linux-kernel - [PATCH v2 2/4] dt-bindings: remoteproc: stm32_rproc: update for firmware synchronization

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Message-ID: <20201014125441.2457-3-arnaud.pouliquen@st.com>
Date:   Wed, 14 Oct 2020 14:54:39 +0200
From:   Arnaud Pouliquen <arnaud.pouliquen@...com>
To:     Rob Herring <robh@...nel.org>,
        Alexandre Torgue <alexandre.torgue@...com>
CC:     <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Arnaud Pouliquen <arnaud.pouliquen@...com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ahmad Fatoum <a.fatoum@...gutronix.de>
Subject: [PATCH v2 2/4] dt-bindings: remoteproc: stm32_rproc: update for firmware synchronization

Add new properties description used to attach to a pre-loaded
firmware according to the commit 9276536f455b3
("remoteproc: stm32: Parse syscon that will manage M4 synchronisation")
which updates the driver part.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...com>
---
 .../bindings/remoteproc/st,stm32-rproc.yaml       | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
index 4ffa25268fcc..3207942d51bf 100644
--- a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
@@ -96,6 +96,19 @@ properties:
         3rd cell: register bitmask for the deep sleep bit
     maxItems: 1
 
+  st,syscfg-m4-state:
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    description: |
+      Reference to the tamp register which exposes the Cortex-M4 state.
+    maxItems: 1
+
+  st,syscfg-rsc-tbl:
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    description: |
+      Reference to the tamp register which references the Cortex-M4
+      resource table address.
+    maxItems: 1
+
   st,auto-boot:
     $ref: /schemas/types.yaml#/definitions/flag
     description:
@@ -122,6 +135,8 @@ examples:
       resets = <&rcc MCU_R>;
       st,syscfg-holdboot = <&rcc 0x10C 0x1>;
       st,syscfg-tz = <&rcc 0x000 0x1>;
+      st,syscfg-rsc-tbl = <&tamp 0x144 0xFFFFFFFF>;
+      st,syscfg-m4-state = <&tamp 0x148 0xFFFFFFFF>;
     };
 
 ...
-- 
2.17.1