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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 6D7E1C4363F for ; Mon, 10 May 2021 12:16:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5218361430 for ; Mon, 10 May 2021 12:16:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344555AbhEJMPw (ORCPT ); Mon, 10 May 2021 08:15:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:45768 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236423AbhEJLIG (ORCPT ); Mon, 10 May 2021 07:08:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id A39FC61992; Mon, 10 May 2021 11:01:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620644469; bh=HH76M35kDKlyVQQ07uDGSiDSpAq86qUC+3p4qvtpPAw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hc3B6qHq+7MEM7UaarAC9+OVF+8rO3bTIl7UnxmKgHjp4xsMqEfpUist4IXXNJO+D 12XZJEu0Rzq1n4bDbL5ZT+e5NlUVQEhtFuQggsleiekWW9+K5+dpQ4R0k0JZv/uhhS hXW1NwQ8+PgwZvp37/Vg2XlM09KmwMB4D16RwZPw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sebastian Krzyszkowiak , Martin Kepplinger , Shawn Guo , Sasha Levin Subject: [PATCH 5.12 095/384] arm64: dts: imx8mq-librem5-r3: Mark buck3 as always on Date: Mon, 10 May 2021 12:18:04 +0200 Message-Id: <20210510102018.022690911@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210510102014.849075526@linuxfoundation.org> References: <20210510102014.849075526@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sebastian Krzyszkowiak [ Upstream commit a362b0cc94d476b097ba0ff466958c1d4e27e219 ] Commit 99e71c029213 ("arm64: dts: imx8mq-librem5: Don't mark buck3 as always on") removed always-on marking from GPU regulator, which is great for power saving - however it introduces additional i2c0 traffic which can be deadly for devices from the Dogwood batch. To workaround the i2c0 shutdown issue on Dogwood, this commit marks buck3 as always-on again - but only for Dogwood (r3). Signed-off-by: Sebastian Krzyszkowiak Signed-off-by: Martin Kepplinger Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts index 0d38327043f8..cd3c3edd48fa 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts @@ -28,6 +28,10 @@ ti,termination-current = <144000>; /* uA */ }; +&buck3_reg { + regulator-always-on; +}; + &proximity { proximity-near-level = <25>; }; -- 2.30.2