From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH 1/2] memory: ti-emif-sram: Add ti_emif_run_hw_leveling for DDR3 hardware leveling Date: Tue, 9 Apr 2019 08:19:05 -0700 Message-ID: <20190409151905.GJ2839@atomide.com> References: <20190402165743.28106-1-d-gerlach@ti.com> <20190402165743.28106-2-d-gerlach@ti.com> <20190402172401.GO49658@atomide.com> <60a33620-0f27-37d8-5d29-dc83ab410274@ti.com> <20190408193400.GO49658@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20190408193400.GO49658@atomide.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Dave Gerlach Cc: Keerthy J , linux-omap@vger.kernel.org, Brad Griffis , linux-arm-kernel@lists.infradead.org, Santosh Shilimkar List-Id: linux-omap@vger.kernel.org * Tony Lindgren [190408 19:34]: > * Dave Gerlach [190408 18:31]: > > Tony, > > On 4/2/19 12:24 PM, Tony Lindgren wrote: > > > * Dave Gerlach [190402 16:57]: > > > > In certain situations, such as when returning from low power modes, the > > > > EMIF must re-run hardware leveling to properly restore DDR3 access. > > > > > > > > This is accomplished by introducing a new ti-emif-sram-pm call, > > > > ti_emif_run_hw_leveling, to check if DDR3 is in use and if so, trigger > > > > the full write and read leveling processes. > > > > > > OK nice that you also consider devices with LPDDR2 then in case we > > > start seeing those. > > > > Yes, LPDDR2 will work fine with these. Any thoughts on if this series should > > come through you or Santosh? > > Probably best that I queue these since there's also > arch/arm/mach-omap2 code related changes. Santosh, is this OK with you? Care to ack the patch? Regards, Tony 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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 1A8C8C10F0E for ; Tue, 9 Apr 2019 15:19:23 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DB6D42084F for ; Tue, 9 Apr 2019 15:19:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ZBdy6shE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DB6D42084F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=atomide.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=FCmF7OTbgw9pz2cG+6I7htGlIMwC1eYzD4336nTcCCw=; b=ZBdy6shE0OxRfd 30PXqHcpyPbAA8Kt+rZdrsowMAQ4J1YiFiJx56PG1Y2CUTEg/DwtyJBx92XK/BrAI8aHZppSqyRgF jLQmT+dP1fiYg4B7sRjzz1FSDN4onjHNJlJ0yJ0oF4UOodoIoeZR0DKzfJA2iLb4QWmedHv8WtB2i 1rtXrrl4nFs+w0I+kyd3bO0IOo759OiatSQnlFeTtg/Ee1g6mp4Z1CwVyGgr6FymJfxJ4PtXzbznY j+GPCpQIr5SOk+ILBFBDFF7/Mn9hWf3NWEnsIj7NYX8MITtDigsQab/vNlVdl5cihT3afPzovPvH7 p1374hduj6zBqoPFEb5g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hDsWn-0006Qk-Bd; Tue, 09 Apr 2019 15:19:13 +0000 Received: from muru.com ([72.249.23.125]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hDsWk-0006Ix-U1 for linux-arm-kernel@lists.infradead.org; Tue, 09 Apr 2019 15:19:12 +0000 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id C992A8027; Tue, 9 Apr 2019 15:19:23 +0000 (UTC) Date: Tue, 9 Apr 2019 08:19:05 -0700 From: Tony Lindgren To: Dave Gerlach Subject: Re: [PATCH 1/2] memory: ti-emif-sram: Add ti_emif_run_hw_leveling for DDR3 hardware leveling Message-ID: <20190409151905.GJ2839@atomide.com> References: <20190402165743.28106-1-d-gerlach@ti.com> <20190402165743.28106-2-d-gerlach@ti.com> <20190402172401.GO49658@atomide.com> <60a33620-0f27-37d8-5d29-dc83ab410274@ti.com> <20190408193400.GO49658@atomide.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190408193400.GO49658@atomide.com> User-Agent: Mutt/1.11.4 (2019-03-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190409_081911_008492_A8A1FFA0 X-CRM114-Status: GOOD ( 10.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Keerthy J , linux-omap@vger.kernel.org, Brad Griffis , linux-arm-kernel@lists.infradead.org, Santosh Shilimkar Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org * Tony Lindgren [190408 19:34]: > * Dave Gerlach [190408 18:31]: > > Tony, > > On 4/2/19 12:24 PM, Tony Lindgren wrote: > > > * Dave Gerlach [190402 16:57]: > > > > In certain situations, such as when returning from low power modes, the > > > > EMIF must re-run hardware leveling to properly restore DDR3 access. > > > > > > > > This is accomplished by introducing a new ti-emif-sram-pm call, > > > > ti_emif_run_hw_leveling, to check if DDR3 is in use and if so, trigger > > > > the full write and read leveling processes. > > > > > > OK nice that you also consider devices with LPDDR2 then in case we > > > start seeing those. > > > > Yes, LPDDR2 will work fine with these. Any thoughts on if this series should > > come through you or Santosh? > > Probably best that I queue these since there's also > arch/arm/mach-omap2 code related changes. Santosh, is this OK with you? Care to ack the patch? Regards, Tony _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel