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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 3D3C0C04AB4 for ; Wed, 15 May 2019 00:01:52 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 088962082E for ; Wed, 15 May 2019 00:01:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="IJXxRbgA"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="tX7XsRCa" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 088962082E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References :In-Reply-To:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=SZCxvyaI4Fus21kcsjQotDJ5BfRCbiZnDacQLA4yAXg=; b=IJXxRbgAciH49z MI2H5SpgtGA4gXfQT5nvBvW0eyHVQNAaJzK2QKzaFjyft5RGDC/hgBWXoFPG3inpCll1ngRheUhV9 diHKnQ0uC4Mi9MPaLrstDWikwOhWYLpldkQivPwDZNEzTiIZaQWYmsZKTKIXF3PRghNU211q+8ptV deaOPwbX3Gw34/+2wL9mMc5MNLd5B8ILApedb6laYVg2w6o57CS+XQVIX3RbFQ8AS66xuSrWoU8yz cKtzzX1j3ZIPR+xCkxBs9RcAH/amJBP2mWICRw7DVkva9gfgM4cFJH0VOQfqxeh1vHpaSP5DsiU5Y hMZNmjhIfdr9LEzS9EDw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hQhMe-0002Wi-N0; Wed, 15 May 2019 00:01:44 +0000 Received: from mail-pf1-x442.google.com ([2607:f8b0:4864:20::442]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hQhMa-0002Uz-4L for linux-arm-kernel@lists.infradead.org; Wed, 15 May 2019 00:01:41 +0000 Received: by mail-pf1-x442.google.com with SMTP id c6so330228pfa.10 for ; Tue, 14 May 2019 17:01:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:in-reply-to:references:date:message-id :mime-version; bh=Fl4BRNGtm92dLl/qzsGLS8SvffFbPXXhiHpwATSSiyU=; b=tX7XsRCaevKkmFvq8xy+sLXC6agZnWKTOukEF5WmKqJWO7syyKlQ2wsBCfil36LpLc mGlid7DLUx1dXCo0KeqHIx2sUi4nerLRHCzysY+ERtFErlU4bgmKwSpt/kEySf9ShL99 Nc1Wp8TqRW/KaqEa81fDD/8gvS/tDUs/3ZYzDJmihvXXvXBvle3OYpXPWYJXo/JUYG06 CxmiHlVfWhvL9JU7Cbk4RjA7TQt6iOY0+pKbm5iXrCqvis9BcB18g49DkbteGGEx0pOM ILitRlt7sHfp1a3edNzxFH+/qX+a8srD/b5530Ze8vMyEgOu4CRVYuJiqaNMeCH9g1vi weIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version; bh=Fl4BRNGtm92dLl/qzsGLS8SvffFbPXXhiHpwATSSiyU=; b=fYFkf62fDUpB0/kzt781IEgBeW/wyTMiDQtcCY5GEY43OoNn4h4hWQ5SnMNox8ZXEg Q4WwfPK7L8/mmijpcF65I4M88nm4ZVi7PMtfZl2BnX0QuUEOzkfngk/yawbrpA8VpD7f 6vhMyhqfl6T11j6itN7/V3y7axM9Gitk0nuxbM1enzXPcquXitl/8/JqeyOn6yWM8TkZ u2pj2s9LaOnVljVRD/GoM/op1vea45/VnlDM2ZT/lxNgkzGjb8F41koHW87SfwMDpXVP aL7VbOufjnslcepw0sSo9xKLStViBOUmfDisBeFCUYGixWvh4jTCmBJ5NSZzIUfNZhXH QT/g== X-Gm-Message-State: APjAAAUyFfIpJ5f/aAV5R/WdtgoudDLx5SzWX/a6RNoYGcd4NdjmWWC6 M82ZI9NYByRN61PHY9cpQofRgw== X-Google-Smtp-Source: APXvYqwHZa5sICwqraZ9H1QVEAfGb9MwKOmlBlqopDcas/BnamGKzAjjpLLEttGsYJaVEihf/p/OVQ== X-Received: by 2002:a63:5211:: with SMTP id g17mr11987172pgb.405.1557878498529; Tue, 14 May 2019 17:01:38 -0700 (PDT) Received: from localhost ([2601:602:9200:a1a5:fd66:a9bc:7c2c:636a]) by smtp.googlemail.com with ESMTPSA id a80sm331973pfj.105.2019.05.14.17.01.37 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 14 May 2019 17:01:37 -0700 (PDT) From: Kevin Hilman To: Martin Blumenstingl , linux-amlogic@lists.infradead.org Subject: Re: [PATCH 1/1] ARM: dts: meson8b: fix the operating voltage of the Mali GPU In-Reply-To: <20190512193936.26557-2-martin.blumenstingl@googlemail.com> References: <20190512193936.26557-1-martin.blumenstingl@googlemail.com> <20190512193936.26557-2-martin.blumenstingl@googlemail.com> Date: Tue, 14 May 2019 17:01:37 -0700 Message-ID: <7hwoisd1r2.fsf@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190514_170140_167916_212CEE6D X-CRM114-Status: GOOD ( 12.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Martin Blumenstingl , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Martin Blumenstingl writes: > 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 Queued as a fix for v5.2-rc (branch: v5.2/fixes) Kevin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel