linux-kernel - Re: [RFC] dt-bindings: mailbox: add doorbell support to ARM MHU

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Message-ID: <20200604082814.GA8814@bogus>
Date:   Thu, 4 Jun 2020 09:28:14 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Rob Herring <robh@...nel.org>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        Frank Rowand <frowand.list@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC] dt-bindings: mailbox: add doorbell support to ARM MHU

On Thu, Jun 04, 2020 at 11:29:03AM +0530, Viresh Kumar wrote:
> On 03-06-20, 19:17, Sudeep Holla wrote:
> > I just realised that we have the timing info in the traces and you will
> > observe the sensor readings take something in order of 100us to 500-600us
> > or even more based on which sensor is being read. While we have 100us
> > timeout for cpufreq opp set.
>
> Which timeout from opp core are you talking about ?

The one we have in SCMI itself to meet the fast_switch requirement.

--
Regards,
Sudeep