| Message ID | 20230825112633.236607-10-ulf.hansson@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | viresh kumar |
| Headers | show |
| Series | arm_scmi/cpufreq: Add generic performance scaling support | expand |
On Fri, 25 Aug 2023 13:26:29 +0200, Ulf Hansson wrote: > The protocol@13 node is describing the performance scaling option for the > ARM SCMI interface, as a clock provider. This is unnecessary limiting, as > performance scaling is in many cases not limited to switching a clock's > frequency. > > Therefore, let's extend the binding so the interface can be modelled as a > generic performance domain too. The common way to describe this, is to use > the power-domain DT bindings, so let's use that. > > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> > Cc: Conor Dooley <conor+dt@kernel.org> > Cc: devicetree@vger.kernel.org > Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> > --- > > Changes in v3: > - None. > > --- > .../devicetree/bindings/firmware/arm,scmi.yaml | 11 +++++++++-- > 1 file changed, 9 insertions(+), 2 deletions(-) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml index b138f3d23df8..563a87dfb31a 100644 --- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml +++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml @@ -149,8 +149,15 @@ properties: '#clock-cells': const: 1 - required: - - '#clock-cells' + '#power-domain-cells': + const: 1 + + oneOf: + - required: + - '#clock-cells' + + - required: + - '#power-domain-cells' protocol@14: $ref: '#/$defs/protocol-node'
The protocol@13 node is describing the performance scaling option for the ARM SCMI interface, as a clock provider. This is unnecessary limiting, as performance scaling is in many cases not limited to switching a clock's frequency. Therefore, let's extend the binding so the interface can be modelled as a generic performance domain too. The common way to describe this, is to use the power-domain DT bindings, so let's use that. Cc: Rob Herring <robh+dt@kernel.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> Cc: Conor Dooley <conor+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- Changes in v3: - None. --- .../devicetree/bindings/firmware/arm,scmi.yaml | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)