linux-kernel - Re: [PATCH 1/3] mfd:mmc:rtsx: Change default tx phase

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Message-ID: <20130821084842.GE29850@lee--X1>
Date:	Wed, 21 Aug 2013 09:48:42 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	wei_wang@...lsil.com.cn
Cc:	cjb@...top.org, sameo@...ux.intel.com,
	devel@...uxdriverproject.org, linux-kernel@...r.kernel.org,
	linux-mmc@...r.kernel.org, gregkh@...uxfoundation.org,
	rogerable@...ltek.com
Subject: Re: [PATCH 1/3] mfd:mmc:rtsx: Change default tx phase

On Wed, 21 Aug 2013, wei_wang@...lsil.com.cn wrote:

> From: Wei WANG <wei_wang@...lsil.com.cn>
> 
> The default phase can meet most cards' requirement, but it is not the
> optimal one. In some extreme situation, the rx phase point produced by
> the following tuning process will drift quite a distance.
> Before tuning UHS card, this patch will set a more proper initial tx
> phase point, which is calculated from statistic data, and can achieve
> a much better tx signal quality.
> 
> Signed-off-by: Wei WANG <wei_wang@...lsil.com.cn>
> ---
>  drivers/mfd/rtl8411.c             |    4 +++
>  drivers/mfd/rts5209.c             |    2 ++
>  drivers/mfd/rts5227.c             |    2 ++
>  drivers/mfd/rts5229.c             |    2 ++
>  drivers/mfd/rts5249.c             |    2 ++
>  drivers/mmc/host/rtsx_pci_sdmmc.c |   58 +++++++++++++++++++++++++++----------
>  include/linux/mfd/rtsx_pci.h      |   15 ++++++++++
>  7 files changed, 69 insertions(+), 16 deletions(-)

MFD parts looks okay to me:

Acked-by: Lee Jones <lee.jones@...aro.org>

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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