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Message-ID: <a8d1f20c-9ff0-2796-d31f-7ef6f11ee6a4@collabora.com>
Date:   Tue, 6 Jun 2023 13:41:54 +0200
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Subject: Re: [PATCH v5 1/1] mmc: mtk-sd: reduce CIT for better performance
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To:     Wenbin Mei <wenbin.mei@mediatek.com>,
        Ulf Hansson <ulf.hansson@linaro.org>
Cc:     Chaotian Jing <chaotian.jing@mediatek.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Ritesh Harjani <riteshh@codeaurora.org>,
        Asutosh Das <asutoshd@codeaurora.org>,
        linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org,
        kernel test robot <lkp@intel.com>
References: <20230606113249.28057-1-wenbin.mei@mediatek.com>
 <20230606113249.28057-2-wenbin.mei@mediatek.com>
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
In-Reply-To: <20230606113249.28057-2-wenbin.mei@mediatek.com>
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Il 06/06/23 13:32, Wenbin Mei ha scritto:
> 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.
> 
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>