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Date:   Tue, 11 Aug 2020 16:11:46 -0700
From:   John Stultz <>
To:     Rajendra Nayak <>
Cc:     lkml <>,
        Ulf Hansson <>,,
        Linux PM list <>,
        linux-arm-msm <>,
        "Rafael J. Wysocki" <>,
        Doug Anderson <>,
        dri-devel <>,,,
        Viresh Kumar <>,
        Stephen Boyd <>,
        Amit Pundir <>,
        Bjorn Andersson <>
Subject: Re: [RFC v2 03/11] tty: serial: qcom_geni_serial: Use OPP API to set
 clk/perf state

On Wed, Mar 20, 2019 at 2:49 AM Rajendra Nayak <> wrote:
> geni serial needs to express a perforamnce state requirement on CX
> depending on the frequency of the clock rates. Use OPP table from
> DT to register with OPP framework and use dev_pm_opp_set_rate() to
> set the clk/perf state.
> Signed-off-by: Rajendra Nayak <>
> Signed-off-by: Stephen Boyd <>
> ---
>  drivers/tty/serial/qcom_geni_serial.c | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)

  I just wanted to follow up on this patch, as I've bisected it
(a5819b548af0) down as having broken qca bluetooth on the Dragonboard

I haven't yet had time to debug it yet, but wanted to raise the issue
in case anyone else has seen similar trouble.


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