[PATCH] ARM: dts: am437x-idk: Configure uart0 padconf wakeirq

From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: "Benoît Cousson"
	<bcousson-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"Dave Gerlach" <d-gerlach-l0cyMroinI0@public.gmane.org>
Subject: [PATCH] ARM: dts: am437x-idk: Configure uart0 padconf wakeirq
Date: Fri,  9 Feb 2018 08:19:13 -0800	[thread overview]
Message-ID: <20180209161913.19542-1-tony@atomide.com> (raw)

We can use CTRL_CONF_UART0_RXD pad as the wakeirq and then
the serial console will work with wake up events.

Note that the uart still needs to be configured for idle
timeouts for PM runtime for the wakeirq to get activated.
That can be done via sysfs to set autosuspend_delay_ms to
3000, wakeup enabled and and control auto.

Cc: Dave Gerlach <d-gerlach-l0cyMroinI0@public.gmane.org>
Signed-off-by: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
---
 arch/arm/boot/dts/am437x-idk-evm.dts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/am437x-idk-evm.dts b/arch/arm/boot/dts/am437x-idk-evm.dts
--- a/arch/arm/boot/dts/am437x-idk-evm.dts
+++ b/arch/arm/boot/dts/am437x-idk-evm.dts
@@ -533,3 +533,9 @@
 		opp-suspend;
 	};
 };
+
+&uart0 {
+	/* UART0 interrupt and CTRL_CONF_UART0_RXD pad as wakeirq */
+	interrupts-extended = <&gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
+			      <&am43xx_pinmux 0x170>;
+};
-- 
2.16.1
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