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<div class="moz-cite-prefix">On 4/10/19 1:24 AM, Eric Anholt wrote:<br>
</div>
<blockquote type="cite" cite="mid:87ftqrno2v.fsf@anholt.net">
<pre class="moz-quote-pre" wrap="">Hoegeun Kwon <a class="moz-txt-link-rfc2396E" href="mailto:hoegeun.kwon@samsung.com"><hoegeun.kwon@samsung.com></a> writes:
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<pre class="moz-quote-pre" wrap="">On 4/2/19 2:48 AM, Eric Anholt wrote:
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">Hoegeun Kwon <a class="moz-txt-link-rfc2396E" href="mailto:hoegeun.kwon@samsung.com"><hoegeun.kwon@samsung.com></a> writes:
</pre>
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<pre class="moz-quote-pre" wrap="">There is a problem when often dpms goes from off to on. pm idle is not
in sync and the problem occurs. Modify pm_runtime_put from
asynchronous to synchronous.
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">Why would we need the power domain to go to off before we try to come
back? Any idea? Also, please specify what "the problem" is.
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<pre class="moz-quote-pre" wrap="">
Hi Eric,
First thank you for your review.
There is a problem failed to runtime PM enable on DSI when often dpms
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<pre class="moz-quote-pre" wrap="">
What do you mean by "failed to runtime PM enable"? The
pm_runtime_enable() returned an error? Have you investigated the source
that error, if so?
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<pre>I'm sorry for the late reply.
The pm_runtime_enable() is not returned because return value is void.
The problem is that if the error log is not output
and the DPMS off on is repeated, the screen will stop.
As a result of debugging the problem, I think that synchronization
is a problem caused by dsi pm_suspend and resume.
So when we entered the pm runtime idle state, if used with sync,
the problem does not occur.
Best regards,
Hoegeun
</pre>
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