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From:   Christophe Kerello <christophe.kerello@foss.st.com>
To:     <miquel.raynal@bootlin.com>, <richard@nod.at>, <vigneshr@ti.com>,
        <robh+dt@kernel.org>, <srinivas.kandagatla@linaro.org>,
        <p.yadav@ti.com>
CC:     <linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
        <linux-stm32@st-md-mailman.stormreply.com>,
        <devicetree@vger.kernel.org>, <chenshumin86@sina.com>,
        Christophe Kerello <christophe.kerello@foss.st.com>,
        Rob Herring <robh@kernel.org>
Subject: [PATCH v3 1/4] dt-binding: mtd: nand: Document the wp-gpios property
Date:   Thu, 17 Feb 2022 15:47:52 +0100
Message-ID: <20220217144755.270679-2-christophe.kerello@foss.st.com>
In-Reply-To: <20220217144755.270679-1-christophe.kerello@foss.st.com>
References: <20220217144755.270679-1-christophe.kerello@foss.st.com>
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A few drivers use this property to describe the GPIO pin used to protect
the NAND during program/erase operations.

Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com>
Acked-by: Rob Herring <robh@kernel.org>
---
Changes in v2:
 - add Rob Acked-by.

 Documentation/devicetree/bindings/mtd/nand-controller.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
index bd217e6f5018..53b21aed0ac5 100644
--- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml
+++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
@@ -154,6 +154,13 @@ patternProperties:
           Ready/Busy pins. Active state refers to the NAND ready state and
           should be set to GPIOD_ACTIVE_HIGH unless the signal is inverted.
 
+      wp-gpios:
+        description:
+          Contains one GPIO descriptor for the Write Protect pin.
+          Active state refers to the NAND Write Protect state and should be
+          set to GPIOD_ACTIVE_LOW unless the signal is inverted.
+        maxItems: 1
+
       secure-regions:
         $ref: /schemas/types.yaml#/definitions/uint64-matrix
         description:
-- 
2.25.1