From patchwork Thu Apr 26 10:50:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jerome Brunet X-Patchwork-Id: 134486 Delivered-To: patch@linaro.org Received: by 10.46.151.6 with SMTP id r6csp2099202lji; Thu, 26 Apr 2018 03:50:55 -0700 (PDT) X-Google-Smtp-Source: AIpwx483aVy/Oxb1Aoi9x9GOdbI+c3gcAalYqlfdzrGf14eCIO6+oN5/cTuqS6xA5xhxiO/RoAVy X-Received: by 10.99.173.73 with SMTP id y9mr27250250pgo.179.1524739855409; Thu, 26 Apr 2018 03:50:55 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1524739855; cv=none; d=google.com; s=arc-20160816; b=cvt5y+TBr/D3BV3IZdAliVVcoI/8p10WH4RrFn2fwGzSF2ej5J34OE0gu4vmqBxrPx /zM6RjGwiLu2i+OPdPTx7bYbq33yyDcHSzcCyR4Z/rtvmeqIXlJisQKe9rmSHr6HdFJZ xQlR11ggN6BUgmwx51xj4XXxNTX8jzDLGfqbYA1dJ+/FvA2IhVlhHNR7pjlpjQdUKRgs XNFdy3/rFyiAimgWEidb3cYQ9PGp2bmyvyHgxaBxt/8Yc7tfw//EJPYY6ycUJ+1Xnyj8 57pNP/7raHyMfcyUQWXiv2/UoPObvCdgkObZYhleUbAzqxKYG1bXnulp7eABNkjxV6SP Lmng== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:subject:cc:to:from :dkim-signature:arc-authentication-results; bh=98Z7VkatdrscIBO8gbmAjwkRzlFI8XJcegyJW2zKbhM=; b=MbXNDthOw2u5QDMOVRCux7hfhUgFnA+Qav/+avqw6pPC6y6cexBO5X+FOEib2ko8k9 szY7HMo3EXZWmRJZj79Rv4rJtrY5oWW4VUOobE2p9Fi5+zbRisMsP3Ky5dWga1Wo+B5h ewC3L4enF3AWQ+SOOA/PtMo/mpxraQdvuDieEF2eoDV0DNUasvllXXoqbHjitUDv8GMk e3kFSPe30lDc209qXWPNYVzZH1Q74XaTXPmRcXNSCD+oPR2XsI1cVx5tg4EliSzxL/V9 g0KNlxVoXhhq+QBrjRIreUBXEQirV/rHKPnwoajiRifu2s3pvw5hrnexTvYXx70cuI/J a7tw== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@baylibre-com.20150623.gappssmtp.com header.s=20150623 header.b=CgG71HyE; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id w67si15892161pgb.447.2018.04.26.03.50.55; Thu, 26 Apr 2018 03:50:55 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@baylibre-com.20150623.gappssmtp.com header.s=20150623 header.b=CgG71HyE; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755242AbeDZKuy (ORCPT + 6 others); Thu, 26 Apr 2018 06:50:54 -0400 Received: from mail-wm0-f67.google.com ([74.125.82.67]:55040 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754998AbeDZKux (ORCPT ); Thu, 26 Apr 2018 06:50:53 -0400 Received: by mail-wm0-f67.google.com with SMTP id f6so12140290wmc.4 for ; Thu, 26 Apr 2018 03:50:52 -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:date:message-id; bh=g8tQ5xCuWUa2QyFrWbR0xnQ+cz+L1F7iYmo/jsna4y4=; b=CgG71HyENS0VLy9TG/z1UZBlaBSmgj9fCRPRbCnGSf9Dun+qblWsYq0WbLbWH7xlI4 s7ei5dX1wqD7b0VMSi39p3xoIks6KHq5yEUI2HNhxwjzj0jpnXLB8d8ruREhF/tSM8oY FtfKPq8JRftblRcx23umIAqie8WIjx2Nm5mstceko871l+6ksKPU9SEgZfW2f3NO8u5e rZ5qV+ndl3KwNHIgsCl611j39elDCT59+KWYTfTw355j712yQqWNCZBT888rgNNnOU68 uuajdGQUG40luXlCgIIjzIC3d7cil5vZBSf3VRoxpj45A2LpI4cKyrKaHwGjOLrnQo4n kk6Q== 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:date:message-id; bh=g8tQ5xCuWUa2QyFrWbR0xnQ+cz+L1F7iYmo/jsna4y4=; b=pUApy+YM99IhGCPrmltACy7eEQPu4M9tfiS2RUyM1ZmS7G1NDbeoTWC8UV9FiFXoVX AsQvST0P25jzHTGYV0/q+QtJLPutH1oa6zn/Z/XYSFTGiLvmNB4UAf7bVWfkiJXns2zq 2fjtNJbBOZqLAu7tDorpQBNyUc3Ch3iJGyrR0fDfrsmvynLEQoNZkKADDhYxeJaYeylJ Tun43+vCQJhINdvsdRCjPv12T8WehEQ8stvvSFPG3w8K/FNm86WqDkoU3z/8Gt96kaOi M1iRkYhMTKZfS3ytDNQWrGXjuYclRdpSslfmtLb/HM21lkfD1W8LbzgfIvixMQPL+Y58 6aHQ== X-Gm-Message-State: ALQs6tDXS0CTzC7yeb/rD+bSaBAWPtu/tleBPaM/zT6j+x7e5MY/iXDU IMpJ1R4OoaR527s0+U7+6hD86g== X-Received: by 10.28.20.212 with SMTP id 203mr1418812wmu.130.1524739852125; Thu, 26 Apr 2018 03:50:52 -0700 (PDT) Received: from boomer.baylibre.local ([2a01:e34:eeb6:4690:3146:aafc:91d9:4b96]) by smtp.googlemail.com with ESMTPSA id u14-v6sm18462419wri.31.2018.04.26.03.50.50 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 26 Apr 2018 03:50:51 -0700 (PDT) From: Jerome Brunet To: Carlo Caione , Kevin Hilman Cc: Jerome Brunet , devicetree@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] ARM64: dts: meson: disable sd-uhs modes on the libretech-cc Date: Thu, 26 Apr 2018 12:50:46 +0200 Message-Id: <20180426105046.14817-1-jbrunet@baylibre.com> X-Mailer: git-send-email 2.14.3 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org There is a problem with the sd-uhs mode when doing a soft reboot. Switching back from 1.8v to 3.3v messes with the card, which no longer respond (timeout errors). According to the specification, we should perform a card reset (power cycling the card) but this is something we cannot control on this design. Then the only solution to restore the communication with the card is an "unplug-plug" which is not acceptable Until we find a solution, if any, disable the sd-uhs modes on this design. For the people using uhs at the moment, there will a performance drop as a result. Fixes: 3cde63ebc85c ("ARM64: dts: meson-gxl: libretech-cc: enable high speed modes") Signed-off-by: Jerome Brunet --- arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts | 3 --- 1 file changed, 3 deletions(-) -- 2.14.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts index 3e3eb31748a3..f63bceb88caa 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts @@ -234,9 +234,6 @@ bus-width = <4>; cap-sd-highspeed; - sd-uhs-sdr12; - sd-uhs-sdr25; - sd-uhs-sdr50; max-frequency = <100000000>; disable-wp;