arm64: dts: librem5-devkit: allow modem to wake the system from suspend

Connect the WoWWAN signal to a gpio key to wake up the system from suspend.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
index 84443e4857d51561fec9feb3bcacdafc95a36d09..823d5c60a8fad2bb9807f2de47a6172a5894e15d 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
@@ -55,6 +55,15 @@
                        wakeup-source;
                        linux,code = <KEY_HP>;
                };
+
+               wwan-wake {
+                       label = "WWAN_WAKE";
+                       gpios = <&gpio3 8 GPIO_ACTIVE_LOW>;
+                       interrupt-parent = <&gpio3>;
+                       interrupts = <8 GPIO_ACTIVE_LOW>;
+                       wakeup-source;
+                       linux,code = <KEY_PHONE>;
+               };
        };
 
        leds {
@@ -576,6 +585,7 @@
                        MX8MQ_IOMUXC_SAI2_RXFS_GPIO4_IO21       0x16
                        MX8MQ_IOMUXC_SAI2_RXC_GPIO4_IO22        0x16
                        MX8MQ_IOMUXC_SAI5_RXC_GPIO3_IO20        0x180  /* HP_DET */
+                       MX8MQ_IOMUXC_NAND_DATA02_GPIO3_IO8      0x80   /* nWoWWAN */
                >;
        };