linux-kernel - [PATCH v2 2/2] wilc1000: Document enable-gpios and reset-gpios properties

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Message-Id: <20211208061559.3404738-3-davidm@egauge.net>
Date:   Wed, 08 Dec 2021 06:16:12 +0000 (UTC)
From:   David Mosberger-Tang <davidm@...uge.net>
To:     Ajay Singh <ajay.kathat@...rochip.com>
Cc:     Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Adham Abozaeid <adham.abozaeid@...rochip.com>,
        devicetree@...r.kernel.org,
        David Mosberger-Tang <davidm@...uge.net>
Subject: [PATCH v2 2/2] wilc1000: Document enable-gpios and reset-gpios
 properties

Add documentation for the ENABLE and RESET GPIOs that may be needed by
wilc1000-spi.

Signed-off-by: David Mosberger-Tang <davidm@...uge.net>
---
 .../bindings/net/wireless/microchip,wilc1000.yaml | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/microchip,wilc1000.yaml b/Documentation/devicetree/bindings/net/wireless/microchip,wilc1000.yaml
index 6c35682377e6..e4da2a58fcb2 100644
--- a/Documentation/devicetree/bindings/net/wireless/microchip,wilc1000.yaml
+++ b/Documentation/devicetree/bindings/net/wireless/microchip,wilc1000.yaml
@@ -32,6 +32,19 @@ properties:
   clock-names:
     const: rtc
 
+  enable-gpios:
+    maxItems: 1
+    description: Used by wilc1000-spi to determine the GPIO line
+      connected to the ENABLE line.  Unless special external circuitry
+      is used, reset-gpios must be specified when enable-gpios is
+      specified as otherwise the driver cannot ensure the proper
+      ENABLE/RESET sequence when enabling the chip.
+
+  reset-gpios:
+    maxItems: 1
+    description: Used by wilc1000-spi to determine the GPIO line
+      connected to the RESET line.
+
 required:
   - compatible
   - interrupts
@@ -51,6 +64,8 @@ examples:
         interrupts = <27 0>;
         clocks = <&pck1>;
         clock-names = "rtc";
+        enable-gpios = <&pioA 5 0>;
+        reset-gpios = <&pioA 6 0>;
       };
     };
 
-- 
2.25.1