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From:   Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Date:   Tue, 12 Sep 2023 16:30:36 +0200
Subject: [PATCH 1/4] spi: dt-bindings: qup: Document power-domains and OPP
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Message-Id: <20230912-spi-qup-dvfs-v1-1-3e38aa09c2bd@kernkonzept.com>
References: <20230912-spi-qup-dvfs-v1-0-3e38aa09c2bd@kernkonzept.com>
In-Reply-To: <20230912-spi-qup-dvfs-v1-0-3e38aa09c2bd@kernkonzept.com>
To:     Mark Brown <broonie@kernel.org>
Cc:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Precedence: bulk

Document power-domains and operating-points-v2 to allow making
performance state votes for certain clock frequencies of the SPI QUP
controller.

Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
---
 Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml b/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml
index 93f14dd01afc..1e498a791406 100644
--- a/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml
+++ b/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml
@@ -47,6 +47,11 @@ properties:
   interrupts:
     maxItems: 1
 
+  operating-points-v2: true
+
+  power-domains:
+    maxItems: 1
+
   reg:
     maxItems: 1
 
@@ -63,6 +68,7 @@ examples:
   - |
     #include <dt-bindings/clock/qcom,gcc-msm8996.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
 
     spi@7575000 {
         compatible = "qcom,spi-qup-v2.2.1";
@@ -76,6 +82,8 @@ examples:
         pinctrl-1 = <&blsp1_spi1_sleep>;
         dmas = <&blsp1_dma 12>, <&blsp1_dma 13>;
         dma-names = "tx", "rx";
+        power-domains = <&rpmpd MSM8996_VDDCX>;
+        operating-points-v2 = <&spi_opp_table>;
         #address-cells = <1>;
         #size-cells = <0>;
     };

-- 
2.39.2