From: Stephen Boyd <sboyd@codeaurora.org>
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org,
Sahitya Tummala <stummala@codeaurora.org>,
Vijay Viswanath <vviswana@codeaurora.org>
Subject: Re: [PATCH] mmc: sdhci-msm: Optionally wait for signal level changes
Date: Mon, 20 Nov 2017 11:25:34 -0800 [thread overview]
Message-ID: <20171120192534.GE18379@codeaurora.org> (raw)
In-Reply-To: <20171120183451.18966-1-bjorn.andersson@linaro.org>
On 11/20, Bjorn Andersson wrote:
> Not all instances of the SDCC core supports changing signal voltage and
> as such will not generate a power interrupt when the software attempts
> to change the voltage. This results in probing the eMMC on some devices
> to take over 2 minutes.
>
> Check that the SWITCHABLE_SIGNAL_VOLTAGE bit in MCI_GENERICS is set
T in SWITCHABLE_SIGNAL_VOLTAGE here.
> before waiting for the power interrupt.
>
> Cc: Sahitya Tummala <stummala@codeaurora.org>
> Cc: Vijay Viswanath <vviswana@codeaurora.org>
> Fixes: c0309b3803fe ("mmc: sdhci-msm: Add sdhci msm register write APIs which wait for pwr irq")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
>
> The offending patch is part of your v4.15 pull request, so please pick
> this up for the -rcs.
>
> drivers/mmc/host/sdhci-msm.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index 3fb7d2eec93f..8f2dda73e6b4 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -29,6 +29,9 @@
> #define CORE_VERSION_MAJOR_MASK (0xf << CORE_VERSION_MAJOR_SHIFT)
> #define CORE_VERSION_MINOR_MASK 0xff
>
> +#define CORE_MCI_GENERICS 0x70
> +#define SWICHABLE_SIGNALING_VOLTAGE BIT(29)
But then the T isn't here.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2017-11-20 19:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-20 18:34 [PATCH] mmc: sdhci-msm: Optionally wait for signal level changes Bjorn Andersson
2017-11-20 19:25 ` Stephen Boyd [this message]
2017-11-20 19:56 ` [PATCH v2] " Bjorn Andersson
2017-11-21 19:38 ` [v2] " Luca Weiss
2017-11-23 18:13 ` [PATCH v2] " 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=20171120192534.GE18379@codeaurora.org \
--to=sboyd@codeaurora.org \
--cc=adrian.hunter@intel.com \
--cc=bjorn.andersson@linaro.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=stummala@codeaurora.org \
--cc=ulf.hansson@linaro.org \
--cc=vviswana@codeaurora.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).