From: Marcel Ziswiler <marcel@ziswiler.com>
To: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com,
Marcel Ziswiler <marcel.ziswiler@toradex.com>,
Fabio Estevam <festevam@gmail.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Rob Herring <robh+dt@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>
Subject: [PATCH v1 1/4] ARM: dts: colibri-imx6: improve wake-up with gpio key
Date: Mon, 9 Jan 2023 14:19:58 +0100 [thread overview]
Message-ID: <20230109132001.43489-2-marcel@ziswiler.com> (raw)
In-Reply-To: <20230109132001.43489-1-marcel@ziswiler.com>
From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
The pin GPIO2_IO22 externally pulls down, it is required to sequentially
connect this pin (signal WAKE_MICO#) to +3v3 and then disconnect it to
trigger a wakeup interrupt.
Adding the flag GPIO_PULL_DOWN allows the system to be woken up just
connecting the pin GPIO2_IO22 to +3v3.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
---
arch/arm/boot/dts/imx6qdl-colibri.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
index d8f985f297e4..9abce6bc6dd4 100644
--- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
@@ -38,7 +38,7 @@ gpio-keys {
wakeup {
debounce-interval = <10>;
- gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>; /* SODIMM 45 */
+ gpios = <&gpio2 22 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>; /* SODIMM 45 */
label = "Wake-Up";
linux,code = <KEY_WAKEUP>;
wakeup-source;
--
2.35.1
next prev parent reply other threads:[~2023-01-09 13:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-09 13:19 [PATCH v1 0/4] ARM/arm64: apalis/colibri-imx6/6ull/7/verdin-imx8mp: gpio-key node names Marcel Ziswiler
2023-01-09 13:19 ` Marcel Ziswiler [this message]
2023-01-09 13:19 ` [PATCH v1 2/4] ARM: dts: colibri-imx6ull: improve wake-up with gpio key Marcel Ziswiler
2023-01-09 13:20 ` [PATCH v1 3/4] ARM: dts: apalis/colibri-imx6/6ull/7: proper gpio-key node names Marcel Ziswiler
2023-01-09 13:20 ` [PATCH v1 4/4] arm64: dts: verdin-imx8mp: unify gpio-key node name Marcel Ziswiler
2023-01-26 0:27 ` [PATCH v1 0/4] ARM/arm64: apalis/colibri-imx6/6ull/7/verdin-imx8mp: gpio-key node names Shawn Guo
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