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From: Sibi Sankar <sibis@codeaurora.org>
To: mka@chromium.org, swboyd@chromium.org,
	bjorn.andersson@linaro.org, robh+dt@kernel.org
Cc: ulf.hansson@linaro.org, rjw@rjwysocki.net, agross@kernel.org,
	ohad@wizery.com, mathieu.poirier@linaro.org,
	linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	dianders@chromium.org, rishabhb@codeaurora.org,
	sidgup@codeaurora.org, Sibi Sankar <sibis@codeaurora.org>
Subject: [PATCH v6 02/13] dt-bindings: remoteproc: qcom: pas: Add QMP property
Date: Mon,  6 Sep 2021 13:53:46 +0530	[thread overview]
Message-ID: <1630916637-4278-3-git-send-email-sibis@codeaurora.org> (raw)
In-Reply-To: <1630916637-4278-1-git-send-email-sibis@codeaurora.org>

The load state power-domain, used by the co-processors to notify the
Always on Subsystem (AOSS) that a particular co-processor is up/down,
suffers from the side-effect of changing states during suspend/resume.
However the co-processors enter low-power modes independent to that of
the application processor and their states are expected to remain
unaltered across system suspend/resume cycles. To achieve this behavior
let's drop the load state power-domain and replace them with the qmp
property for all SoCs supporting low power mode signalling.

Due to the current broken load state implementation, we can afford the
binding breakage that ensues and the remoteproc functionality will remain
the same when using newer kernels with older dtbs.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
---

v6:
 * Updated commit message to explain binding breakage. [Stephen]

 .../devicetree/bindings/remoteproc/qcom,adsp.yaml  | 61 +++++++++++-----------
 1 file changed, 31 insertions(+), 30 deletions(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml
index 0c112f3264a9..0d2b5bd4907a 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml
@@ -93,6 +93,10 @@ properties:
     maxItems: 1
     description: Reference to the reserved-memory for the Hexagon core
 
+  qcom,qmp:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Reference to the AOSS side-channel message RAM.
+
   qcom,smem-states:
     $ref: /schemas/types.yaml#/definitions/phandle-array
     description: States used by the AP to signal the Hexagon core
@@ -369,13 +373,11 @@ allOf:
       properties:
         power-domains:
           items:
-            - description: Load State power domain
             - description: CX power domain
             - description: MX power domain
             - description: MSS power domain
         power-domain-names:
           items:
-            - const: load_state
             - const: cx
             - const: mx
             - const: mss
@@ -391,43 +393,20 @@ allOf:
       properties:
         power-domains:
           items:
-            - description: Load State power domain
             - description: CX power domain
-        power-domain-names:
-          items:
-            - const: load_state
-            - const: cx
 
   - if:
       properties:
         compatible:
           contains:
             enum:
+              - qcom,sdx55-mpss-pas
               - qcom,sm8150-mpss-pas
               - qcom,sm8350-mpss-pas
     then:
       properties:
         power-domains:
           items:
-            - description: Load State power domain
-            - description: CX power domain
-            - description: MSS power domain
-        power-domain-names:
-          items:
-            - const: load_state
-            - const: cx
-            - const: mss
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            enum:
-              - qcom,sdx55-mpss-pas
-    then:
-      properties:
-        power-domains:
-          items:
             - description: CX power domain
             - description: MSS power domain
         power-domain-names:
@@ -451,12 +430,10 @@ allOf:
       properties:
         power-domains:
           items:
-            - description: Load State power domain
             - description: LCX power domain
             - description: LMX power domain
         power-domain-names:
           items:
-            - const: load_state
             - const: lcx
             - const: lmx
 
@@ -470,12 +447,10 @@ allOf:
       properties:
         power-domains:
           items:
-            - description: Load State power domain
             - description: CX power domain
             - description: MXC power domain
         power-domain-names:
           items:
-            - const: load_state
             - const: cx
             - const: mxc
 
@@ -511,6 +486,32 @@ allOf:
             - const: mss_restart
             - const: pdc_reset
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,sc7180-mpss-pas
+              - qcom,sc8180x-adsp-pas
+              - qcom,sc8180x-cdsp-pas
+              - qcom,sc8180x-mpss-pas
+              - qcom,sm8150-adsp-pas
+              - qcom,sm8150-cdsp-pas
+              - qcom,sm8150-mpss-pas
+              - qcom,sm8150-slpi-pas
+              - qcom,sm8250-adsp-pas
+              - qcom,sm8250-cdsp-pas
+              - qcom,sm8250-slpi-pas
+              - qcom,sm8350-adsp-pas
+              - qcom,sm8350-cdsp-pas
+              - qcom,sm8350-mpss-pas
+              - qcom,sm8350-slpi-pas
+    then:
+      properties:
+        qcom,qmp:
+          items:
+            - description: Reference to the AOSS side-channel message RAM.
+
 examples:
   - |
     #include <dt-bindings/clock/qcom,rpmcc.h>
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


  parent reply	other threads:[~2021-09-06  8:24 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-06  8:23 [PATCH v6 00/13] Use qmp_send to update co-processor load state Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 01/13] dt-bindings: soc: qcom: aoss: Drop the load state power-domain Sibi Sankar
2021-09-06  8:23 ` Sibi Sankar [this message]
2021-09-08 13:51   ` [PATCH v6 02/13] dt-bindings: remoteproc: qcom: pas: Add QMP property Rob Herring
2021-09-16  3:13     ` Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 03/13] dt-bindings: remoteproc: qcom: " Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 04/13] remoteproc: qcom: q6v5: Use qmp_send to update co-processor load state Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 05/13] arm64: dts: qcom: sc7180: Use QMP property to control " Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 06/13] arm64: dts: qcom: sc7280: " Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 07/13] arm64: dts: qcom: sdm845: " Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 08/13] arm64: dts: qcom: sm8150: " Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 09/13] arm64: dts: qcom: sm8250: " Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 10/13] arm64: dts: qcom: sm8350: " Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 11/13] soc: qcom: aoss: Drop power domain support Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 12/13] dt-bindings: msm/dp: Remove aoss-qmp header Sibi Sankar
2021-09-06  8:23 ` [PATCH v6 13/13] dt-bindings: soc: qcom: aoss: Delete unused power-domain definitions Sibi Sankar

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