From: Arend van Spriel <arend@broadcom.com>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
linux-mmc <linux-mmc@vger.kernel.org>,
Aaron Lu <aaron.lu@intel.com>, Philip Rakity <prakity@nvidia.com>,
Al Cooper <alcooperx@gmail.com>, Neil Brown <neil@brown.name>
Subject: Re: [PATCH V4 01/15] mmc: host: Add facility to support re-tuning
Date: Tue, 14 Apr 2015 18:52:10 +0200 [thread overview]
Message-ID: <552D45BA.9090403@broadcom.com> (raw)
In-Reply-To: <552D183B.5080409@intel.com>
On 04/14/15 15:38, Adrian Hunter wrote:
>> To enumerate a SDIO card the mmc core first needs to apply power to
>> > it. At this point the PM domain isn't yet attached to the SDIO func
>> > device (the device doesn't even exist yet) and thus it can't be used
>> > to provide power the card. Right?
> In the ACPI case the SDIO function device ACPI nodes are children of the
> host controller ACPI node. One possibility is to have the host controller
> driver power on its children.
This has recently been added to the DT as well as some SDIO devices
first need to be powered to be discoverable.
Regards,
Arend
next prev parent reply other threads:[~2015-04-14 16:52 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-27 20:57 [PATCH V4 00/15] mmc: host: Add facility to support re-tuning Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 01/15] " Adrian Hunter
2015-04-01 9:50 ` Ulf Hansson
2015-04-01 11:47 ` Adrian Hunter
2015-04-01 15:10 ` Arend van Spriel
2015-04-02 8:43 ` Ulf Hansson
2015-04-02 10:30 ` Arend van Spriel
2015-04-02 12:10 ` Ulf Hansson
2015-04-02 12:18 ` Adrian Hunter
2015-04-02 12:25 ` Ulf Hansson
2015-04-02 12:27 ` Arend van Spriel
2015-04-02 12:43 ` Adrian Hunter
2015-04-02 14:00 ` Ulf Hansson
2015-04-03 2:59 ` NeilBrown
2015-04-08 7:42 ` Adrian Hunter
2015-04-13 12:07 ` Ulf Hansson
2015-04-14 13:38 ` Adrian Hunter
2015-04-14 16:52 ` Arend van Spriel [this message]
2015-04-16 7:24 ` Ulf Hansson
2015-04-16 8:59 ` Adrian Hunter
2015-04-16 11:28 ` Ulf Hansson
2015-04-02 13:05 ` Ulf Hansson
2015-04-02 16:18 ` Adrian Hunter
2015-04-13 12:30 ` Ulf Hansson
2015-04-14 13:13 ` Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 02/15] mmc: core: Disable re-tuning when card is no longer initialized Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 03/15] mmc: core: Add support for re-tuning before each request Adrian Hunter
2015-04-01 10:13 ` Ulf Hansson
2015-04-01 12:08 ` Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 04/15] mmc: core: Check re-tuning before retrying Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 05/15] mmc: core: Hold re-tuning during switch commands Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 06/15] mmc: core: Hold re-tuning during erase commands Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 07/15] mmc: core: Hold re-tuning while bkops ongoing Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 08/15] mmc: mmc: Comment that callers need to hold re-tuning if the card is put to sleep Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 09/15] mmc: core: Separate out the mmc_switch status check so it can be re-used Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 10/15] mmc: core: Add support for HS400 re-tuning Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 11/15] mmc: sdhci: Change to new way of doing re-tuning Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 12/15] mmc: sdhci: Flag re-tuning is needed on CRC or End-Bit errors Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 13/15] mmc: block: Check re-tuning in the recovery path Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 14/15] mmc: block: Retry errored data requests when re-tuning is needed Adrian Hunter
2015-03-27 20:57 ` [PATCH V4 15/15] mmc: core: Don't print reset warning if reset is not supported Adrian Hunter
2015-04-01 6:21 ` [PATCH V4 00/15] mmc: host: Add facility to support re-tuning Adrian Hunter
2015-04-10 10:39 ` Adrian Hunter
2015-04-10 10:52 ` Ulf Hansson
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=552D45BA.9090403@broadcom.com \
--to=arend@broadcom.com \
--cc=aaron.lu@intel.com \
--cc=adrian.hunter@intel.com \
--cc=alcooperx@gmail.com \
--cc=linux-mmc@vger.kernel.org \
--cc=neil@brown.name \
--cc=prakity@nvidia.com \
--cc=ulf.hansson@linaro.org \
/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).