linux-kernel - Re: [PATCH 1/5 v2] mmc: bfin_sdh: limit mmc DMA segment len to 1 for bf518.

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Message-ID: <CAJxxZ0OARrRmYZZcwSSi-hEEb6B39wOTA26WT1gtfWfipR+=3A@mail.gmail.com>
Date:	Mon, 18 Jun 2012 14:31:26 +0800
From:	Sonic Zhang <sonic.adi@...il.com>
To:	Chris Ball <cjb@...top.org>, linux-mmc@...r.kernel.org
Cc:	LKML <linux-kernel@...r.kernel.org>,
	uclinux-dist-devel@...ckfin.uclinux.org,
	Sonic Zhang <sonic.zhang@...log.com>
Subject: Re: [PATCH 1/5 v2] mmc: bfin_sdh: limit mmc DMA segment len to 1 for bf518.

Hi Chris,

Could you please comment on the patches for blackfin SD controller driver?

Thanks

Sonic

On Thu, Jun 14, 2012 at 5:22 PM, Sonic Zhang <sonic.adi@...il.com> wrote:
> From: Sonic Zhang <sonic.zhang@...log.com>
>
> bf518 RSI dma doesn't work in array mode.
>
> Signed-off-by: Sonic Zhang <sonic.zhang@...log.com>
> ---
>  drivers/mmc/host/bfin_sdh.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c
> index 0366617..fd25b0c 100644
> --- a/drivers/mmc/host/bfin_sdh.c
> +++ b/drivers/mmc/host/bfin_sdh.c
> @@ -469,7 +469,11 @@ static int __devinit sdh_probe(struct platform_device *pdev)
>        }
>
>        mmc->ops = &sdh_ops;
> +#if defined(CONFIG_BF54x)
>        mmc->max_segs = 32;
> +#elif defined(CONFIG_BF51x)
> +       mmc->max_segs = 1;
> +#endif
>        mmc->max_seg_size = 1 << 16;
>        mmc->max_blk_size = 1 << 11;
>        mmc->max_blk_count = 1 << 11;
> --
> 1.7.0.4
>
>
> --
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