[PATCH 09/10] arm64: dts: zii-ultra: only trigger IRQ on falling edge ucs1002 ALERT pin
From: Lucas Stach <l.stach@pengutronix.de>
Date: 2021-01-26 04:48:17
Also in:
linux-arm-kernel
Subsystem:
arm/freescale imx / mxc arm architecture, the rest · Maintainers:
Frank Li, Sascha Hauer, Linus Torvalds
The ALERT signaling happens on the falling edge of the signal, as rising edge doesn't really have any notion, as it may happen much later (due to shared IRQ line) or too early if the chip resolves the fault itself. So only trigger the IRQ on the edge we are actually interested in. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> --- arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi
index edbde9ed4caf..4dc8383478ee 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi@@ -304,7 +304,7 @@ reg = <0x32>; interrupt-parent = <&gpio3>; interrupts = <17 IRQ_TYPE_EDGE_BOTH>, - <18 IRQ_TYPE_EDGE_BOTH>; + <18 IRQ_TYPE_EDGE_FALLING>; interrupt-names = "a_det", "alert"; };
--
2.20.1