* [U-Boot] MMC0: DMA transfer failed
@ 2012-04-02 14:01 Fabio Estevam
2012-04-02 14:41 ` Marek Vasut
2012-04-02 14:53 ` Stefano Babic
0 siblings, 2 replies; 6+ messages in thread
From: Fabio Estevam @ 2012-04-02 14:01 UTC (permalink / raw)
To: u-boot
Hi,
On a mx28evk board I am getting the following using top of tree U-boot:
U-Boot 2012.04-rc1-00001-g037cbfd (Apr 02 2012 - 10:57:48)
Freescale i.MX28 family at 454 MHz
DRAM: 128 MiB
MMC: MXS MMC: 0
MMC0: DMA transfer failed
MMC0: DMA transfer failed
MMC0: DMA transfer failed
MMC0: DMA transfer failed
MMC init failed
Using default environment
Is there any patch I am missing?
Thanks,
Fabio Estevam
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] MMC0: DMA transfer failed
2012-04-02 14:01 [U-Boot] MMC0: DMA transfer failed Fabio Estevam
@ 2012-04-02 14:41 ` Marek Vasut
2012-04-02 15:40 ` Fabio Estevam
2012-04-02 14:53 ` Stefano Babic
1 sibling, 1 reply; 6+ messages in thread
From: Marek Vasut @ 2012-04-02 14:41 UTC (permalink / raw)
To: u-boot
Dear Fabio Estevam,
> Hi,
>
> On a mx28evk board I am getting the following using top of tree U-boot:
>
> U-Boot 2012.04-rc1-00001-g037cbfd (Apr 02 2012 - 10:57:48)
>
> Freescale i.MX28 family at 454 MHz
> DRAM: 128 MiB
> MMC: MXS MMC: 0
> MMC0: DMA transfer failed
> MMC0: DMA transfer failed
> MMC0: DMA transfer failed
> MMC0: DMA transfer failed
> MMC init failed
> Using default environment
No, it means I might just have a good card and I didn't notice this. I really do
need to get some crappy (new) cards to track down these issues. Fabio, can you
please try debugging this?
> Is there any patch I am missing?
>
> Thanks,
>
> Fabio Estevam
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] MMC0: DMA transfer failed
2012-04-02 14:01 [U-Boot] MMC0: DMA transfer failed Fabio Estevam
2012-04-02 14:41 ` Marek Vasut
@ 2012-04-02 14:53 ` Stefano Babic
2012-04-02 15:01 ` Marek Vasut
1 sibling, 1 reply; 6+ messages in thread
From: Stefano Babic @ 2012-04-02 14:53 UTC (permalink / raw)
To: u-boot
On 02/04/2012 16:01, Fabio Estevam wrote:
> Hi,
>
> On a mx28evk board I am getting the following using top of tree U-boot:
>
> U-Boot 2012.04-rc1-00001-g037cbfd (Apr 02 2012 - 10:57:48)
>
> Freescale i.MX28 family at 454 MHz
> DRAM: 128 MiB
> MMC: MXS MMC: 0
> MMC0: DMA transfer failed
> MMC0: DMA transfer failed
> MMC0: DMA transfer failed
> MMC0: DMA transfer failed
> MMC init failed
> Using default environment
>
> Is there any patch I am missing?
Hi Fabio,
maybe it is worth to check first if it depends on the data cache, that
is now turned on. Add CONFIG_CMD_CACHE to the configuartion file, and
try to start mmc with and without dcache.
Best regards,
Stefano
--
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Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] MMC0: DMA transfer failed
2012-04-02 14:53 ` Stefano Babic
@ 2012-04-02 15:01 ` Marek Vasut
0 siblings, 0 replies; 6+ messages in thread
From: Marek Vasut @ 2012-04-02 15:01 UTC (permalink / raw)
To: u-boot
Dear Stefano Babic,
> On 02/04/2012 16:01, Fabio Estevam wrote:
> > Hi,
> >
> > On a mx28evk board I am getting the following using top of tree U-boot:
> >
> > U-Boot 2012.04-rc1-00001-g037cbfd (Apr 02 2012 - 10:57:48)
> >
> > Freescale i.MX28 family at 454 MHz
> > DRAM: 128 MiB
> > MMC: MXS MMC: 0
> > MMC0: DMA transfer failed
> > MMC0: DMA transfer failed
> > MMC0: DMA transfer failed
> > MMC0: DMA transfer failed
> > MMC init failed
> > Using default environment
> >
> > Is there any patch I am missing?
>
> Hi Fabio,
>
> maybe it is worth to check first if it depends on the data cache, that
> is now turned on. Add CONFIG_CMD_CACHE to the configuartion file, and
> try to start mmc with and without dcache.
The cache should be off on m28evk and so should be on mx28evk.
> Best regards,
> Stefano
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] MMC0: DMA transfer failed
2012-04-02 14:41 ` Marek Vasut
@ 2012-04-02 15:40 ` Fabio Estevam
2012-04-02 16:34 ` Marek Vasut
0 siblings, 1 reply; 6+ messages in thread
From: Fabio Estevam @ 2012-04-02 15:40 UTC (permalink / raw)
To: u-boot
On Mon, Apr 2, 2012 at 11:41 AM, Marek Vasut <marek.vasut@gmail.com> wrote:
> No, it means I might just have a good card and I didn't notice this. I really do
> need to get some crappy (new) cards to track down these issues. Fabio, can you
> please try debugging this?
Ok, I am debugging this.
What do you think about the change below?
--- a/drivers/mmc/mxsmmc.c
+++ b/drivers/mmc/mxsmmc.c
@@ -191,7 +191,7 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct
else
cache_data_count = data_count;
- if (data->flags & MMC_DATA_READ) {
+ if (data->flags & MMC_DATA_WRITE) {
priv->desc->cmd.data = MXS_DMA_DESC_COMMAND_DMA_WRITE;
priv->desc->cmd.address = (dma_addr_t)data->dest;
} else {
It doesn't fix this issue, but it seems correct.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] MMC0: DMA transfer failed
2012-04-02 15:40 ` Fabio Estevam
@ 2012-04-02 16:34 ` Marek Vasut
0 siblings, 0 replies; 6+ messages in thread
From: Marek Vasut @ 2012-04-02 16:34 UTC (permalink / raw)
To: u-boot
Dear Fabio Estevam,
> On Mon, Apr 2, 2012 at 11:41 AM, Marek Vasut <marek.vasut@gmail.com> wrote:
> > No, it means I might just have a good card and I didn't notice this. I
> > really do need to get some crappy (new) cards to track down these
> > issues. Fabio, can you please try debugging this?
>
> Ok, I am debugging this.
>
> What do you think about the change below?
>
> --- a/drivers/mmc/mxsmmc.c
> +++ b/drivers/mmc/mxsmmc.c
> @@ -191,7 +191,7 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
> struct else
> cache_data_count = data_count;
>
> - if (data->flags & MMC_DATA_READ) {
> + if (data->flags & MMC_DATA_WRITE) {
> priv->desc->cmd.data = MXS_DMA_DESC_COMMAND_DMA_WRITE;
> priv->desc->cmd.address = (dma_addr_t)data->dest;
> } else {
>
> It doesn't fix this issue, but it seems correct.
No it's not, when you do SD READ, you read the data into the dest buffer.
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-04-02 16:34 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-04-02 14:01 [U-Boot] MMC0: DMA transfer failed Fabio Estevam
2012-04-02 14:41 ` Marek Vasut
2012-04-02 15:40 ` Fabio Estevam
2012-04-02 16:34 ` Marek Vasut
2012-04-02 14:53 ` Stefano Babic
2012-04-02 15:01 ` Marek Vasut
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