On i.MX7, the SNVS requires a clock. This is similar to the clock
bound to the SNVS RTC node, but if the SNVS RTC driver isn't enabled,
then SNVS doesn't work, and as such the pwrkey driver doesn't
work (i.e. hangs the kernel, as the clock isn't enabled).
Also see commit ec2a844ef7c1
("ARM: dts: imx7s: add snvs rtc clock")
for a similar fix.
Signed-off-by: André Draszik <git@xxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Cc: "Horia Geantă" <horia.geanta@xxxxxxx>
Cc: Aymen Sghaier <aymen.sghaier@xxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: NXP Linux Team <linux-imx@xxxxxxx>
Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: Anson Huang <Anson.Huang@xxxxxxx>
Cc: Robin Gong <yibin.gong@xxxxxxx>
Cc: linux-crypto@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-input@xxxxxxxxxxxxxxx
---
v2:
* split documentation and i.MX7 dts update into two patches
---
arch/arm/boot/dts/imx7s.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 139ab9b98472..edc8c542da7e 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -611,6 +611,8 @@
compatible = "fsl,sec-v4.0-pwrkey";
regmap = <&snvs>;
interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX7D_SNVS_CLK>;
+ clock-names = "snvs-pwrkey";
linux,keycode = <KEY_POWER>;
wakeup-source;
status = "disabled";
--
2.23.0.rc1
