From patchwork Mon Aug 17 15:11:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 266061 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 3E777C433DF for ; Mon, 17 Aug 2020 19:09:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1A3DF20738 for ; Mon, 17 Aug 2020 19:09:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597691390; bh=r9cARwlmRmQB2cn/JMr7t+CaD0wcuI04mAkfiugb6E4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=0LjSiLIsYDwzUtKWKb+0QJRP6R6xHqxLjv1RRJdyoE4pj0oryLFVCQpV8FeqfShjr elmpV4l2iWV9rXpXqcVkyoWuu1mEL/e4PkS4I9DSThWSBTc+U3O+0yYTnH6Pr5K5uY bAR2DlENO57wdffJDnYiBtb2kJnXWnlZtVCI4kdA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387509AbgHQPmP (ORCPT ); Mon, 17 Aug 2020 11:42:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:52172 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387503AbgHQPmO (ORCPT ); Mon, 17 Aug 2020 11:42:14 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 03CA920760; Mon, 17 Aug 2020 15:42:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597678933; bh=r9cARwlmRmQB2cn/JMr7t+CaD0wcuI04mAkfiugb6E4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UlrNQFiqVa+DQoMwyQZh1KUzFi6YeOg7Tu1A62aSJYiJPhcxFLr8db1z/JwX2t7+o dtlxmfzQpvH5zO8vkU6THhDmj2LuSTdjzOeN5aom+D95CcLQRjcnOmXPdpE4xqh8nm Czi0JY6yeYeiX9VgeQjwLeWnTqrK3+s2I684vxS8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chen-Yu Tsai , Maxime Ripard , Sasha Levin Subject: [PATCH 5.7 040/393] ARM: dts: sunxi: bananapi-m2-plus-v1.2: Fix CPU supply voltages Date: Mon, 17 Aug 2020 17:11:30 +0200 Message-Id: <20200817143821.544251963@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143819.579311991@linuxfoundation.org> References: <20200817143819.579311991@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Chen-Yu Tsai [ Upstream commit e4dae01bf08b754de79072441c357737220b873f ] The Bananapi M2+ uses a GPIO line to change the effective resistance of the CPU supply regulator's feedback resistor network. The voltages described in the device tree were given directly by the vendor. This turns out to be slightly off compared to the real values. The updated voltages are based on calculations of the feedback resistor network, and verified down to three decimal places with a multi-meter. Fixes: 6eeb4180d4b9 ("ARM: dts: sunxi: h3-h5: Add Bananapi M2+ v1.2 device trees") Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20200717160053.31191-4-wens@kernel.org Signed-off-by: Sasha Levin --- arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi b/arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi index a628b5ee72b65..235994a4a2ebb 100644 --- a/arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi +++ b/arch/arm/boot/dts/sunxi-bananapi-m2-plus-v1.2.dtsi @@ -16,12 +16,12 @@ reg_vdd_cpux: vdd-cpux { regulator-type = "voltage"; regulator-boot-on; regulator-always-on; - regulator-min-microvolt = <1100000>; - regulator-max-microvolt = <1300000>; + regulator-min-microvolt = <1108475>; + regulator-max-microvolt = <1308475>; regulator-ramp-delay = <50>; /* 4ms */ gpios = <&r_pio 0 1 GPIO_ACTIVE_HIGH>; /* PL1 */ gpios-states = <0x1>; - states = <1100000 0>, <1300000 1>; + states = <1108475 0>, <1308475 1>; }; };