[PATCH 1/2] Documentation: dt-bindings: k3-r5f-rproc: Add new compatible for AM62 SoC family

Devarsh Thakkar
2022-11-15T06:09:50Z

AM62 family of devices don't have a R5F cluster, instead
they have single core DM R5F.
Add new compatible string ti,am62-r5fss to support this scenario.

When this new compatible is used don't allow cluster-mode
property usage in device-tree as this implies that there
is no R5F cluster available and only single R5F core
is present.

Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
---
.../bindings/remoteproc/ti,k3-r5f-rproc.yaml | 48 +++++++++++++------
1 file changed, 34 insertions(+), 14 deletions(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
index fb9605f0655b..1f5eae806c2f 100644
--- a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
@@ -21,6 +21,9 @@ description: |
called "Single-CPU" mode, where only Core0 is used, but with ability to use
Core1's TCMs as well.

+ AM62 SoC family support a single R5F core only which is used for DM firmware
+ and can also be used as a remote processor with IPC communication.
+
Each Dual-Core R5F sub-system is represented as a single DTS node
representing the cluster, with a pair of child DT nodes representing
the individual R5F cores. Each node has a number of required or optional
@@ -28,6 +31,9 @@ description: |
the device management of the remote processor and to communicate with the
remote processor.

+ Since AM62 SoC family only support a single core, there is no cluster-mode
+ property setting required for it.
+
properties:
$nodename:
pattern: "^r5fss(@.*)?"
@@ -38,6 +44,7 @@ properties:
- ti,j721e-r5fss
- ti,j7200-r5fss
- ti,am64-r5fss
+ - ti,am62-r5fss
- ti,j721s2-r5fss

power-domains:
@@ -80,7 +87,8 @@ patternProperties:
node representing a TI instantiation of the Arm Cortex R5F core. There
are some specific integration differences for the IP like the usage of
a Region Address Translator (RAT) for translating the larger SoC bus
- addresses into a 32-bit address space for the processor.
+ addresses into a 32-bit address space for the processor. For AM62x,
+ should only define one R5F child node as it has only one core available.

Each R5F core has an associated 64 KB of Tightly-Coupled Memory (TCM)
internal memories split between two banks - TCMA and TCMB (further
@@ -104,6 +112,7 @@ patternProperties:
- ti,j721e-r5f
- ti,j7200-r5f
- ti,am64-r5f
+ - ti,am62-r5f
- ti,j721s2-r5f

reg:
@@ -207,20 +216,31 @@ patternProperties:
- firmware-name

unevaluatedProperties: false
+allOf:
+ - if:
+ properties:
+ compatible:
+ enum:
+ - ti,am64-r5fss
+ then:
+ properties:
+ ti,cluster-mode:
+ enum: [0, 2]
+
+ else:
+ properties:
+ ti,cluster-mode:
+ enum: [0, 1]
+
+ - if:
+ properties:
+ compatible:
+ enum:
+ - ti,am62-r5fss
+ then:
+ properties:
+ ti,cluster-mode: false

-if:
- properties:
- compatible:
- enum:
- - ti,am64-r5fss
-then:
- properties:
- ti,cluster-mode:
- enum: [0, 2]
-else:
- properties:
- ti,cluster-mode:
- enum: [0, 1]

required:
- compatible
--
2.17.1