From patchwork Fri Aug 12 17:31:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 1665956 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=B0rNvBv6; 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 4M49jV2DJ8z9sG6 for ; Sat, 13 Aug 2022 03:32:30 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234618AbiHLRb5 (ORCPT ); Fri, 12 Aug 2022 13:31:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239404AbiHLRbd (ORCPT ); Fri, 12 Aug 2022 13:31:33 -0400 Received: from mail-qt1-x82e.google.com (mail-qt1-x82e.google.com [IPv6:2607:f8b0:4864:20::82e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 157C9A6C09; Fri, 12 Aug 2022 10:31:33 -0700 (PDT) Received: by mail-qt1-x82e.google.com with SMTP id h4so1261400qtj.11; Fri, 12 Aug 2022 10:31:32 -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=oaUCbnaOaO/kjQKPb1GH5mFqVp7+u4EfhIP4oZeH2rc=; b=B0rNvBv6hqNrcuknu/vCYkIKosD0gYESAPCt88QuIfjZA+18svJX19VTMvOoxsW73U NROpiFTH+uCXZyFCY8gDvz0w9oBvsaSrSeSdfFQhmdfI6j0F8UqLn2ebqFE0HPyq2+Up dl3KD6xf3AYcecK1U6lBv5zzNAdToOTbdLGDnquE4rakysKmQbUzWUuYBpyYs7hHrVJy UEX+dcX2VcZd4DEqv6Kx6uC7axX4n1U61gnqNl6l2ekP6E/rYowW3fX+JIfxGYd2a+kO bfLdzS1nofFHUXJMQ4V0Cf+yspmM5FwHRvpNg2Er+kkkpzkj0Ekj3Kv2lMH8Nb+Z0W0h BK+g== 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=oaUCbnaOaO/kjQKPb1GH5mFqVp7+u4EfhIP4oZeH2rc=; b=bLyEtC5FiicyvWjnF6Y07+ZmldjEf6LJtZ0DByp7S0zOQD0vvWGScHFHjHpLF7fvVU /olMuRy3qCJNDF3pcDgwDjA4sVGm4QU9nZEKcHSsum/r2KIy5DycHZSrGvYQ23zpV3Rf lbMm2qQ3P5qfmboDWGymQiCElmoDrB22wfNPQ5mtKs70x0CBaUeSIlu83k4dHlz1klgE ZimppbS4b5THmO1xM0Q0/oTOGUNmHgoVulr6n2O4yQVOhH0AWwHeA5R6pbgAkRG56vxf CsJ2nFGfP3hgcImW1jLkvAZpFeqHQQVV5KoDavJsMRMsPMZ6WcLlIHFt2eJm6338OXhy 0HoA== X-Gm-Message-State: ACgBeo1r3+x0r+Td0iST71DL8KRD4dY4VWwfAy2IZtaCqsjBbCC82smz Ev0hrzVghcQxDdxOVBS4nao0e3afaj0= X-Google-Smtp-Source: AA6agR7a7RItEv6RiqJofk5V9VwUYBiQCFeU6ZbqJ9yF7/cvZy1OCN6eGtx51fFO07l7SpWaP4c3iA== X-Received: by 2002:ac8:7fd5:0:b0:31e:f229:2bad with SMTP id b21-20020ac87fd5000000b0031ef2292badmr4451404qtk.528.1660325491703; Fri, 12 Aug 2022 10:31:31 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id t201-20020a37aad2000000b006b9b7879964sm2369300qke.28.2022.08.12.10.31.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Aug 2022 10:31:31 -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 v4 0/3] Add Broadcom STB memory controller driver Date: Fri, 12 Aug 2022 10:31:22 -0700 Message-Id: <20220812173125.2410536-1-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 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