[RFC PATCH 0/2] hw/sd: Deprecate the SPI mode and the SPI to SD adapter

[Philippe Mathieu-Daudé]

On 7/6/20 6:41 PM, Alistair Francis wrote:
> On Sun, Jul 5, 2020 at 3:08 PM Philippe Mathieu-Daudé <f4bug at 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.
> 
> I think it's worth keeping.
> 
> I'm pretty sure the HiFive Unleashed (sifive_u in QEMU) uses SD over
> SPI. There isn't an upstream model but I think there are out of tree
> patches that hopefully one day will make it upstream.

Glad to hear that! :)

> 
> Alistair
> 
>>
>> Philippe Mathieu-Daudé (2):
>>   hw/sd/ssi-sd: Deprecate the SPI to SD card 'adapter'
>>   hw/sd/sdcard: Deprecate the SPI mode
>>
>>  docs/system/deprecated.rst | 10 ++++++++++
>>  1 file changed, 10 insertions(+)
>>
>> --
>> 2.21.3
>>
>>
>