linux-kernel - Re: [PATCH v2 01/11] clk: qcom: ipq8074: drop the CLK_SET_RATE

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Date:   Wed, 18 Oct 2023 17:16:38 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Andy Gross <agross@...nel.org>,
        Anusha Rao <quic_anusha@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Devi Priya <quic_devipriy@...cinc.com>,
        Gokul Sriram Palanisamy <quic_gokulsri@...cinc.com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Sricharan Ramabadhran <quic_srichara@...cinc.com>,
        Varadarajan Narayanan <quic_varada@...cinc.com>
Cc:     linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH v2 01/11] clk: qcom: ipq8074: drop the CLK_SET_RATE_PARENT flag from PLL clocks

Quoting Konrad Dybcio (2023-09-15 05:19:56)
> On 14.09.2023 08:59, Kathiravan Thirumoorthy wrote:
> > GPLL, NSS crypto PLL clock rates are fixed and shouldn't be scaled based
> > on the request from dependent clocks. Doing so will result in the
> > unexpected behaviour. So drop the CLK_SET_RATE_PARENT flag from the PLL
> > clocks.
> > 
> > Cc: stable@...r.kernel.org
> > Fixes: b8e7e519625f ("clk: qcom: ipq8074: add remaining PLL’s")
> > Signed-off-by: Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>
> > ---
> Stephen, do you think there should be some sort of error
> or at least warning thrown when SET_RATE_PARENT is used with
> RO ops?
> 

Sure? How would that be implemented?