arm64: zynqmp: Add linux,code for fwuen button

BTN_MISC looks like the most reasonable option for this button.
Button is used by firmware to indicate (after reset, power up) that user
wants to do firmware upgrade via firmware update utility.
For bootloader or OS is this just user button which is worth to have it
mapped.
Also button can be used as a wakeup source and pressing it for more time
can generate more chars that's why also adding wakeup-source and autorepeat
properties.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Link: https://lore.kernel.org/r/7f6d627473632c3c3036ec9f6aaa36e00f4615e2.1652262769.git.michal.simek@amd.com

diff --git a/arch/arm/dts/zynqmp-sm-k26-revA.dts b/arch/arm/dts/zynqmp-sm-k26-revA.dts
index 35fab915172b2009cf576cddfe3c11ffb13e970d..7c2bfa395da70af797063066a5a72b460ec2ab7d 100644 (file)
--- a/arch/arm/dts/zynqmp-sm-k26-revA.dts
+++ b/arch/arm/dts/zynqmp-sm-k26-revA.dts
@@ -56,6 +56,9 @@
                fwuen {
                        label = "fwuen";
                        gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+                       linux,code = <BTN_MISC>;
+                       wakeup-source;
+                       autorepeat;
                };
        };