linux-kernel - Re: [PATCH RESEND 7/7] arm64: dts: qcom: include the GPLL0 as clock provider for IPQ mailbox

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Date:   Wed, 6 Sep 2023 11:33:58 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Sricharan Ramabadhran <quic_srichara@...cinc.com>,
        Anusha Rao <quic_anusha@...cinc.com>,
        Devi Priya <quic_devipriy@...cinc.com>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH RESEND 7/7] arm64: dts: qcom: include the GPLL0 as clock
 provider for IPQ mailbox

On 6.09.2023 06:56, Kathiravan Thirumoorthy wrote:
> While the kernel is booting up, APSS PLL will be running at 800MHz with
> GPLL0 as source. Once the cpufreq driver is available, APSS PLL will be
> configured to the rate based on the opp table and the source also will be
> changed to APSS_PLL_EARLY.
> 
> Also, dynamic scaling of CPUFreq is not supported on IPQ5332, so to switch
> between the frequencies we need to park the APSS PLL in safe source,
> here it is GPLL0 and then shutdown and bring up the APSS PLL in the
> desired rate. So this patch is preparatory one to enable the CPUFreq on
> IPQ5332.
> 
> Signed-off-by: Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>
> ---
Please split this. Somebody reverting this in the future will have
a hard time resolving conflicts.

Konrad