Merge tag 'gnss-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/gnss

Pull GNSS updates from Johan Hovold:

- add support for claiming and deasserting the safeboot pin found on
recent u-blox receivers

- fix timepulse pin description in the devicetree binding

... and some related binding updates

* tag 'gnss-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/gnss:
dt-bindings: gnss: fix timepulse description
dt-bindings: gnss: u-blox: use lowercase company name
dt-bindings: gnss: u-blox: use open-drain reset and safeboot in example
gnss: ubx: add support for the safeboot gpio
dt-bindings: gnss: u-blox: add safeboot gpio

Documentation/devicetree/bindings/gnss/gnss-common.yaml

···
     maxItems: 1
 
   timepulse-gpios:
-    description: When a timepulse is provided to the GNSS device using a
-      GPIO line, this is used.
+    description: Timepulse signal
     maxItems: 1
 
 additionalProperties: true

Documentation/devicetree/bindings/gnss/u-blox,neo-6m.yaml

···
 $id: http://devicetree.org/schemas/gnss/u-blox,neo-6m.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: U-blox GNSS Receiver
+title: u-blox GNSS receiver
 
 allOf:
   - $ref: gnss-common.yaml#
···
   - Johan Hovold <[e-mail]>
 
 description: >
-  The U-blox GNSS receivers can use UART, DDC (I2C), SPI and USB interfaces.
+  The u-blox GNSS receivers can use UART, DDC (I2C), SPI and USB interfaces.
 
 properties:
   compatible:
···
       depending on the bus used. Required for the DDC, SPI or USB busses.
 
   reset-gpios:
+    maxItems: 1
+
+  safeboot-gpios:
     maxItems: 1
 
   vcc-supply:
···
             compatible = "u-blox,neo-8";
             v-bckp-supply = <&gnss_v_bckp_reg>;
             vcc-supply = <&gnss_vcc_reg>;
-            reset-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+            reset-gpios = <&gpio 1 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>;
+            safeboot-gpios = <&gpio 2 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>;
         };
     };

drivers/gnss/ubx.c

···
 static int ubx_probe(struct serdev_device *serdev)
 {
 	struct gnss_serial *gserial;
+	struct gpio_desc *safeboot;
 	struct gpio_desc *reset;
 	struct ubx_data *data;
 	int ret;
···
 	ret = devm_regulator_get_enable_optional(&serdev->dev, "v-bckp");
 	if (ret < 0 && ret != -ENODEV)
 		goto err_free_gserial;
+
+	/* Deassert safeboot */
+	safeboot = devm_gpiod_get_optional(&serdev->dev, "safeboot", GPIOD_OUT_LOW);
+	if (IS_ERR(safeboot)) {
+		ret = PTR_ERR(safeboot);
+		goto err_free_gserial;
+	}
 
 	/* Deassert reset */
 	reset = devm_gpiod_get_optional(&serdev->dev, "reset", GPIOD_OUT_LOW);