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[v2,0/4] spi: qup: Allow scaling power domains and interconnect

Message ID 20230919-spi-qup-dvfs-v2-0-1bac2e9ab8db@kernkonzept.com
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Series spi: qup: Allow scaling power domains and interconnect | expand

Message

Stephan Gerhold Sept. 19, 2023, 11:59 a.m. UTC
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,

Comments

Mark Brown Sept. 26, 2023, 9:22 a.m. UTC | #1
On Tue, 19 Sep 2023 13:59:47 +0200, Stephan Gerhold wrote:
> 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
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/4] spi: dt-bindings: qup: Document power-domains and OPP
      commit: e6419c35f0d92632e06708c5610a31957f1bd6b3
[2/4] spi: qup: Parse OPP table for DVFS support
      commit: 287fcdaa35fc666640f805310095c52f2d818d26
[3/4] spi: dt-bindings: qup: Document interconnects
      commit: d15befc0cef42db7712714157d9483cab81149a1
[4/4] spi: qup: Vote for interconnect bandwidth to DRAM
      commit: ecdaa9473019f94e0ad6974a5f69b9be7de137d3

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark