linux-kernel - Re: [PATCH 2/4] spi: qup: Parse OPP table for DVFS support

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Message-ID: <e07ae46a-2274-41d2-a079-029e1619e2b5@linaro.org>
Date:   Wed, 13 Sep 2023 10:54:14 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Stephan Gerhold <stephan.gerhold@...nkonzept.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-spi@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] spi: qup: Parse OPP table for DVFS support

On 12.09.2023 16:30, Stephan Gerhold wrote:
> Parse the OPP table from the device tree and use dev_pm_opp_set_rate()
> instead of clk_set_rate() to allow making performance state for power
> domains specified in the OPP table.
> 
> This is needed to guarantee correct behavior of the clock, especially
> with the higher clock/SPI bus frequencies.
> 
> Signed-off-by: Stephan Gerhold <stephan.gerhold@...nkonzept.com>
> ---
Acked-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad