RE: [RFC PATCH] mmc: renesas_sdhi_internal_dmac: limit DMA RX for old SoCs

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Hi Wolfram-san,

Thank you for the patch!

> From: Wolfram Sang, Sent: Thursday, April 5, 2018 1:45 AM
> 
> From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> 
> Early revisions of certain SoCs cannot do multiple DMA RX streams in
> parallel. To avoid data corruption, only allow one DMA RX channel and
> fall back to PIO, if needed.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
> ---
<snip>
> Shimoda-san: what do you think of this approach? Please note that I didn't
> remove the 'revision' from the whitelist yet. This will be done incrementally.
> I thought to first fix the data corruption issue.

This approach is nice to me.

I checked this patch and looks good. So,

Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>

And, our test team tested this patch and works correctly. So,

Tested-by: Nguyen Viet Dung <dung.nguyen.aj@xxxxxxxxxxx>

Best regards,
Yoshihiro Shimoda





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