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Date:   Fri, 4 Dec 2020 10:13:40 +0100
From:   Linus Walleij <>
To:     林圣欢 <>
Cc:     khilman <>,
        narmstrong <>,
        jbrunet <>,
        "martin.blumenstingl" <>,
        linux-gpio <>,
        linux-arm-kernel <>,
        linux-amlogic <>,
        linux-kernel <>
Subject: Re: 0001-add-amlogic-gpio-to-irq

Hi Lisheng,

this patch got a bit mangled but I get where you're going.

I think Meson needs to be augmented to use hierarchical gpiolib irqchip
because this seems to be what the system is doing.

So start with drivers/pinctrl/meson/Kconfig and add:


Then use the generic hierarchical gpiolib irqchip as described
in Documentation/driver-api/gpio/driver.rst
git grep child_to_parent_hwirq
for several examples of how to do this.

Linus Walleij

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