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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41C36C7EE29 for ; Wed, 7 Jun 2023 11:09:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240236AbjFGLJL (ORCPT ); Wed, 7 Jun 2023 07:09:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46890 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240269AbjFGLJG (ORCPT ); Wed, 7 Jun 2023 07:09:06 -0400 Received: from mail-wm1-x336.google.com (mail-wm1-x336.google.com [IPv6:2a00:1450:4864:20::336]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C0601FCD for ; Wed, 7 Jun 2023 04:08:34 -0700 (PDT) Received: by mail-wm1-x336.google.com with SMTP id 5b1f17b1804b1-3f732d37d7cso43965225e9.2 for ; Wed, 07 Jun 2023 04:08:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20221208.gappssmtp.com; s=20221208; t=1686136112; x=1688728112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=BXdQfD8VSWsZR3Vi8Y0WmvbNHXZH6Vk6c/6DrYZtkC8=; b=QTGW/Vu9XZf4s5MS2p6ojUMV554GSqknEVOpWK5rGAZhbYaLpwTl8/+tjQONBnIaq+ K5z2TQrCWI6tT7yx3jDljuWe41E4Jg5nbdX4Yea9exFxwTVouVkdpV5zdWrHi6l5W2IK yFwXMY//lgwBCYuN5i+RJLudw4GNG9rdqe7DJ4eMM4ygSpbYRfzrx4iIMaWkG2QMw712 cHOnQKkKpZ0U5OGRfZBYI+pilulQqDFrBrvzbOqBL5EgKFX/mXVH7f8U/qB/eyxuTtMg GiTCZZLVG8J5A0SPIZ/uZPAJKab2DTYhNxRWEXS3tIwN/p9sSPvWv0gmfxTki0GS1Cld PTOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686136112; x=1688728112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=BXdQfD8VSWsZR3Vi8Y0WmvbNHXZH6Vk6c/6DrYZtkC8=; b=aDRYPN354Ub/IvGXiwvRC2JUaxaRANH10jr4jQXdj7HOIYeG8xXJkUQdwfXUzdXUvI kXXJFHqslAqv5Wpy9eGsW8C35yP7Q54SZXVESgk6I+EZS73k9oeyelOVF+w/Mm8Z3fTS Bny0VOAG73dkpre2D628Z8EJdcBbZN6WGEGrmpEayo6TE8wzxgjbIuUlliy7ZkiPDnDJ jckWz4MWn6b9s4SDx5f+juKNUIwAKoXoP2KDz7/UQnV1zVzvYuW/VIUpJOj3HX7zquE1 1tsOPt9UvkbqsNFCADinh+AvEm8zfyhmlN47TGvcEkNXxG0Bj/4vGHfeYIFwplSwJQxp K1VQ== X-Gm-Message-State: AC+VfDzJPCRrFmLKIFwvIH+uTENNLCUbAthHoLirPvOadiioGLfquRwG 6hsI4oqlzOUUZyZ2/OI2ZyYUWg== X-Google-Smtp-Source: ACHHUZ5cgp+HJScZGL+i7YPbTv0GsIwRUhE+kDDIAWVzH4PmbSPpPjc3VBa/gfSJIjWg0y/3D8pOUw== X-Received: by 2002:a5d:63ca:0:b0:30e:41c5:9715 with SMTP id c10-20020a5d63ca000000b0030e41c59715mr6529879wrw.47.1686136112241; Wed, 07 Jun 2023 04:08:32 -0700 (PDT) Received: from [192.168.1.172] (158.22.5.93.rev.sfr.net. [93.5.22.158]) by smtp.gmail.com with ESMTPSA id m4-20020a5d6a04000000b0030aea925fbesm15020875wru.50.2023.06.07.04.08.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 07 Jun 2023 04:08:31 -0700 (PDT) Message-ID: Date: Wed, 7 Jun 2023 13:08:30 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH v5 1/1] mmc: mtk-sd: reduce CIT for better performance Content-Language: en-US To: Wenbin Mei , Ulf Hansson Cc: Chaotian Jing , Matthias Brugger , AngeloGioacchino Del Regno , Adrian Hunter , Ritesh Harjani , Asutosh Das , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, kernel test robot References: <20230606113249.28057-1-wenbin.mei@mediatek.com> <20230606113249.28057-2-wenbin.mei@mediatek.com> From: Alexandre Mergnat In-Reply-To: <20230606113249.28057-2-wenbin.mei@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org On 06/06/2023 13:32, Wenbin Mei wrote: > CQHCI_SSC1 indicates to CQE the polling period to use when using periodic > SEND_QUEUE_STATUS(CMD13) polling. > Since MSDC CQE uses msdc_hclk as ITCFVAL, so driver should use hclk > frequency to get the actual time. > The default value 0x1000 that corresponds to 150us for MediaTek SoCs, let's > decrease it to 0x40 that corresponds to 2.35us, which can improve the > performance of some eMMC devices. Reviewed-by: Alexandre Mergnat -- Regards, Alexandre