linux-kernel - [PATCH v1 1/3] dt-bindings: serial: snps-dw-apb-uart: Add one more reset signal for StarFive JH7110 SoC

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Date: Fri, 17 May 2024 14:17:11 +0800
From: Hal Feng <hal.feng@...rfivetech.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Conor Dooley <conor+dt@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Albert Ou <aou@...s.berkeley.edu>
Cc: Emil Renner Berthing <emil.renner.berthing@...onical.com>,
	Hal Feng <hal.feng@...rfivetech.com>,
	devicetree@...r.kernel.org,
	linux-serial@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/3] dt-bindings: serial: snps-dw-apb-uart: Add one more reset signal for StarFive JH7110 SoC

The UART of StarFive JH7110 has two reset signals.
Both of them are necessary for JH7110 to initialize UART.

Signed-off-by: Hal Feng <hal.feng@...rfivetech.com>
---
 .../bindings/serial/snps-dw-apb-uart.yaml          | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
index 1001d2a6ace8..a6396c5cbfb1 100644
--- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
@@ -13,6 +13,16 @@ allOf:
   - $ref: serial.yaml#
   - $ref: rs485.yaml#
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: starfive,jh7110-uart
+    then:
+      properties:
+        resets:
+          minItems: 2
+
 properties:
   compatible:
     oneOf:
@@ -48,6 +58,7 @@ properties:
           - enum:
               - starfive,jh7100-hsuart
               - starfive,jh7100-uart
+              - starfive,jh7110-uart
           - const: snps,dw-apb-uart
       - const: snps,dw-apb-uart
 
@@ -82,7 +93,8 @@ properties:
     type: boolean
 
   resets:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   reg-shift: true
 
-- 
2.43.2