From: Ulf Hansson <ulf.hansson@linaro.org>
To: Avri Altman <Avri.Altman@wdc.com>
Cc: "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Linus Walleij <linus.walleij@linaro.org>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Shawn Lin <shawn.lin@rock-chips.com>,
Masami Hiramatsu <masami.hiramatsu@linaro.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/2] mmc: core: Implement support for cache ctrl for SD cards
Date: Mon, 10 May 2021 11:44:10 +0200 [thread overview]
Message-ID: <CAPDyKFqQe5aYqF6iNppY66EfkVNPce_sRF6NJgSn26Rs=_=jxw@mail.gmail.com> (raw)
In-Reply-To: <DM6PR04MB657511CDCE94264D080F006CFC549@DM6PR04MB6575.namprd04.prod.outlook.com>
On Mon, 10 May 2021 at 09:40, Avri Altman <Avri.Altman@wdc.com> wrote:
>
> > In the SD spec v6.x the SD function extension registers for performance
> > enhancements were introduced. As a part of this an optional internal cache
> > on
> > the SD card can be used to improve performance.
> Just to verify that you are aware of that:
> In addition to the extension Registers that were defined in the physical core spec,
> there was a separate document that was released that suggest a common OS API's to those registers.
> It is called "SD specification part A5, SD Extensions API specification".
Thanks for the pointer!
I did have a very brief look at this. The conclusion I made is that
this is way over designed to enable support for features like cache
and poweroff notification. However, there may be other use cases that
could benefit from a user space library, along the lines of the SD
Extensions API, but I can't really tell.
Do you have an interest around this that you can share?
Thanks for reviewing!
Kind regards
Uffe
next prev parent reply other threads:[~2021-05-10 9:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-06 14:58 [PATCH 0/2] mmc: core: Implement support for cache ctrl for SD cards Ulf Hansson
2021-05-06 14:58 ` [PATCH 1/2] mmc: core: Move eMMC cache flushing to a new bus_ops callback Ulf Hansson
2021-05-07 7:15 ` Avri Altman
2021-05-09 18:48 ` Linus Walleij
2021-05-06 14:58 ` [PATCH 2/2] mmc: core: Add support for cache ctrl for SD cards Ulf Hansson
2021-05-09 19:01 ` Linus Walleij
2021-05-10 14:32 ` Ulf Hansson
2021-05-10 9:10 ` Avri Altman
2021-05-10 10:41 ` Avri Altman
2021-05-10 14:41 ` Ulf Hansson
2021-05-11 8:22 ` Avri Altman
2021-05-10 7:39 ` [PATCH 0/2] mmc: core: Implement " Avri Altman
2021-05-10 9:44 ` Ulf Hansson [this message]
2021-05-10 10:12 ` Avri Altman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAPDyKFqQe5aYqF6iNppY66EfkVNPce_sRF6NJgSn26Rs=_=jxw@mail.gmail.com' \
--to=ulf.hansson@linaro.org \
--cc=Avri.Altman@wdc.com \
--cc=adrian.hunter@intel.com \
--cc=linus.walleij@linaro.org \
--cc=linux-block@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=masami.hiramatsu@linaro.org \
--cc=shawn.lin@rock-chips.com \
--cc=wsa+renesas@sang-engineering.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).