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Date:   Mon, 24 Feb 2020 11:42:28 +0800
From:   Shawn Guo <shawnguo@kernel.org>
To:     Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Cc:     "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        Marcel Ziswiler <marcel.ziswiler@toradex.com>,
        Igor Opanyuk <igor.opanyuk@toradex.com>,
        Philippe Schenker <philippe.schenker@toradex.com>,
        Fabio Estevam <festevam@gmail.com>,
        Mark Rutland <mark.rutland@arm.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Rob Herring <robh+dt@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Stefan Agner <stefan@agner.ch>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] ARM: dts: imx7-colibri: Fix frequency for sd/mmc
Message-ID: <20200224034228.GI27688@dragon>
References: <20200219131121.3565738-1-oleksandr.suvorov@toradex.com>
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On Wed, Feb 19, 2020 at 01:11:24PM +0000, Oleksandr Suvorov wrote:
> SD/MMC on Colibri iMX7S/D modules successfully support
> 200Mhz frequency in HS200 mode.
> 
> Removing the unnecessary max-frequency limit significantly
> increases the performance:
> 
> == before fix ====
> root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
> /dev/mmcblk0:
>  Timing buffered disk reads: 252 MB in  3.02 seconds =  83.54 MB/sec
> ==================
> 
> === after fix ====
> root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
> /dev/mmcblk0:
>  Timing buffered disk reads: 408 MB in  3.00 seconds = 135.94 MB/sec
> ==================
> 
> Fixes: f928a4a377e4 ("ARM: dts: imx7: add Toradex Colibri iMX7D 1GB (eMMC) support")
> Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
> Reviewed-by: Fabio Estevam <festevam@gmail.com>

Applied, thanks.