Commits
Anson Huang committed c380248180c
firmware: imx: scu-pd: Add IRQSTEER wakeup support
To support different wakeup source, Linux kernel needs to call
SCU firmware to assign different wakeup controllers, for those
SCU resources like RTC alarm, ON/OFF button, MU etc., it should
use SCU wakeup controller, for other peripheral resources like
LPUART, CAN, etc., it should use IRQSTERR wakeup controller.
To support this feasure, all devices supporting wakeup should
add its hwirq number to pd node's wakeup-irq property. Below
is the example of adding LPUART0~3 as wakeup source, SCU PD
driver will determine whether IRQSTEER or SCU should be selected
as wakeup controller, this is done by reading GIC distributor's
register and wakeup-irq array to check whether a wakeup source
is enabled in GIC in order to support wakeup.
pd: imx8qx-pd {
compatible = "fsl,imx8qm-scu-pd", "fsl,scu-pd";
#power-domain-cells = <1>;
wakeup-irq = <345 346 347 348>;
};
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>