diff mbox series

[v3,01/12] dt-bindings: serial: renesas,em-uart: Add RZ/V2M clock to access the registers

Message ID 20220503115557.53370-2-phil.edworthy@renesas.com
State New
Headers show
Series [v3,01/12] dt-bindings: serial: renesas,em-uart: Add RZ/V2M clock to access the registers | expand

Commit Message

Phil Edworthy May 3, 2022, 11:55 a.m. UTC 
The RZ/V2M SoC has an additional clock to access the registers. The HW
manual says this clock should not be touched as it is used by the
"ISP Firmware".

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
---
v3:
 - New patch added
---
 .../bindings/serial/renesas,em-uart.yaml      | 32 +++++++++++++++----
 1 file changed, 25 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml b/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml
index 332c385618e1..8d0e779d7d77 100644
--- a/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,em-uart.yaml
@@ -9,9 +9,6 @@  title: Renesas EMMA Mobile UART Interface
 maintainers:
   - Magnus Damm <magnus.damm@gmail.com>
 
-allOf:
-  - $ref: serial.yaml#
-
 properties:
   compatible:
     oneOf:
@@ -29,11 +26,32 @@  properties:
   interrupts:
     maxItems: 1
 
-  clocks:
-    maxItems: 1
+allOf:
+  - $ref: serial.yaml#
 
-  clock-names:
-    const: sclk
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g011-uart
+    then:
+      properties:
+        clocks:
+          items:
+            - description: UART functional clock
+            - description: Optional internal clock to access the registers
+        clock-names:
+          items:
+            - const: sclk
+            - const: pclk
+    else:
+      properties:
+        clocks:
+          items:
+            - description: UART functional clock
+        clock-names:
+          items:
+            - const: sclk
 
 required:
   - compatible