linux-kernel - [PATCH 3/3] dt-bindings: remoteproc: Add Arm remoteproc

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Message-Id: <20240301164227.339208-4-abdellatif.elkhlifi@arm.com>
Date: Fri,  1 Mar 2024 16:42:27 +0000
From: abdellatif.elkhlifi@....com
To: Bjorn Andersson <andersson@...nel.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	Rob Herring <robh+dt@...nel.org>
Cc: Liviu Dudau <liviu.dudau@....com>,
	Sudeep Holla <sudeep.holla@....com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Drew.Reed@....com,
	Adam.Johnston@....com,
	Abdellatif El Khlifi <abdellatif.elkhlifi@....com>,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-remoteproc@...r.kernel.org
Subject: [PATCH 3/3] dt-bindings: remoteproc: Add Arm remoteproc

From: Abdellatif El Khlifi <abdellatif.elkhlifi@....com>

introduce the bindings for Arm remoteproc support.

Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@....com>
---
 .../bindings/remoteproc/arm,rproc.yaml        | 69 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 70 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/arm,rproc.yaml

diff --git a/Documentation/devicetree/bindings/remoteproc/arm,rproc.yaml b/Documentation/devicetree/bindings/remoteproc/arm,rproc.yaml
new file mode 100644
index 000000000000..322197158059
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/arm,rproc.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/arm,rproc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Arm Remoteproc Devices
+
+maintainers:
+  - Abdellatif El Khlifi <abdellatif.elkhlifi@....com>
+
+description: |
+  Some Arm heterogeneous System-On-Chips feature remote processors that can
+  be controlled with a reset control register and a reset status register to
+  start or stop the processor.
+
+  This document defines the bindings for these remote processors.
+
+properties:
+  compatible:
+    enum:
+      - arm,corstone1000-extsys
+
+  reg:
+    minItems: 2
+    maxItems: 2
+    description: |
+      Address and size in bytes of the reset control register
+      and the reset status register.
+      Expects the registers to be in the order as above.
+      Should contain an entry for each value in 'reg-names'.
+
+  reg-names:
+    description: |
+      Required names for each of the reset registers defined in
+      the 'reg' property. Expects the names from the following
+      list, in the specified order, each representing the corresponding
+      reset register.
+    items:
+      - const: reset-control
+      - const: reset-status
+
+  firmware-name:
+    description: |
+      Default name of the firmware to load to the remote processor.
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - firmware-name
+
+additionalProperties: false
+
+examples:
+  - |
+    extsys0: remoteproc@...10310 {
+            compatible = "arm,corstone1000-extsys";
+            reg = <0x1a010310 0x4>, <0x1a010314 0x4>;
+            reg-names = "reset-control", "reset-status";
+            firmware-name = "es0_flashfw.elf";
+    };
+
+    extsys1: remoteproc@...10318 {
+            compatible = "arm,corstone1000-extsys";
+            reg = <0x1a010318 0x4>, <0x1a01031c 0x4>;
+            reg-names = "reset-control", "reset-status";
+            firmware-name = "es1_flashfw.elf";
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 54d6a40feea5..eddaa3841a65 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1768,6 +1768,7 @@ ARM REMOTEPROC DRIVER
 M:	Abdellatif El Khlifi <abdellatif.elkhlifi@....com>
 L:	linux-remoteproc@...r.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/remoteproc/arm,rproc.yaml
 F:	drivers/remoteproc/arm_rproc.c
 
 ARM SMC WATCHDOG DRIVER
-- 
2.25.1