feat(drivers/arm/ethosn)!: multi-device support
Add support for Arm Ethos-N NPU multi-device.
The device tree parsing currently only supports one NPU device with
multiple cores. To be able to support multi-device NPU configurations
this patch adds support for having multiple NPU devices in the device
tree.
To be able to support multiple NPU devices in the SMC API, it has been
changed in an incompatible way so the API version has been bumped.
Signed-off-by: Laurent Carlier <laurent.carlier@arm.com>
Change-Id: Ide279ce949bd06e8939268b9601c267e45f3edc3
diff --git a/fdts/juno-ethosn.dtsi b/fdts/juno-ethosn.dtsi
index 87ab378..e2f3355 100644
--- a/fdts/juno-ethosn.dtsi
+++ b/fdts/juno-ethosn.dtsi
@@ -4,19 +4,21 @@
* SPDX-License-Identifier: BSD-3-Clause
*/
+/*
+ * For examples of multi-core and multi-device NPU, refer to the examples given in the
+ * Arm Ethos-N NPU driver stack.
+ * https://github.com/ARM-software/ethos-n-driver-stack
+ */
+
/ {
#address-cells = <2>;
#size-cells = <2>;
- ethosn: ethosn@6f300000 {
+ ethosn0: ethosn@6f300000 {
compatible = "ethosn";
reg = <0 0x6f300000 0 0x00100000>;
status = "okay";
- /*
- * Single-core NPU. For multi-core NPU, additional core nodes
- * and reg values must be added.
- */
core0 {
compatible = "ethosn-core";
status = "okay";