Certain platforms (such as Chrome SDM845 and SC7180 with a TF-A running
as secure firmware) do not have a OSI-mode capable PSCI implementation.
That in turn means the PSCI-associated power domain which represents the
system's power state can't provide enough feedback to the RSC device.
Don't require power-domains on platforms where this may be the case.
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250327-topic-more_dt_bindings_fixes-v2-1-b763d958545f@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
The Linux RPMh implementation refrains from sending some RPMh votes until
the system is about to enter suspend (which is indicated by all CPU cores
entering a low-power state). Lack of the power-domains property will make
it such that these votes are never sent.
Require the power-domains property as discussed in [1].
[1] https://lore.kernel.org/linux-arm-msm/20230512150425.3171122-1-quic_bjorande@quicinc.com/
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230531-topic-rsc-v1-1-b4a985f57b8b@linaro.org
The schema for "qcom,tcs-config" property can be a little bit simpler,
without the need of defining each item. Also move the description of
each part of "qcom,tcs-config" tupple to the tupple items description.
Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220426110757.80603-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Convert the Qualcomm RPMH RSC bindings to DT Schema.
Changes against original bindings:
1. Add qcom,tcs-offset as a property instead of one of reg (not used
that way).
2. Add limits to interrupts.
3. Add child nodes (bcm-voter, clock-controller, power-controller).
4. Extend the example with more complex one.
The device description and DTS examples were copied from existing
sources, so keep the license as GPL-2.0-only.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220411085935.130072-4-krzysztof.kozlowski@linaro.org
