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authorStephan Gerhold <stephan.gerhold@kernkonzept.com>2023-09-19 14:59:50 +0300
committerMark Brown <broonie@kernel.org>2023-09-25 15:19:38 +0300
commitd15befc0cef42db7712714157d9483cab81149a1 (patch)
tree087ecdc24abd528755905ccaa80db9386ffbc200
parent287fcdaa35fc666640f805310095c52f2d818d26 (diff)
downloadlinux-d15befc0cef42db7712714157d9483cab81149a1.tar.xz
spi: dt-bindings: qup: Document interconnects
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. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com> Link: https://lore.kernel.org/r/20230919-spi-qup-dvfs-v2-3-1bac2e9ab8db@kernkonzept.com Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml5
1 files changed, 5 insertions, 0 deletions
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>;
};