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@xxxxxxxxxxxxxxx>
---
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@xxxxxxxxxxxxxxx
---
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@xxxxxxxxxxxxxxx>
Kernkonzept GmbH at Dresden, Germany, HRB 31129, CEO Dr.-Ing. Michael Hohmuth
