This series enables CPUFreq support on the X1E SoC using the SCMI perf
protocol. This was originally part of the RFC: firmware: arm_scmi:
Qualcomm Vendor Protocol [1]. I've split it up so that this part can
land earlier.

RFC:
* Use x1e80100 as the fallback for future SoCs using the cpucp-mbox
  controller. [Krzysztoff/Konrad/Rob]
* Use chan->lock and chan->cl to detect if the channel is no longer
  Available. [Dmitry]
* Use BIT() instead of using manual shifts. [Dmitry]
* Don't use integer as a pointer value. [Dmitry]
* Allow it to default to of_mbox_index_xlate. [Dmitry]
* Use devm_of_iomap. [Dmitry]
* Use module_platform_driver instead of module init/exit. [Dmitry]
* Get channel number using mailbox core (like other drivers) and
  further simplify the driver by dropping setup_mbox func.

[1]: https://lore.kernel.org/lkml/20240117173458.2312669-1-quic_sibis@quicinc.com/#r

Other relevant Links:
https://lore.kernel.org/lkml/be2e475a-349f-4e98-b238-262dd7117a4e@linaro.org/

Sibi Sankar (5):
  dt-bindings: mailbox: qcom: Add CPUCP mailbox controller bindings
  mailbox: Add support for QTI CPUCP mailbox controller
  arm64: dts: qcom: x1e80100: Resize GIC Redistributor register region
  arm64: dts: qcom: x1e80100: Add cpucp mailbox and sram nodes
  arm64: dts: qcom: x1e80100: Enable cpufreq

 .../bindings/mailbox/qcom,cpucp-mbox.yaml     |  49 +++++
 arch/arm64/boot/dts/qcom/x1e80100.dtsi        |  55 ++++-
 drivers/mailbox/Kconfig                       |   8 +
 drivers/mailbox/Makefile                      |   2 +
 drivers/mailbox/qcom-cpucp-mbox.c             | 205 ++++++++++++++++++
 5 files changed, 318 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
 create mode 100644 drivers/mailbox/qcom-cpucp-mbox.c

-- 
2.34.1