From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Praveen Talari <praveen.talari@oss.qualcomm.com>,
Mark Brown <broonie@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
bjorn.andersson@oss.qualcomm.com
Cc: linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
mukesh.savaliya@oss.qualcomm.com,
aniket.randive@oss.qualcomm.com,
chandana.chiluveru@oss.qualcomm.com,
jyothi.seerapu@oss.qualcomm.com, chiluka.harish@oss.qualcomm.com
Subject: Re: [PATCH v4 4/4] spi: qcom-geni: Enable SPI on SA8255p Qualcomm platforms
Date: Fri, 26 Jun 2026 17:29:24 +0200 [thread overview]
Message-ID: <8f45613b-7046-4a68-8023-8abb8efa697b@oss.qualcomm.com> (raw)
In-Reply-To: <20260618-enable-spi-on-sa8255p-v4-4-f5b5067e7e1e@oss.qualcomm.com>
On 6/18/26 11:06 AM, Praveen Talari wrote:
> The Qualcomm automotive SA8255p SoC relies on firmware to configure
> platform resources, including clocks, interconnects and TLMM.
> The driver requests resources operations over SCMI using power
> and performance protocols.
>
> The SCMI power protocol enables or disables resources like clocks,
> interconnect paths, and TLMM (GPIOs) using runtime PM framework APIs,
> such as resume/suspend, to control power states(on/off).
>
> The SCMI performance protocol manages SPI frequency, with each
> frequency rate represented by a performance level. The driver uses
> geni_se_set_perf_opp() API to request the desired frequency rate.
>
> As part of geni_se_set_perf_opp(), the OPP for the requested frequency
> is obtained using dev_pm_opp_find_freq_floor() and the performance
> level is set using dev_pm_opp_set_opp().
>
> Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2026-06-26 15:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-18 9:06 [PATCH v4 0/4] " Praveen Talari
2026-06-18 9:06 ` [PATCH v4 1/4] spi: dt-bindings: describe SA8255p Praveen Talari
2026-06-18 9:06 ` [PATCH v4 2/4] spi: qcom-geni: Use geni_se_resources_init() for resource initialization Praveen Talari
2026-06-18 9:06 ` [PATCH v4 3/4] spi: qcom-geni: Use resources helper APIs in runtime PM functions Praveen Talari
2026-06-18 9:06 ` [PATCH v4 4/4] spi: qcom-geni: Enable SPI on SA8255p Qualcomm platforms Praveen Talari
2026-06-26 15:29 ` Konrad Dybcio [this message]
2026-06-26 12:53 ` [PATCH v4 0/4] " Mattijs Korpershoek
2026-07-06 13:31 ` Mark Brown
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