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    Subject[PATCH v3 14/16] arm64: dts: freescale: sl28: map GPIOs to input events
    Date
    Now that we have support for GPIO lines of the SMARC connector, map the
    sleep, power and lid switch signals to the corresponding keys using the
    gpio-keys and gpio-keys-polled drivers. The power and sleep signals have
    dedicated interrupts, thus we use these ones. The lid switch is just
    mapped to a GPIO input and needs polling.

    Signed-off-by: Michael Walle <michael@walle.cc>
    ---
    .../freescale/fsl-ls1028a-kontron-sl28.dts | 32 +++++++++++++++++++
    1 file changed, 32 insertions(+)

    diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
    index b73794d57db4..263ce50b0b79 100644
    --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
    +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
    @@ -9,6 +9,8 @@
    /dts-v1/;
    #include "fsl-ls1028a.dtsi"
    #include <dt-bindings/interrupt-controller/irq.h>
    +#include <dt-bindings/gpio/gpio.h>
    +#include <dt-bindings/input/input.h>

    / {
    model = "Kontron SMARC-sAL28";
    @@ -23,6 +25,36 @@
    spi1 = &dspi2;
    };

    + buttons0 {
    + compatible = "gpio-keys";
    +
    + power-button {
    + interrupts-extended = <&sl28cpld
    + 4 IRQ_TYPE_EDGE_BOTH>;
    + linux,code = <KEY_POWER>;
    + label = "Power";
    + };
    +
    + sleep-button {
    + interrupts-extended = <&sl28cpld
    + 5 IRQ_TYPE_EDGE_BOTH>;
    + linux,code = <KEY_SLEEP>;
    + label = "Sleep";
    + };
    + };
    +
    + buttons1 {
    + compatible = "gpio-keys-polled";
    + poll-interval = <200>;
    +
    + lid-switch {
    + linux,input-type = <EV_SW>;
    + linux,code = <SW_LID>;
    + gpios = <&sl28cpld_gpio3 4 GPIO_ACTIVE_LOW>;
    + label = "Lid";
    + };
    + };
    +
    chosen {
    stdout-path = "serial0:115200n8";
    };
    --
    2.20.1
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