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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 BFF78C5B57D for ; Wed, 3 Jul 2019 02:15:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9529121897 for ; Wed, 3 Jul 2019 02:15:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562120120; bh=yfKz8Pgy3xUbbCrtwVExGp4uzeldW4cOAyhyQTJFsFE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=U/F4o/xTm+QAI8r+7TwEQhdaiEujYGZfJww7rjQcS0dZLVe1vowgKq9tSXwFH2gqx bxmr+mhChnFFjqsEyr0nUD+zn7NeCsi0BcnJZlWxsXY5XR2WMhKoqvmq49IRLWlpQx LiBKjga0cO2cNdUxzT7b6rI7GNwkToPiOB/3Dip4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727525AbfGCCPT (ORCPT ); Tue, 2 Jul 2019 22:15:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:53608 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727474AbfGCCPS (ORCPT ); Tue, 2 Jul 2019 22:15:18 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 86B8621873; Wed, 3 Jul 2019 02:15:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562120117; bh=yfKz8Pgy3xUbbCrtwVExGp4uzeldW4cOAyhyQTJFsFE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Cszx2o5nZL5X9URylEmFnv42BogCzeB9ZcZniss5l647gs0Ewlw/OSOWCfVKrLAp7 6NlxwublEB8Ua3sHyiXsibz9BlL+fu/Quh1/Wn1oxwzIXTVanCp4cCyDSXq3QeY5LX AeUnU+vIVQbZiw3vPQz+wzUpZ7t+UO/YXk+fyNJo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Martin Blumenstingl , Kevin Hilman , Sasha Levin , devicetree@vger.kernel.org, linux-amlogic@lists.infradead.org Subject: [PATCH AUTOSEL 5.1 02/39] ARM: dts: meson8b: fix the operating voltage of the Mali GPU Date: Tue, 2 Jul 2019 22:14:37 -0400 Message-Id: <20190703021514.17727-2-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190703021514.17727-1-sashal@kernel.org> References: <20190703021514.17727-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Martin Blumenstingl [ 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