[PATCH v3 1/7] dt-bindings: remoteproc: k3-r5f: Split up memory regions

Markus Schneider-Pargmann (TI)
2026-03-18T15:14:16Z

Split up the region reserved for the firmware image in more specific
sections to expose the full fixed layout. Especially the LPM metadata
section is important for bootloaders as it contains information about
how to exit IO+DDR. This is read by the bootloader but is written by the
firmware.

Signed-off-by: Markus Schneider-Pargmann (TI) <msp@baylibre.com>
---
.../bindings/remoteproc/ti,k3-r5f-rproc.yaml | 29 ++++++++++++++--------
1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
index a927551356e69d3961b3c5c6b72d027fabe83d3c..15e0286e4926865d88b693998e5aa64543ae125d 100644
--- a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml
@@ -154,17 +154,26 @@ patternProperties:
memory-region:
description: |
phandle to the reserved memory nodes to be associated with the
- remoteproc device. There should be at least two reserved memory nodes
- defined. The reserved memory nodes should be carveout nodes, and
- should be defined with a "no-map" property as per the bindings in
+ remoteproc device. There should be two reserved memory nodes defined
+ for the basic layout or 6 partitions for a detailed layout. The
+ reserved memory nodes should be carveout nodes, and should be defined
+ with a "no-map" property as per the bindings in
Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
- minItems: 2
- maxItems: 8
- items:
- - description: region used for dynamic DMA allocations like vrings and
- vring buffers
- - description: region reserved for firmware image sections
- additionalItems: true
+ oneOf:
+ - description: Basic layout
+ items:
+ - description: region used for dynamic DMA allocations like vrings and
+ vring buffers
+ - description: region reserved for firmware image sections
+ - description: Detailed layout
+ items:
+ - description: region used for dynamic DMA allocations like vrings and
+ vring buffers
+ - description: region reserved for IPC resources
+ - description: LPM FS stub binary
+ - description: LPM metadata
+ - description: LPM FS context data and reserved sections
+ - description: DM RM/PM trace and firmware code/data

# Optional properties:
# --------------------

--
2.53.0