linux-kernel - [PATCH 3/8] dt-bindings: reset: atmel,at91sam9260-reset: add sama7g5 bindings

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Message-ID: <20220405112724.2760905-4-claudiu.beznea@microchip.com>
Date:   Tue, 5 Apr 2022 14:27:19 +0300
From:   Claudiu Beznea <claudiu.beznea@...rochip.com>
To:     <robh+dt@...nel.org>, <nicolas.ferre@...rochip.com>,
        <alexandre.belloni@...tlin.com>, <p.zabel@...gutronix.de>,
        <sre@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pm@...r.kernel.org>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>
Subject: [PATCH 3/8] dt-bindings: reset: atmel,at91sam9260-reset: add sama7g5 bindings

Add documentation for SAMA7G5 reset controller. Compared with previous
versions of reset controllers this one contains support for resetting
in SoC devices (e.g. USB PHYs).

Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
---
 .../reset/atmel,at91sam9260-reset.yaml        | 23 +++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml b/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
index 92936c987c9a..a165c10ae474 100644
--- a/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
+++ b/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
@@ -10,7 +10,8 @@ maintainers:
   - Claudiu Beznea <claudiu.beznea@...il.com>
 
 description: |
-  The system reset controller can be used to reset the CPU.
+  The system reset controller can be used to reset the CPU. In case of
+  SAMA7G5 it can also reset some devices (e.g. USB PHYs).
 
 properties:
   compatible:
@@ -21,21 +22,39 @@ properties:
               - atmel,at91sam9g45-rstc
               - atmel,sama5d3-rstc
               - microchip,sam9x60-rstc
+              - microchip,sama7g5-rstc
       - items:
           - const: atmel,sama5d3-rstc
           - const: atmel,at91sam9g45-rstc
 
   reg:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: base registers for system reset control
+      - description: registers for device specific reset control
 
   clocks:
     maxItems: 1
 
+  "#reset-cells":
+    const: 1
+
 required:
   - compatible
   - reg
   - clocks
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - microchip,sama7g5-rstc
+    then:
+      required:
+        - "#reset-cells"
+
 additionalProperties: false
 
 examples:
-- 
2.32.0