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=-12.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 AC210C31E40 for ; Mon, 12 Aug 2019 13:10:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8271D20684 for ; Mon, 12 Aug 2019 13:10:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565615423; bh=98grsJx1sM3LUjBPOk0n8l8cw5rCYXScn2G+MRXZcPA=; h=From:To:Cc:Subject:In-Reply-To:Date:List-ID:From; b=m04o/zzp0V9ZKwZB6uFRZ7qPaKG1VK2PmEI0fsXjzxKxGHNLt19l7BSii2h0bAGx3 hWQ/Gou/S2DPLTSCnjorRNcUyhHlId4XG3p8/Fxnw5vWBlvalDFVwVgc+cT4cY+zMZ b1iIARgNoBeXZ48tHLmx4K/YnMXQuxb38K+m4we0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728905AbfHLNKW (ORCPT ); Mon, 12 Aug 2019 09:10:22 -0400 Received: from heliosphere.sirena.org.uk ([172.104.155.198]:40782 "EHLO heliosphere.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728861AbfHLNKQ (ORCPT ); Mon, 12 Aug 2019 09:10:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sirena.org.uk; s=20170815-heliosphere; h=Date:Message-Id:In-Reply-To: Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:References: List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner: List-Archive; bh=abqDwA1+NPvPfsymvfg9Fw4bxsOpFClMApymY/K0pG8=; b=IMbKDpz9B+Um VPrxqxZNvtzJUDMsMN8PJ+ex2S0COqBaXphq2Njipkm+u2/TZpZCH7+eDDjJKlIkyfuiKJL0gkwMN 7tRxDvLVsO/ZvURrleKY3hQsSuJWuup5cvnnlA7h/tAp33QmlNi1MnEmDCOadzTjoDllsvQvFGVKs 5R0WY=; Received: from ypsilon.sirena.org.uk ([2001:470:1f1d:6b5::7]) by heliosphere.sirena.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1hxA5T-0001R0-Bv; Mon, 12 Aug 2019 13:10:11 +0000 Received: by ypsilon.sirena.org.uk (Postfix, from userid 1000) id 7FA002740CED; Mon, 12 Aug 2019 14:10:09 +0100 (BST) From: Mark Brown To: Gregory CLEMENT Cc: devicetree@vger.kernel.org, Liam Girdwood , linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, Mark Brown , Rob Herring , Thomas Petazzoni , Tony Lindgren Subject: Applied "dt-bindings: regulator: twl6030: Add retain-on-reset property" to the regulator tree In-Reply-To: <20190725094542.16547-2-gregory.clement@bootlin.com> X-Patchwork-Hint: ignore Message-Id: <20190812131009.7FA002740CED@ypsilon.sirena.org.uk> Date: Mon, 12 Aug 2019 14:10:09 +0100 (BST) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The patch dt-bindings: regulator: twl6030: Add retain-on-reset property has been applied to the regulator tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-5.4 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 906c4d5c939b4d8ebe7be357121271df7b8c9582 Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Thu, 25 Jul 2019 11:45:40 +0200 Subject: [PATCH] dt-bindings: regulator: twl6030: Add retain-on-reset property During reset the VMMC regulator doesn't reach 0V and only drops to 1.8V, furthermore the pulse width is under 200us whereas the SD specification expect 1ms. For this 2 reasons being able to no reset at all the VMMC during warm reset and keep the current voltage is a good workaround. The TWL6030 allows this but needs to be aware of it and this configuration should also be shared with the bootloader. This is the purpose of this new property: ti,retain-on-reset Signed-off-by: Gregory CLEMENT Link: https://lore.kernel.org/r/20190725094542.16547-2-gregory.clement@bootlin.com Signed-off-by: Mark Brown --- .../devicetree/bindings/regulator/twl-regulator.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/twl-regulator.txt b/Documentation/devicetree/bindings/regulator/twl-regulator.txt index 74a91c4f8530..549f80436deb 100644 --- a/Documentation/devicetree/bindings/regulator/twl-regulator.txt +++ b/Documentation/devicetree/bindings/regulator/twl-regulator.txt @@ -71,3 +71,10 @@ Example: regulator-min-microvolt = <1000000>; regulator-max-microvolt = <3000000>; }; + +For twl6030 regulators/LDOs: + + - ti,retain-on-reset: Does not turn off the supplies during warm + reset. Could be needed for VMMC, as TWL6030 + reset sequence for this signal does not comply + with the SD specification. -- 2.20.1