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From: Rajendra Nayak <rnayak@codeaurora.org>
To: Doug Anderson <dianders@chromium.org>,
	Greg KH <gregkh@linuxfoundation.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Andy Gross <agross@kernel.org>,
	Georgi Djakov <georgi.djakov@linaro.org>,
	Akash Asthana <akashast@codeaurora.org>,
	Matthias Kaehlcke <mka@chromium.org>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-serial@vger.kernel.org, Stephen Boyd <swboyd@chromium.org>
Subject: Re: [PATCH] tty: serial: qcom-geni-serial: Drop the icc bw votes in suspend for console
Date: Tue, 14 Jul 2020 11:04:02 +0530	[thread overview]
Message-ID: <18c235bc-03ce-e2f4-6d95-edff0fdf3edb@codeaurora.org> (raw)
In-Reply-To: <CAD=FV=XJQaAHsDb6uvKpwU87qtqTQgNeoiuRr2kF9pqjBLhLpg@mail.gmail.com>


On 7/14/2020 6:23 AM, Doug Anderson wrote:
> Rajendra,
> 
> On Fri, Jul 10, 2020 at 5:41 AM Greg KH <gregkh@linuxfoundation.org> wrote:
>>
>> On Thu, Jul 09, 2020 at 03:07:00PM +0530, Rajendra Nayak wrote:
>>> When using the geni-serial as console, its important to be
>>> able to hit the lowest possible power state in suspend,
>>> even with no_console_suspend.
>>> The only thing that prevents it today on platforms like the sc7180
>>> is the interconnect BW votes, which we certainly don't need when
>>> the system is in suspend. So in the suspend handler mark them as
>>> ACTIVE_ONLY (0x3) and on resume switch them back to the ALWAYS tag (0x7)
>>>
>>> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
>>> ---
>>> Note: Patch applies on qcom for-next, which has the ICC support patches.
>>> The tag macros are currently not exported and hence the hardcoded values.
>>> Perhaps if and when https://patchwork.kernel.org/patch/11619705/ lands I
>>> can refresh this patch to use the macros.
>>
>> Feel free to take this patch through that tree.
>>
>> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> 
> Could you post a v2?  Bjorn landed some of my geni serial patches to
> make console / kgdb work better, but then I realized that your patch
> no longer applies cleanly.  It's trivial to resolve, so hopefully a v2
> should be quick and then Bjorn can land?

Thanks, just rebased and posted the v2.

-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation

      reply	other threads:[~2020-07-14  5:34 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-09  9:37 [PATCH] tty: serial: qcom-geni-serial: Drop the icc bw votes in suspend for console Rajendra Nayak
2020-07-09 14:21 ` Akash Asthana
2020-07-09 15:26 ` Matthias Kaehlcke
2020-07-10 12:41 ` Greg KH
2020-07-14  0:53   ` Doug Anderson
2020-07-14  5:34     ` Rajendra Nayak [this message]

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