From: Akash Asthana <akashast@codeaurora.org>
To: Douglas Anderson <dianders@chromium.org>,
Mark Brown <broonie@kernel.org>, Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: swboyd@chromium.org, linux-arm-msm@vger.kernel.org,
ctheegal@codeaurora.org, mkshah@codeaurora.org, mka@chromium.org,
Rajendra Nayak <rnayak@codeaurora.org>,
georgi.djakov@linaro.org, linux-kernel@vger.kernel.org,
linux-spi@vger.kernel.org
Subject: Re: [PATCH v2 0/2] spi: spi-qcom-qspi: Avoid some per-transfer overhead
Date: Fri, 10 Jul 2020 10:15:22 +0530 [thread overview]
Message-ID: <9fcbed05-de8f-9794-6cd5-2623fd79dbb5@codeaurora.org> (raw)
In-Reply-To: <20200709145145.4055619-1-dianders@chromium.org>
On 7/9/2020 8:21 PM, Douglas Anderson wrote:
> Not to be confused with the similar series I posed for the _other_
> Qualcomm SPI controller (spi-geni-qcom) [1], this one avoids the
> overhead on the Quad SPI controller.
>
> It's based atop the current Qualcomm tree including Rajendra's ("spi:
> spi-qcom-qspi: Use OPP API to set clk/perf state"). As discussed in
> individual patches, these could ideally land through the Qualcomm tree
> with Mark's Ack.
>
> Measuring:
> * Before OPP / Interconnect patches reading all flash takes: ~3.4 seconds
> * After OPP / Interconnect patches reading all flash takes: ~4.7 seconds
> * After this patch reading all flash takes: ~3.3 seconds
>
> [1] https://lore.kernel.org/r/20200702004509.2333554-1-dianders@chromium.org
> [2] https://lore.kernel.org/r/1593769293-6354-2-git-send-email-rnayak@codeaurora.org
>
> Changes in v2:
> - Return error from runtime resume if dev_pm_opp_set_rate() fails.
>
> Douglas Anderson (2):
> spi: spi-qcom-qspi: Avoid clock setting if not needed
> spi: spi-qcom-qspi: Set an autosuspend delay of 250 ms
>
> drivers/spi/spi-qcom-qspi.c | 43 ++++++++++++++++++++++++++++---------
> 1 file changed, 33 insertions(+), 10 deletions(-)
Reviewed-by: Akash Asthana <akashast@codeaurora.org>
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,\na Linux Foundation Collaborative Project
prev parent reply other threads:[~2020-07-10 4:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-09 14:51 [PATCH v2 0/2] spi: spi-qcom-qspi: Avoid some per-transfer overhead Douglas Anderson
2020-07-09 14:51 ` [PATCH v2 1/2] spi: spi-qcom-qspi: Avoid clock setting if not needed Douglas Anderson
2020-07-09 14:51 ` [PATCH v2 2/2] spi: spi-qcom-qspi: Set an autosuspend delay of 250 ms Douglas Anderson
2020-07-10 4:45 ` Akash Asthana [this message]
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=9fcbed05-de8f-9794-6cd5-2623fd79dbb5@codeaurora.org \
--to=akashast@codeaurora.org \
--cc=agross@kernel.org \
--cc=bjorn.andersson@linaro.org \
--cc=broonie@kernel.org \
--cc=ctheegal@codeaurora.org \
--cc=dianders@chromium.org \
--cc=georgi.djakov@linaro.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-spi@vger.kernel.org \
--cc=mka@chromium.org \
--cc=mkshah@codeaurora.org \
--cc=rnayak@codeaurora.org \
--cc=swboyd@chromium.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).