[PATCH v9 01/10] dt-bindings: display: renesas,rzg2l-du: Add support for RZ/G3E SoC
From: Tommaso Merciai
Date: Fri Oct 23 2026 - 12:49:22 EST
The RZ/G3E Soc has 2 LCD controller (LCDC), contain a Frame Compression
Processor (FCPVD), a Video Signal Processor (VSPD), Video Signal
Processor (VSPD), and Display Unit (DU).
- LCDC0 supports DSI and LVDS (single or dual-channel) outputs.
- LCDC1 supports DSI, LVDS (single-channel), and RGB outputs.
Add new SoC-specific compatible string 'renesas,r9a09g047-du'.
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@xxxxxxxxxxxxxx>
---
v8->v9:
- Step back to v5 + added refusal of port3 for others SoCs.
- Adjusted order and ports description.
[v5] https://patchwork.kernel.org/project/linux-renesas-soc/patch/ca022fdbba5236c36e0cb3095db4c31e8e0cb1b8.1770996493.git.tommaso.merciai.xr@xxxxxxxxxxxxxx/
v7->v8:
- Rebased on top of RZ/G3L du support [1]
- Modelled using ports/port instead of port/ep.
[1] https://lore.kernel.org/all/20260826174854.199139-1-biju.das.jz@xxxxxxxxxxxxxx/
- Improved commit msg and commit body.
v6->v7:
- Rebased on top of [1]
[1] https://lore.kernel.org/all/20260429170012.366537-1-prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx/
- Use single DRM device aggregating both DU instances (1 DU dt node),
modelling single port for each DU0, DU1 and multiple endpoints for
outputs.
v5->v6:
- Extend patternProperties from "^port@[0-1]$" to "^port@[0-3]$" and
explicitly disable port@2 and port@3 for existing SoCs that do not expose
them.
- Reworked ports numbering + improved/fixed ports descriptions in the
bindings documentation.
- Improved commit body.
v4->v5:
- Dropped renesas,id property and updated bindings
accordingly.
v2->v3:
- No changes.
v2->v3:
- No changes.
v1->v2:
- Use single compatible string instead of multiple compatible strings
for the two DU instances, leveraging a 'renesas,id' property to
differentiate between DU0 and DU1.
- Updated commit message accordingly.
.../bindings/display/renesas,rzg2l-du.yaml | 28 ++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
index 5c9b15a09dee..14315b2898e1 100644
--- a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
+++ b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
@@ -21,6 +21,7 @@ properties:
- renesas,r9a07g043u-du # RZ/G2UL
- renesas,r9a07g044-du # RZ/G2{L,LC}
- renesas,r9a08g046-du # RZ/G3L
+ - renesas,r9a09g047-du # RZ/G3E
- renesas,r9a09g057-du # RZ/V2H(P)
- renesas,r9a09g077-du # RZ/T2H
- items:
@@ -66,7 +67,7 @@ properties:
model-dependent. Each port shall have a single endpoint.
patternProperties:
- "^port@[0-2]$":
+ "^port@[0-3]$":
$ref: /schemas/graph.yaml#/properties/port
unevaluatedProperties: false
@@ -110,6 +111,7 @@ allOf:
description: DPI
port@1: false
port@2: false
+ port@3: false
required:
- port@0
@@ -127,6 +129,7 @@ allOf:
port@1:
description: DPI
port@2: false
+ port@3: false
required:
- port@0
@@ -146,11 +149,33 @@ allOf:
description: DPI
port@2:
description: LVDS
+ port@3: false
required:
- port@0
- port@1
- port@2
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,r9a09g047-du
+ then:
+ properties:
+ ports:
+ properties:
+ port@0:
+ description: DSI
+ port@1:
+ description: DPAD
+ port@2:
+ description: LVDS 0
+ port@3:
+ description: LVDS 1
+
+ required:
+ - port@0
+ - port@3
- if:
properties:
compatible:
@@ -164,6 +189,7 @@ allOf:
description: DSI
port@1: false
port@2: false
+ port@3: false
required:
- port@0
--
2.54.0