From: Balaji T K <balajitk@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mmc: omap_hsmmc: add adma support
Date: Mon, 12 May 2014 19:12:44 +0530 [thread overview]
Message-ID: <5370CFD4.5050309@ti.com> (raw)
In-Reply-To: <20140512132853.GZ22182@bill-the-cat>
On Monday 12 May 2014 06:58 PM, Tom Rini wrote:
> On Fri, May 02, 2014 at 07:25:20PM +0530, Balaji T K wrote:
>
>> MMC instance 1 and 2 is capable of ADMA in omap4, omap5.
>> Add support for ADMA and enable ADMA for read/write to
>> improve mmc throughput.
> [snip]
>> @@ -44,12 +45,30 @@
>> #undef OMAP_HSMMC_USE_GPIO
>> #endif
>>
>> +#ifdef CONFIG_SPL_BUILD
>> +#undef CONFIG_OMAP_MMC_ADMA
>> +#endif
>
> Why? Especially since a number of the folks interested in this for
> performance want it for SPL OS mode. Thanks!
Because in SoCs like OMAP4/5 mmc1/2 adma doesn't have access to sram.
So can't have descriptor or src / destination buffers (allocated on stack)
given by mmc core on sram.
Thanks and Regards,
Balaji T K.
>
next prev parent reply other threads:[~2014-05-12 13:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-02 13:55 [U-Boot] [PATCH] mmc: omap_hsmmc: add adma support Balaji T K
2014-05-12 13:21 ` Balaji T K
2014-05-12 13:28 ` Tom Rini
2014-05-12 13:42 ` Balaji T K [this message]
2014-05-12 14:50 ` Tom Rini
2014-05-15 14:15 ` Balaji T K
2014-05-15 17:55 ` Tom Rini
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