dt-bindings: display: bridge: renesas,dsi: Document RZ/V2H(P) and RZ/V2N

Add the compatible string "renesas,r9a09g057-mipi-dsi" for the Renesas
RZ/V2H(P) (R9A09G057) SoC. While the MIPI DSI LINK registers are shared
with the RZ/G2L SoC, the D-PHY register layout differs. Additionally, the
RZ/V2H(P) uses only two resets compared to three on RZ/G2L, and requires
five clocks instead of six.

To reflect these hardware differences, update the binding schema to
support the reduced clock and reset requirements for RZ/V2H(P).

Since the RZ/V2N (R9A09G056) SoC integrates an identical DSI IP to
RZ/V2H(P), the same "renesas,r9a09g057-mipi-dsi" compatible string is
reused for RZ/V2N.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://patch.msgid.link/20251015192611.241920-6-prabhakar.mahadev-lad.rj@bp.renesas.com

1 files changed, 91 insertions, 29 deletions

diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml b/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
index 5a99d9b9635e..c20625b8425e 100644
--- a/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
@@ -14,16 +14,21 @@ description: |
   RZ/G2L alike family of SoC's. The encoder can operate in DSI mode, with
   up to four data lanes.
 
-allOf:
-  - $ref: /schemas/display/dsi-controller.yaml#
-
 properties:
   compatible:
-    items:
+    oneOf:
+      - items:
+          - enum:
+              - renesas,r9a07g044-mipi-dsi # RZ/G2{L,LC}
+              - renesas,r9a07g054-mipi-dsi # RZ/V2L
+          - const: renesas,rzg2l-mipi-dsi
+
+      - items:
+          - const: renesas,r9a09g056-mipi-dsi # RZ/V2N
+          - const: renesas,r9a09g057-mipi-dsi
+
       - enum:
-          - renesas,r9a07g044-mipi-dsi # RZ/G2{L,LC}
-          - renesas,r9a07g054-mipi-dsi # RZ/V2L
-      - const: renesas,rzg2l-mipi-dsi
+          - renesas,r9a09g057-mipi-dsi # RZ/V2H(P)
 
   reg:
     maxItems: 1
@@ -49,34 +54,56 @@ properties:
       - const: debug
 
   clocks:
-    items:
-      - description: DSI D-PHY PLL multiplied clock
-      - description: DSI D-PHY system clock
-      - description: DSI AXI bus clock
-      - description: DSI Register access clock
-      - description: DSI Video clock
-      - description: DSI D-PHY Escape mode transmit clock
+    oneOf:
+      - items:
+          - description: DSI D-PHY PLL multiplied clock
+          - description: DSI D-PHY system clock
+          - description: DSI AXI bus clock
+          - description: DSI Register access clock
+          - description: DSI Video clock
+          - description: DSI D-PHY Escape mode transmit clock
+      - items:
+          - description: DSI D-PHY PLL reference clock
+          - description: DSI AXI bus clock
+          - description: DSI Register access clock
+          - description: DSI Video clock
+          - description: DSI D-PHY Escape mode transmit clock
 
   clock-names:
-    items:
-      - const: pllclk
-      - const: sysclk
-      - const: aclk
-      - const: pclk
-      - const: vclk
-      - const: lpclk
+    oneOf:
+      - items:
+          - const: pllclk
+          - const: sysclk
+          - const: aclk
+          - const: pclk
+          - const: vclk
+          - const: lpclk
+      - items:
+          - const: pllrefclk
+          - const: aclk
+          - const: pclk
+          - const: vclk
+          - const: lpclk
 
   resets:
-    items:
-      - description: MIPI_DSI_CMN_RSTB
-      - description: MIPI_DSI_ARESET_N
-      - description: MIPI_DSI_PRESET_N
+    oneOf:
+      - items:
+          - description: MIPI_DSI_CMN_RSTB
+          - description: MIPI_DSI_ARESET_N
+          - description: MIPI_DSI_PRESET_N
+      - items:
+          - description: MIPI_DSI_ARESET_N
+          - description: MIPI_DSI_PRESET_N
 
   reset-names:
-    items:
-      - const: rst
-      - const: arst
-      - const: prst
+    oneOf:
+      - items:
+          - const: rst
+          - const: arst
+          - const: prst
+      - items:
+          - const: arst
+          - const: prst
 
   power-domains:
     maxItems: 1
@@ -130,6 +157,41 @@ required:
 
 unevaluatedProperties: false
 
+allOf:
+  - $ref: ../dsi-controller.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g057-mipi-dsi
+    then:
+      properties:
+        clocks:
+          maxItems: 5
+
+        clock-names:
+          maxItems: 5
+
+        resets:
+          maxItems: 2
+
+        reset-names:
+          maxItems: 2
+    else:
+      properties:
+        clocks:
+          minItems: 6
+
+        clock-names:
+          minItems: 6
+
+        resets:
+          minItems: 3
+
+        reset-names:
+          minItems: 3
+
 examples:
   - |
     #include <dt-bindings/clock/r9a07g044-cpg.h>