linux-kernel - [PATCH v6 05/13] dt-bindings: mtd: brcmnand: Add WP pin connection property

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Date: Thu, 22 Feb 2024 19:47:50 -0800
From: William Zhang <william.zhang@...adcom.com>
To: Linux MTD List <linux-mtd@...ts.infradead.org>,
	Linux ARM List <linux-arm-kernel@...ts.infradead.org>,
	Broadcom Kernel List <bcm-kernel-feedback-list@...adcom.com>
Cc: f.fainelli@...il.com,
	kursad.oney@...adcom.com,
	joel.peshkin@...adcom.com,
	anand.gore@...adcom.com,
	dregan@...l.com,
	kamal.dasu@...adcom.com,
	tomer.yacoby@...adcom.com,
	dan.beygelman@...adcom.com,
	William Zhang <william.zhang@...adcom.com>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	devicetree@...r.kernel.org,
	Brian Norris <computersforpeace@...il.com>,
	linux-kernel@...r.kernel.org,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Vignesh Raghavendra <vigneshr@...com>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Kamal Dasu <kdasu.kdev@...il.com>,
	Rob Herring <robh+dt@...nel.org>
Subject: [PATCH v6 05/13] dt-bindings: mtd: brcmnand: Add WP pin connection property

Add brcm,wp-not-connected property to have an option for disabling this
feature on broadband board design that does not connect WP pin.

Signed-off-by: William Zhang <william.zhang@...adcom.com>
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>

---

Changes in v6:
- Add reviewed-by tags

Changes in v5:
- Update the description of this new property

Changes in v4:
- Move the WP pin property to this separate patch and change it to
boolean type.

Changes in v3: None
Changes in v2: None

 Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml
index e54ca08a798a..6a717bcedfd3 100644
--- a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml
+++ b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml
@@ -113,6 +113,13 @@ properties:
       earlier versions of this core that include WP
     type: boolean
 
+  brcm,wp-not-connected:
+    description:
+      Use this property when WP pin is not physically wired to the NAND chip.
+      Write protection feature cannot be used. By default, controller assumes
+      the pin is connected and feature is used.
+    $ref: /schemas/types.yaml#/definitions/flag
+
 patternProperties:
   "^nand@[a-f0-9]$":
     type: object
-- 
2.37.3