Thread (17 messages) 17 messages, 4 authors, 4h ago
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[PATCH 01/16] dt-bindings: display: bridge: renesas,dsi: Document RZ/G3L

From: Biju <hidden>
Date: 2026-07-04 09:34:43
Also in: dri-devel, linux-renesas-soc, lkml
Subsystem: drm drivers, drm drivers and misc gpu patches, drm drivers for bridge chips, open firmware and flattened device tree bindings, the rest · Maintainers: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Andrzej Hajda, Neil Armstrong, Robert Foss, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

From: Biju Das <biju.das.jz@bp.renesas.com>

The RZ/G3L DSI IP is similar to the RZ/G2L but has different global PHY
timings and also the PLLCLK is ungateble clock. Add the compatible
string "renesas,r9a08g046-mipi-dsi" to handle these difference for the
Renesas RZ/G3L SoC. The power to DSI region is controlled by SYSC block.
Document renesas,sysc-pwrrdy property to handle the power control.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 .../bindings/display/bridge/renesas,dsi.yaml      | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml b/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
index c20625b8425e..b114ac3b111a 100644
--- a/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
@@ -28,6 +28,7 @@ properties:
           - const: renesas,r9a09g057-mipi-dsi
 
       - enum:
+          - renesas,r9a08g046-mipi-dsi # RZ/G3L
           - renesas,r9a09g057-mipi-dsi # RZ/V2H(P)
 
   reg:
@@ -108,6 +109,20 @@ properties:
   power-domains:
     maxItems: 1
 
+  renesas,sysc-pwrrdy:
+    description:
+      The system controller PWRRDY indicates to the DSI region, if the power
+      supply is ready. PWRRDY needs to be set during power-on before applying
+      any other settings. It also needs to be set before powering off the DSI.
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      - items:
+          - description:
+              System controller phandle required by DSI driver to set
+              PWRRDY
+          - description: Register offset associated with PWRRDY
+          - description: Register bitmask associated with PWRRDY
+
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
 
-- 
2.43.0
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