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Re: [RFC PATCH 0/2] hw/sd: Deprecate the SPI mode and the SPI to SD adap
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From: |
Bin Meng |
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Subject: |
Re: [RFC PATCH 0/2] hw/sd: Deprecate the SPI mode and the SPI to SD adapter |
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Date: |
Fri, 10 Jul 2020 17:27:37 +0800 |
Hi Philippe,
On Mon, Jul 6, 2020 at 6:07 AM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
> I tried to maintain the SPI mode because it is useful in
> tiny embedded devices, and thought it would be helpful for
> the AVR MCUs.
> As AVR was blocked, I thought it was wise to deprecate the
> SPI mode as users are interested in the faster MMC mode.
> Today Thomas surprised me by posting an update of it!
> https://www.mail-archive.com/qemu-devel@nongnu.org/msg720089.html
>
> I'm still posting this as RFC to discuss, but I'm reconsiderating
> keeping this mode a bit more.
>
AFAIK, SiFive folks (Pragnesh in cc) are investigating supporting QSPI
model on "sifive_u" machine, and it will definitely use this SPI over
SD model.
In fact, the QSPI is the last big gap in the "sifive_u" machine to
make it a complete platform for hardware replacement.
Regards,
Bin