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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 3C768C49ED7 for ; Mon, 16 Sep 2019 16:26:11 +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 0FF2E214AF for ; Mon, 16 Sep 2019 16:26:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="HCXKRjQm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0FF2E214AF 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=tLxTkfVCWesH2A8b1y4vD8LU/wsD9cEAF0IkelUS4ig=; b=HCXKRjQmXkkrwE B7krUm/mEkI6SqlvHhktjHb0P6xiC8+L2/0HwOeAD5iq39CKEUj13A3K4eI/Cc6zYG0QCF6aumN7+ iUbTlH9gRBIVH2x/76xorW/fX9g+p4OAEqTDTmx4ah6lRO0eoQ4XTFU+DdPkV18T31JcFiiKr530z V5hIDZ0QGNHqpa9Pllys19aKX1nTHArhAStgVMQJtN19IuFWzNqRIcu4QxJzCEGJd/V1ERagU7vY3 JJ/2Nj/OmOPTMfBW6R8EJHa6gJJ1MSRqUoh4CdWogKEncUm5KQgeQBw4KJ88UZPZPl5txKJJA8FJG Ivbp3k7rtwXqqV3X9/KQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1i9tpF-0001R6-VZ; Mon, 16 Sep 2019 16:26:06 +0000 Received: from muru.com ([72.249.23.125]) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1i9tp8-0001QC-M5 for linux-arm-kernel@lists.infradead.org; Mon, 16 Sep 2019 16:26:04 +0000 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 1BC2B80EA; Mon, 16 Sep 2019 16:26:28 +0000 (UTC) Date: Mon, 16 Sep 2019 09:25:53 -0700 From: Tony Lindgren To: "H. Nikolaus Schaller" Subject: Re: [PATCH v3 6/8] ARM: dts: omap36xx: using OPP1G needs to control the abb_ldo Message-ID: <20190916162553.GC52127@atomide.com> References: <59a0f6267c75859c25665548db2e8a9c4229d3b4.1568224033.git.hns@goldelico.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <59a0f6267c75859c25665548db2e8a9c4229d3b4.1568224033.git.hns@goldelico.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-20190916_092558_759038_8101B03D X-CRM114-Status: GOOD ( 10.78 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, letux-kernel@openphoenux.org, linux-pm@vger.kernel.org, Enric Balletbo i Serra , Viresh Kumar , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, Rob Herring , =?utf-8?B?QW5kcsOp?= Roth , =?utf-8?Q?Beno=C3=AEt?= Cousson , kernel@pyra-handheld.com, Teresa Remmet , Javier Martinez Canillas , linux-omap@vger.kernel.org, Adam Ford , linux-arm-kernel@lists.infradead.org, Roger Quadros 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 * H. Nikolaus Schaller [190911 17:48]: > See DM3730,DM275 data sheet (SPRS685B) footnote (6) in Table 4-19 > which says that ABB must be switched to FBB mode when using the > OPP1G. > > The LOD definition abb_mpu_iva already exists so that we need > to add plumbing for vbb-supply = <&abb_mpu_iva> > and define two voltage vectors for each OPP so that the abb LDO > is also updated by the ti-cpufreq driver. > > We also must switch the ti_cpufreq_soc_data to multi_regulator. > > Note: reading out the abb reglator voltage to verify that > it does do transitions can be done by > > cat /sys/devices/platform/68000000.ocp/483072f0.regulator-abb-mpu/regulator/regulator.*/microvolts > > Likewise, read the twl4030 provided VDD voltage by > > cat /sys/devices/platform/68000000.ocp/48070000.i2c/i2c-0/0-0048/48070000.i2c:twl@48:regulator-vdd1/regulator/regulator.*/microvolts > > Note: to check if the ABB FBB is enabled/disabled, check > registers > > PRM_LDO_ABB_CTRL 0x483072F4 bit 3:0 1=bypass 5=FBB > PRM_LDO_ABB_SETUP 0x483072F0 0x00=bypass 0x11=FBB > > e.g. > > /dev/mem opened. > Memory mapped at address 0xb6fe4000. > Value at address 0x483072F4 (0xb6fe42f4): 0x3205 > /dev/mem opened. > Memory mapped at address 0xb6f89000. > Value at address 0x483072F4 (0xb6f892f4): 0x3201 > > Note: omap34xx and am3517 have/need no comparable LDO > or mechanism. Acked-by: Tony Lindgren _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel