linux-kernel - Re: [PATCH v9 1/8] remoteproc: qcom: Add PRNG proxy clock

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Date: Wed, 26 Jun 2024 22:17:15 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Gokul Sriram P <quic_gokulsri@...cinc.com>
Cc: sboyd@...nel.org, andersson@...nel.org, bjorn.andersson@...aro.org, 
	david.brown@...aro.org, devicetree@...r.kernel.org, jassisinghbrar@...il.com, 
	linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-remoteproc@...r.kernel.org, mark.rutland@....com, mturquette@...libre.com, ohad@...ery.com, 
	robh@...nel.org, sricharan@...eaurora.org, gokulsri@...eaurora.org
Subject: Re: [PATCH v9 1/8] remoteproc: qcom: Add PRNG proxy clock

On Tue, Jun 25, 2024 at 11:03:30AM GMT, Gokul Sriram P wrote:
> 
> On 6/22/2024 2:38 AM, Dmitry Baryshkov wrote:
> > On Fri, Jun 21, 2024 at 05:16:52PM GMT, Gokul Sriram Palanisamy wrote:
> > > PRNG clock is needed by the secure PIL, support for the same
> > > is added in subsequent patches.
> > Which 'same'?
> > What is 'secure PIL'?
>   will elaborate in the updated version.
>   To answer your question, secure PIL is signed PIL image which only
> TrustZone can authenticate and load.

Fine. So, the current driver can not load WCSS firmware on IPQ8074, is
that correct? Or was there some kind of firmware interface change? The
driver was added in 2018, so I can only hope that at that point it
worked. Could you please explain, what happened?

> > > Signed-off-by: Nikhil Prakash V <quic_nprakash@...cinc.com>
> > > Signed-off-by: Sricharan R <quic_srichara@...cinc.com>
> > > Signed-off-by: Gokul Sriram Palanisamy <quic_gokulsri@...cinc.com>
> > > ---
> > >   drivers/remoteproc/qcom_q6v5_wcss.c | 65 +++++++++++++++++++++--------
> > >   1 file changed, 47 insertions(+), 18 deletions(-)


-- 
With best wishes
Dmitry