linux-kernel - [PATCH 1/2] dt-bindings: gnss: u-blox: add "safeboot-gpios" binding

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Message-Id: <20250514-ubx-safeboot-v1-1-1ae771335356@geotab.com>
Date: Wed, 14 May 2025 15:54:41 +0200
From: Alejandro Enrique via B4 Relay <devnull+alejandroe1.geotab.com@...nel.org>
To: Johan Hovold <johan@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Alejandro Enrique <alejandroe1@...tab.com>
Subject: [PATCH 1/2] dt-bindings: gnss: u-blox: add "safeboot-gpios"
 binding

From: Alejandro Enrique <alejandroe1@...tab.com>

U-Blox M8/M9 chip have a pin to start it in safeboot mode, to be used
to recover from situations where the flash content has become
corrupted and needs to be restored. Introduce a binding to support
this safeboot pin.

Signed-off-by: Alejandro Enrique <alejandroe1@...tab.com>
---
 Documentation/devicetree/bindings/gnss/u-blox,neo-6m.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/gnss/u-blox,neo-6m.yaml b/Documentation/devicetree/bindings/gnss/u-blox,neo-6m.yaml
index 7d4b6d49e5eea2201ac05ba6d54b1c1721172f26..16d922279def99257c194520a7ac820f2a26e9c7 100644
--- a/Documentation/devicetree/bindings/gnss/u-blox,neo-6m.yaml
+++ b/Documentation/devicetree/bindings/gnss/u-blox,neo-6m.yaml
@@ -32,6 +32,9 @@ properties:
   reset-gpios:
     maxItems: 1
 
+  safeboot-gpios:
+    maxItems: 1
+
   vcc-supply:
     description: >
       Main voltage regulator
@@ -61,5 +64,6 @@ examples:
             v-bckp-supply = <&gnss_v_bckp_reg>;
             vcc-supply = <&gnss_vcc_reg>;
             reset-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+            safeboot-gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
         };
     };

-- 
2.34.1