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

abdellatif.elkhlifi
2024-03-01T16:43:27Z

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

introduce the bindings for Arm remoteproc support.

Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.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@arm.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@1a010310 {
+ compatible = "arm,corstone1000-extsys";
+ reg = <0x1a010310 0x4>, <0x1a010314 0x4>;
+ reg-names = "reset-control", "reset-status";
+ firmware-name = "es0_flashfw.elf";
+ };
+
+ extsys1: remoteproc@1a010318 {
+ 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@arm.com>
L: linux-remoteproc@vger.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