From: Ulf Hansson <email@example.com> To: Avri Altman <Avri.Altman@wdc.com> Cc: "firstname.lastname@example.org" <email@example.com>, Adrian Hunter <firstname.lastname@example.org>, Linus Walleij <email@example.com>, Wolfram Sang <firstname.lastname@example.org>, Shawn Lin <email@example.com>, Masami Hiramatsu <firstname.lastname@example.org>, "email@example.com" <firstname.lastname@example.org>, "email@example.com" <firstname.lastname@example.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_sRF6NJgSn26Rsemail@example.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 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
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