linux-kernel - Re: [RFC PATCH 0/3] DRA72: MMC HS200 support

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Message-ID: <5464C699.3080301@ti.com>
Date:	Thu, 13 Nov 2014 20:26:25 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	<chris@...ntf.net>, <ulf.hansson@...aro.org>, <tony@...mide.com>
CC:	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-mmc@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<afenkart@...il.com>, <nsekhar@...com>
Subject: Re: [RFC PATCH 0/3] DRA72: MMC HS200 support

Hi,

Sorry for sending this multiple times. There was some problem with my mail
configuration which I have fixed now.

Thanks
Kishon

On Thursday 13 November 2014 08:24 PM, Kishon Vijay Abraham I wrote:
> Added HS200 to improve EMMC throughput for dra72.
> 
> With HS200
> ==============
> Read throughput
> ./dd if=/dev/mmcblk0 of=/dev/null bs=1M count=100 oflag=sync
> 100+0 records in
> 100+0 records out
> 104857600 bytes (105 MB) copied, 1.46028 s, 71.8 MB/s
> 
> Write throughput
> root@...7xx-evm:/# ./dd if=/dev/zero of=/dev/mmcblk0 bs=1M count=100 oflag=sync
> 100+0 records in
> 100+0 records out
> 104857600 bytes (105 MB) copied, 9.34884 s, 11.2 MB/s
> 
> 
> WithOUT HS200
> ==============
> Read throughput
> ./dd if=/dev/mmcblk0 of=/dev/null bs=1M count=100 oflag=sync
> 100+0 records in
> 100+0 records out
> 104857600 bytes (105 MB) copied, 2.6423 s, 39.7 MB/s
> 
> Write throughput
> ./dd if=/dev/zero of=/dev/mmcblk0 bs=1M count=100 oflag=sync
> 100+0 records in
> 100+0 records out
> 104857600 bytes (105 MB) copied, 9.3556 s, 11.2 MB/s
> 
> Balaji T K (1):
>   mmc: omap_hsmmc: add tuning support
> 
> Kishon Vijay Abraham I (1):
>   ARM: dts: dra72-evm: Set the max-frequency to 192MHz
> 
> Viswanath Puttagunta (1):
>   mmc: omap_hsmmc: set host capabilities by reading MMCHS_CAPA2
>     register
> 
>  arch/arm/boot/dts/dra72-evm.dts |    1 +
>  drivers/mmc/host/omap_hsmmc.c   |  342 ++++++++++++++++++++++++++++++++++++++-
>  2 files changed, 341 insertions(+), 2 deletions(-)
> 
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