diff mbox series

[v5] dt-bindings: serial: renesas,em-uart: Add RZ/V2M clock to access the registers

Message ID 20220512072649.7879-1-phil.edworthy@renesas.com (mailing list archive)
State Accepted
Delegated to: Geert Uytterhoeven
Headers show
Series [v5] dt-bindings: serial: renesas,em-uart: Add RZ/V2M clock to access the registers | expand

Commit Message

Phil Edworthy May 12, 2022, 7:26 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>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v5:
 - Move clock properites to top level
v4:
 - Removed "optional" from description of clock to access the registers
v3:
 - New patch added
---
 .../bindings/serial/renesas,em-uart.yaml      | 28 +++++++++++++++----
 1 file changed, 23 insertions(+), 5 deletions(-)

Comments

Rob Herring May 17, 2022, 6:08 p.m. UTC | #1
On Thu, 12 May 2022 08:26:49 +0100, Phil Edworthy wrote:
> 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>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> v5:
>  - Move clock properites to top level
> v4:
>  - Removed "optional" from description of clock to access the registers
> v3:
>  - New patch added
> ---
>  .../bindings/serial/renesas,em-uart.yaml      | 28 +++++++++++++++----
>  1 file changed, 23 insertions(+), 5 deletions(-)
> 

Reviewed-by: Rob Herring <robh@kernel.org>
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..b25aca733b72 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:
@@ -30,10 +27,31 @@  properties:
     maxItems: 1
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: UART functional clock
+      - description: Internal clock to access the registers
 
   clock-names:
-    const: sclk
+    minItems: 1
+    items:
+      - const: sclk
+      - const: pclk
+
+allOf:
+  - $ref: serial.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g011-uart
+    then:
+      properties:
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
 
 required:
   - compatible