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=-9.8 required=3.0 tests=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 BD29CC76192 for ; Thu, 18 Jul 2019 03:25:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 960BB2053B for ; Thu, 18 Jul 2019 03:25:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563420358; bh=26eAjIac7+2nGolq1DK+LxeeY4nVbF8uw7n8iF6+A6g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Yq+l9gIU6QzLlVDhvkiJm9LJFwlIqvsVA9mdO9iLRdL5NW+H3bN1YVLvPbADKwLgy ewfCDamnajQnn9FmGMVnWdeeJ8MOCc7cXyPgAGjllKKnyMB4m4ryJ5Ehogobalc6qS LDd7nc4+Yk8GMr0le6WubIIgKJ8lPMQnIJeQpYvI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389756AbfGRDEk (ORCPT ); Wed, 17 Jul 2019 23:04:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:35592 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727541AbfGRDEk (ORCPT ); Wed, 17 Jul 2019 23:04:40 -0400 Received: from localhost (115.42.148.210.bf.2iij.net [210.148.42.115]) (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 ABA342173B; Thu, 18 Jul 2019 03:04:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563419079; bh=26eAjIac7+2nGolq1DK+LxeeY4nVbF8uw7n8iF6+A6g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IO/k+MM0JVpIJbWA5lxjs/NRexzkjuXWWObsKBml59a6NK/jxdzuvwe5AWBClgSpJ f6cnM0I9k4PbqtOWuupGH0rGMIvZHEbJS/pvVTXBWi86mwd2qjPQGHiWNqx0c6ae9X XRTAVXJL9tUycWHjrHCIQsA+DugI59xKRY9TfnJ0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Martin Blumenstingl , Kevin Hilman , Sasha Levin Subject: [PATCH 5.1 08/54] ARM: dts: meson8b: fix the operating voltage of the Mali GPU Date: Thu, 18 Jul 2019 12:01:03 +0900 Message-Id: <20190718030053.997389489@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190718030053.287374640@linuxfoundation.org> References: <20190718030053.287374640@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 26d65140e92a626e39c73c9abf769fd174bf5076 ] Amlogic's vendor kernel defines an OPP for the GPU on Meson8b boards with a voltage of 1.15V. It turns out that the vendor kernel relies on the bootloader to set up the voltage. The bootloader however sets a fixed voltage of 1.10V. Amlogic's patched u-boot sources (uboot-2015-01-15-23a3562521) confirm this: $ grep -oiE "VDD(EE|AO)_VOLTAGE[ ]+[0-9]+" board/amlogic/configs/m8b_* board/amlogic/configs/m8b_m100_v1.h:VDDAO_VOLTAGE 1100 board/amlogic/configs/m8b_m101_v1.h:VDDAO_VOLTAGE 1100 board/amlogic/configs/m8b_m102_v1.h:VDDAO_VOLTAGE 1100 board/amlogic/configs/m8b_m200_v1.h:VDDAO_VOLTAGE 1100 board/amlogic/configs/m8b_m201_v1.h:VDDEE_VOLTAGE 1100 board/amlogic/configs/m8b_m201_v1.h:VDDEE_VOLTAGE 1100 board/amlogic/configs/m8b_m202_v1.h:VDDEE_VOLTAGE 1100 Another hint at this is the VDDEE voltage on the EC-100 and Odroid-C1 boards. The VDDEE regulator supplies the Mali GPU. It's basically a copy of the VCCK (CPU supply) which means it's limited to 0.86V to 1.14V. Update the operating voltage of the Mali GPU on Meson8b to 1.10V so it matches with what the vendor u-boot sets. Fixes: c3ea80b6138cae ("ARM: dts: meson8b: add the Mali-450 MP2 GPU") Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman Signed-off-by: Sasha Levin --- arch/arm/boot/dts/meson8b.dtsi | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi index fe84a8c3ce81..6b80aff32fc2 100644 --- a/arch/arm/boot/dts/meson8b.dtsi +++ b/arch/arm/boot/dts/meson8b.dtsi @@ -163,23 +163,23 @@ opp-255000000 { opp-hz = /bits/ 64 <255000000>; - opp-microvolt = <1150000>; + opp-microvolt = <1100000>; }; opp-364300000 { opp-hz = /bits/ 64 <364300000>; - opp-microvolt = <1150000>; + opp-microvolt = <1100000>; }; opp-425000000 { opp-hz = /bits/ 64 <425000000>; - opp-microvolt = <1150000>; + opp-microvolt = <1100000>; }; opp-510000000 { opp-hz = /bits/ 64 <510000000>; - opp-microvolt = <1150000>; + opp-microvolt = <1100000>; }; opp-637500000 { opp-hz = /bits/ 64 <637500000>; - opp-microvolt = <1150000>; + opp-microvolt = <1100000>; turbo-mode; }; }; -- 2.20.1