From: "Balaji Pothunoori (QUIC)" <quic_bpothuno@quicinc.com>
To: "dmitry.baryshkov@linaro.org" <dmitry.baryshkov@linaro.org>,
"Balaji Pothunoori (QUIC)" <quic_bpothuno@quicinc.com>
Cc: "andersson@kernel.org" <andersson@kernel.org>,
"mathieu.poirier@linaro.org" <mathieu.poirier@linaro.org>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"ath11k@lists.infradead.org" <ath11k@lists.infradead.org>,
Kalle Valo <kvalo@kernel.org>
Subject: RE: [PATCH] remoteproc: qcom_q6v5_pas: disable auto boot for wpss
Date: Fri, 18 Oct 2024 08:41:59 +0000 [thread overview]
Message-ID: <LV8PR02MB102398337D13C6E0160E0FD14E7402@LV8PR02MB10239.namprd02.prod.outlook.com> (raw)
In-Reply-To: <mvzwlbeopenn5hpll3rmkdwcc7r7ir263nwvlh2hiy73qeipl6@nh4angyrt5p2>
> -----Original Message-----
> From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Sent: Friday, October 18, 2024 3:59 AM
> To: Balaji Pothunoori (QUIC) <quic_bpothuno@quicinc.com>
> Cc: andersson@kernel.org; mathieu.poirier@linaro.org; linux-arm-
> msm@vger.kernel.org; linux-remoteproc@vger.kernel.org; linux-
> kernel@vger.kernel.org; ath11k@lists.infradead.org; Kalle Valo
> <kvalo@kernel.org>
> Subject: Re: [PATCH] remoteproc: qcom_q6v5_pas: disable auto boot for wpss
>
> On Wed, Oct 16, 2024 at 07:24:09PM +0530, Balaji Pothunoori wrote:
> > auto_boot flag ensures to take the firmware and boots it up during the
> > wpss remoteproc start.
> > wpss host driver would like to control the load and unload of the
> > firmware during the load and unload of the driver.
> > Hence, disable the "auto boot" for wpss.
>
> Which driver?
ath11k_ahb.ko
What is the reason for manual control?
> The board seems to function properly with the ath11k driver, which doesn't
> seem to require manual control.
>
The rproc "atomic_t power" variable is incremented during:
a. WPSS rproc auto boot.
b. AHB power on for ath11k.
During AHB power off (rmmod ath11k_ahb.ko), rproc_shutdown fails to unload the WPSS firmware because the rproc->power value is '2', causing the atomic_dec_and_test(&rproc->power) condition to fail.
Consequently, during AHB power on (insmod ath11k_ahb.ko), QMI_WLANFW_HOST_CAP_REQ_V01 fails due to the host and firmware QMI states being out of sync.
Therefore, this change disables rproc auto boot for WPSS.
> >
> > Signed-off-by: Balaji Pothunoori <quic_bpothuno@quicinc.com>
> > ---
> > Cc: ath11k@lists.infradead.org
> > Cc: Kalle Valo <kvalo@kernel.org>
> > ---
> > drivers/remoteproc/qcom_q6v5_pas.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/remoteproc/qcom_q6v5_pas.c
> > b/drivers/remoteproc/qcom_q6v5_pas.c
> > index ef82835e98a4..05963d7924df 100644
> > --- a/drivers/remoteproc/qcom_q6v5_pas.c
> > +++ b/drivers/remoteproc/qcom_q6v5_pas.c
> > @@ -1344,7 +1344,7 @@ static const struct adsp_data
> sc7280_wpss_resource = {
> > .crash_reason_smem = 626,
> > .firmware_name = "wpss.mdt",
> > .pas_id = 6,
> > - .auto_boot = true,
> > + .auto_boot = false,
> > .proxy_pd_names = (char*[]){
> > "cx",
> > "mx",
> > --
> > 2.34.1
> >
>
> --
> With best wishes
> Dmitry
Regards,
Balaji.
next prev parent reply other threads:[~2024-10-18 8:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-16 13:54 [PATCH] remoteproc: qcom_q6v5_pas: disable auto boot for wpss Balaji Pothunoori
2024-10-17 22:29 ` Dmitry Baryshkov
2024-10-18 8:41 ` Balaji Pothunoori (QUIC) [this message]
2024-10-18 9:03 ` Dmitry Baryshkov
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