[PATCH RFC v3 2/6] arm: dts: marvell: armada-388-clearfog-base: add rfkill for m.2

[Josua Mayer <josua@solid-run.com>]

Armada 388 Clearfog Base has a USB-3.0 / SATA capable m.2 connector,
with various pins controlled by the host:

- FULL_CARD_POWER_OFF#: When low, M.2 LTE modules are switched off.
  Many modules include pull-down, thus it must be driven high actively.
- RESET#: Puts modules into reset when low. Modules are expected to
  include pull-up.
- GNSS_DISABLE#
- W_DISABLE#

Add rfkill devices for gnss and wwan.

Signed-off-by: Josua Mayer <josua@solid-run.com>
---
 arch/arm/boot/dts/marvell/armada-388-clearfog-base.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm/boot/dts/marvell/armada-388-clearfog-base.dts b/arch/arm/boot/dts/marvell/armada-388-clearfog-base.dts
index 03153186c7bb..308ad9d1c70f 100644
--- a/arch/arm/boot/dts/marvell/armada-388-clearfog-base.dts
+++ b/arch/arm/boot/dts/marvell/armada-388-clearfog-base.dts
@@ -27,6 +27,23 @@ button-0 {
 			linux,code = <BTN_0>;
 		};
 	};
+
+	rfkill-m2-gnss {
+		compatible = "rfkill-gpio";
+		label = "m.2 GNSS";
+		radio-type = "gps";
+		/* rfkill-gpio inverts internally */
+		shutdown-gpios = <&expander0 9 GPIO_ACTIVE_HIGH>;
+	};
+
+	/* M.2 is B-keyed, so w-disable is for WWAN */
+	rfkill-m2-wwan {
+		compatible = "rfkill-gpio";
+		label = "m.2 WWAN";
+		radio-type = "wwan";
+		/* rfkill-gpio inverts internally */
+		shutdown-gpios = <&expander0 8 GPIO_ACTIVE_HIGH>;
+	};
 };
 
 &eth1 {

-- 
2.43.0