfs-platform-brcmstb-memc | 15 + .../bindings/arm/bcm/brcm,brcmstb.txt | 11 +- .../brcm,brcmstb-memc-ddr.yaml | 52 +++ drivers/memory/Kconfig | 9 + drivers/memory/Makefile | 1 + drivers/memory/brcmstb_memc.c | 301 ++++++++++++++++++ 6 files changed, 380 insertions(+), 9 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-platform-brcmstb-memc create mode 100644 Documentation/devicetree/bindings/memory-controllers/brcm,brcmstb-memc-ddr.yaml create mode 100644 drivers/memory/brcmstb_memc.c