linux-kernel - [PATCH v4 3/6] dt-bindings: remoteproc: Add common TI SCI rproc bindings

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Message-ID: <20200717234800.9423-4-s-anna@ti.com>
Date:   Fri, 17 Jul 2020 18:47:57 -0500
From:   Suman Anna <s-anna@...com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
CC:     Lokesh Vutla <lokeshvutla@...com>,
        <linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Suman Anna <s-anna@...com>
Subject: [PATCH v4 3/6] dt-bindings: remoteproc: Add common TI SCI rproc bindings

Add a bindings document that lists the common TI SCI properties
used by the K3 R5F and DSP remoteproc devices.

Signed-off-by: Suman Anna <s-anna@...com>
---
v4: Addressed both of Rob's review comments on ti,sci-proc-ids property
v3: https://patchwork.kernel.org/patch/11602317/

 .../bindings/remoteproc/ti,k3-sci-proc.yaml   | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/ti,k3-sci-proc.yaml

diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-sci-proc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-sci-proc.yaml
new file mode 100644
index 000000000000..0dca2ffdbc48
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-sci-proc.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/ti,k3-sci-proc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Common TI K3 remote processor device bindings
+
+maintainers:
+  - Suman Anna <s-anna@...com>
+
+description: |
+  The TI K3 family of SoCs usually have one or more remote processor sub-systems
+  like the dual-core R5F sub-system or a C66x or C71x DSP processor subsystem.
+  The device management of these remote processors is managed by a dedicated
+  System Processor, and the communication with that processor is managed through
+  the TI-SCI protocol.
+
+  Each remote processor device node should define a common set of properties
+  that allows the System Processor firmware to perform the device management
+  such as powering the IPs, asserting/deasserting the resets for each of these
+  processors.
+
+properties:
+  ti,sci:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Should be a phandle to the TI-SCI System Controller node
+
+  ti,sci-dev-id:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Should contain the TI-SCI device id corresponding to the remote processor
+      core. Please refer to the corresponding System Controller documentation
+      for valid values.
+
+  ti,sci-proc-ids:
+    description: Should contain a single tuple of <proc_id host_id>.
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      - description: TI-SCI processor id for the remote processor device
+      - description: TI-SCI host id to which processor control ownership
+                     should be transferred to
+
+required:
+  - ti,sci
+  - ti,sci-dev-id
+  - ti,sci-proc-ids
-- 
2.26.0