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

From: Philippe Mathieu-Daudé
Subject: Re: [RFC PATCH 0/2] hw/sd: Deprecate the SPI mode and the SPI to SD adapter
Date: Mon, 6 Jul 2020 19:37:36 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0

On 7/6/20 6:41 PM, Alistair Francis wrote:
> On Sun, Jul 5, 2020 at 3:08 PM 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.
> 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

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