linux-kernel - [PATCH 1/4] dt-bindings: remoteproc: qcom,adsp: Make msm8974 use CX as power domain

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Message-Id: <20250621-msm8974-rpmpd-switch-v1-1-0a2cb303c446@lucaweiss.eu>
Date: Sat, 21 Jun 2025 15:19:56 +0200
From: Luca Weiss <luca@...aweiss.eu>
To: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 Bjorn Andersson <andersson@...nel.org>, 
 Mathieu Poirier <mathieu.poirier@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Manivannan Sadhasivam <mani@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Luca Weiss <luca@...aweiss.eu>
Subject: [PATCH 1/4] dt-bindings: remoteproc: qcom,adsp: Make msm8974 use
 CX as power domain

Using CX as a regulator is an artifact of earlier times. Instead use CX
power rail as power domain from rpmpd.

Signed-off-by: Luca Weiss <luca@...aweiss.eu>
---
 .../devicetree/bindings/remoteproc/qcom,adsp.yaml      | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml
index 661c2b425da35c3756965fd1c47a485fe15a3f83..03e28d77da50912fe0e3106aef26cb93eb2d4142 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml
@@ -31,9 +31,6 @@ properties:
   reg:
     maxItems: 1
 
-  cx-supply:
-    description: Phandle to the CX regulator
-
   px-supply:
     description: Phandle to the PX regulator
 
@@ -103,16 +100,6 @@ allOf:
         interrupt-names:
           maxItems: 5
 
-  - if:
-      properties:
-        compatible:
-          contains:
-            enum:
-              - qcom,msm8974-adsp-pil
-    then:
-      required:
-        - cx-supply
-
   - if:
       properties:
         compatible:
@@ -120,6 +107,7 @@ allOf:
             enum:
               - qcom,msm8226-adsp-pil
               - qcom,msm8953-adsp-pil
+              - qcom,msm8974-adsp-pil
               - qcom,msm8996-adsp-pil
               - qcom,msm8998-adsp-pas
     then:
@@ -187,6 +175,7 @@ examples:
     #include <dt-bindings/clock/qcom,rpmcc.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
     adsp {
         compatible = "qcom,msm8974-adsp-pil";
 
@@ -204,7 +193,8 @@ examples:
         clocks = <&rpmcc RPM_CXO_CLK>;
         clock-names = "xo";
 
-        cx-supply = <&pm8841_s2>;
+        power-domains = <&rpmpd MSM8974_VDDCX>;
+        power-domain-names = "cx";
 
         memory-region = <&adsp_region>;
 

-- 
2.50.0