From: Tom Rini <trini@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mmc: omap_hsmmc: add adma support
Date: Mon, 12 May 2014 10:50:02 -0400 [thread overview]
Message-ID: <20140512145002.GD22182@bill-the-cat> (raw)
In-Reply-To: <5370CFD4.5050309@ti.com>
On Mon, May 12, 2014 at 07:12:44PM +0530, Balaji T K wrote:
> 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.
And we can't malloc them?
--
Tom
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next prev parent reply other threads:[~2014-05-12 14:50 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
2014-05-12 14:50 ` Tom Rini [this message]
2014-05-15 14:15 ` Balaji T K
2014-05-15 17:55 ` Tom Rini
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