Hi Biju,
Thanks for your review.
On 2/15/26 09:11, Biju Das wrote:
Hi Tommaso,
Thanks for the patch.
-----Original Message-----
From: Tommaso Merciai <[email protected]>
Sent: 13 February 2026 16:28
Subject: [PATCH v5 09/20] dt-bindings: display: renesas,rzg2l-du: Add support
for RZ/G3E SoC
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 <[email protected]>
---
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 | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
index 2cc66dcef870..be50b153d651 100644
--- a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
+++ b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
@@ -20,6 +20,7 @@ properties:
- enum:
- renesas,r9a07g043u-du # RZ/G2UL
- renesas,r9a07g044-du # RZ/G2{L,LC}
+ - renesas,r9a09g047-du # RZ/G3E
- renesas,r9a09g057-du # RZ/V2H(P)
- items:
- enum:
@@ -137,6 +138,27 @@ allOf:
required:
- port@0
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,r9a09g047-du
+ then:
+ properties:
+ ports:
+ properties:
+ port@0:
+ description: DSI
+ port@1:
+ description: LVDS Channel 0
+ port@2:
+ description: LVDS Channel 1
+ port@3:
+ description: DPAD
+
+ required:
+ - port@0
+ - port@1
LCDC0 has port@0, port@1 and port@2
LCDC1 has port@0, port@1 and port@3
Looks like from the above port@2 and port@3 are optional??
As we are using the the same compatible for both DUs the only way I
found to differentiate betweeen DU0 and DU1 is the introduction of
renesas,id = <0> -> DU0
renesas,id = <1> -> DU1
Like proposed in v4 [0].
What do you think? Suggestions?
Also not sure to make port@1 for DPAD for consistency with RZ/G2L??
Do you see any advantage by making port@1 for LVDS0?
I'm planning to rework v6 with the following:
- if:
properties:
compatible:
contains:
const: renesas,r9a09g047-du
then:
properties:
ports:
properties:
port@0:
description: DSI
port@1:
description: DPAD
port@2:
description: LVDS, Channel 0
port@3:
description: LVDS, Channel 1
required:
- port@0
- port@3
Cheers,
Biju
[0]
https://patchwork.kernel.org/project/linux-renesas-soc/patch/4986c5a3c5cda9e754ed1f9f7121b32e9bf4499f.1770030493.git.tommaso.merciai...@bp.renesas.com/
Kind Regards,
Tommaso
