| Message ID | 20230912-spi-qup-dvfs-v1-3-3e38aa09c2bd@kernkonzept.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | spi: qup: Allow scaling power domains and interconnect | expand |
On 12/09/2023 16:30, Stephan Gerhold wrote: > When the SPI QUP controller is used together with a DMA engine it needs > to vote for the interconnect path to the DRAM. Otherwise it may be > unable to access the memory quickly enough. > > Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com> > --- > Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml | 5 +++++ > 1 file changed, 5 insertions(+) Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml b/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml index 1e498a791406..88be13268962 100644 --- a/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml +++ b/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml @@ -44,6 +44,9 @@ properties: - const: tx - const: rx + interconnects: + maxItems: 1 + interrupts: maxItems: 1 @@ -67,6 +70,7 @@ unevaluatedProperties: false examples: - | #include <dt-bindings/clock/qcom,gcc-msm8996.h> + #include <dt-bindings/interconnect/qcom,msm8996.h> #include <dt-bindings/interrupt-controller/arm-gic.h> #include <dt-bindings/power/qcom-rpmpd.h> @@ -84,6 +88,7 @@ examples: dma-names = "tx", "rx"; power-domains = <&rpmpd MSM8996_VDDCX>; operating-points-v2 = <&spi_opp_table>; + interconnects = <&pnoc MASTER_BLSP_1 &bimc SLAVE_EBI_CH0>; #address-cells = <1>; #size-cells = <0>; };
When the SPI QUP controller is used together with a DMA engine it needs to vote for the interconnect path to the DRAM. Otherwise it may be unable to access the memory quickly enough. Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com> --- Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml | 5 +++++ 1 file changed, 5 insertions(+)