From: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
To: Mark Brown <broonie@kernel.org>
Cc: Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Stephan Gerhold <stephan.gerhold@kernkonzept.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: [PATCH v2 0/4] spi: qup: Allow scaling power domains and interconnect
Date: Tue, 19 Sep 2023 13:59:47 +0200 [thread overview]
Message-ID: <20230919-spi-qup-dvfs-v2-0-1bac2e9ab8db@kernkonzept.com> (raw)
Make it possible to scale performance states of the power domain and
interconnect of the SPI QUP controller in relation to the selected SPI
speed / core clock. This is done separately by:
- Parsing the OPP table from the device tree for performance state
votes of the power domain
- Voting for the necessary bandwidth on the interconnect path to DRAM
Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
---
Changes in v2:
- Vote for bandwidth only when DMA is used and not with PIO
- Add review tags from Krzysztof and Konrad
- Link to v1: https://lore.kernel.org/r/20230912-spi-qup-dvfs-v1-0-3e38aa09c2bd@kernkonzept.com
---
Stephan Gerhold (4):
spi: dt-bindings: qup: Document power-domains and OPP
spi: qup: Parse OPP table for DVFS support
spi: dt-bindings: qup: Document interconnects
spi: qup: Vote for interconnect bandwidth to DRAM
.../devicetree/bindings/spi/qcom,spi-qup.yaml | 13 ++++++
drivers/spi/spi-qup.c | 50 +++++++++++++++++++++-
2 files changed, 62 insertions(+), 1 deletion(-)
---
base-commit: baaa2957b0c6feb4ff7806b5d8e0039bd80acbdf
change-id: 20230912-spi-qup-dvfs-71fc8a5e0cb1
Best regards,
--
Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Kernkonzept GmbH at Dresden, Germany, HRB 31129, CEO Dr.-Ing. Michael Hohmuth
next reply other threads:[~2023-09-19 12:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-19 11:59 Stephan Gerhold [this message]
2023-09-19 11:59 ` [PATCH v2 1/4] spi: dt-bindings: qup: Document power-domains and OPP Stephan Gerhold
2023-09-19 11:59 ` [PATCH v2 2/4] spi: qup: Parse OPP table for DVFS support Stephan Gerhold
2023-09-19 11:59 ` [PATCH v2 3/4] spi: dt-bindings: qup: Document interconnects Stephan Gerhold
2023-09-19 11:59 ` [PATCH v2 4/4] spi: qup: Vote for interconnect bandwidth to DRAM Stephan Gerhold
2023-09-26 9:22 ` [PATCH v2 0/4] spi: qup: Allow scaling power domains and interconnect Mark Brown
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