From:   David Mosberger-Tang <davidm@egauge.net>
Subject: [PATCH v5 2/2] wilc1000: Document enable-gpios and reset-gpios
 properties
Date:   Wed, 15 Dec 2021 03:05:12 +0000 (UTC)
Message-Id: <20211215030501.3779911-3-davidm@egauge.net>
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To:     Ajay Singh <ajay.kathat@microchip.com>
Cc:     Adham Abozaeid <adham.abozaeid@microchip.com>,
        Claudiu Beznea <claudiu.beznea@microchip.com>,
        "David S. Miller" <davem@davemloft.net>,
        devicetree@vger.kernel.org, Jakub Kicinski <kuba@kernel.org>,
        Kalle Valo <kvalo@codeaurora.org>,
        linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
        netdev@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
        David Mosberger-Tang <davidm@egauge.net>
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Add documentation for the ENABLE and RESET GPIOs that may be needed by
wilc1000-spi.

Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
---
 .../net/wireless/microchip,wilc1000.yaml      | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/microchip,wilc1000.yaml b/Documentation/devicetree/bindings/net/wireless/microchip,wilc1000.yaml
index 6c35682377e6..60de78f1bc7b 100644
--- a/Documentation/devicetree/bindings/net/wireless/microchip,wilc1000.yaml
+++ b/Documentation/devicetree/bindings/net/wireless/microchip,wilc1000.yaml
@@ -32,6 +32,21 @@ properties:
   clock-names:
     const: rtc
 
+  enable-gpios:
+    maxItems: 1
+    description: Used by wilc1000-spi to determine the GPIO line
+      connected to the ENABLE line.  If specified, reset-gpios
+      must be specified as well as otherwise the driver cannot
+      ensure the timing required between asserting ENABLE
+      and deasserting RESET.  This should be declared as an
+      active-high signal.
+
+  reset-gpios:
+    maxItems: 1
+    description: Used by wilc1000-spi to determine the GPIO line
+      connected to the RESET line.  This should be declared as an
+      active-low signal.
+
 required:
   - compatible
   - interrupts
@@ -40,6 +55,8 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/gpio/gpio.h>
+
     spi {
       #address-cells = <1>;
       #size-cells = <0>;
@@ -51,6 +68,8 @@ examples:
         interrupts = <27 0>;
         clocks = <&pck1>;
         clock-names = "rtc";
+        enable-gpios = <&pioA 5 GPIO_ACTIVE_HIGH>;
+        reset-gpios = <&pioA 6 GPIO_ACTIVE_LOW>;
       };
     };
 
-- 
2.25.1