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Added device tree supporting code and cleaning up code following Codi… #11

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Added device tree supporting code and cleaning up code following Codi… #11

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1 change: 1 addition & 0 deletions arch/arm/boot/dts/overlays/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ dtb-$(RPI_DT_OVERLAYS) += rpi-dac-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += rpi-display-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += rpi-ft5406-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += rpi-proto-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += rpi-power-switch-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += rpi-sense-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += sdhost-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += sdio-overlay.dtb
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10 changes: 10 additions & 0 deletions arch/arm/boot/dts/overlays/README
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Expand Up @@ -570,6 +570,16 @@ Load: dtoverlay=rpi-ft5406
Params: <None>


Name: rpi-power-switch
Info: Raspberry Pi Linux shutdown button driver
Load: dtoverlay=rpi-power-switch,<param>=<val>
Params: gpio_pin GPIO Pin number
{default 22}

mode 0 for pushbutton, 1 for on/off switch
{default button}


Name: rpi-proto
Info: Configures the RPi Proto audio card
Load: dtoverlay=rpi-proto
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39 changes: 39 additions & 0 deletions arch/arm/boot/dts/overlays/rpi-power-switch-overlay.dts
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@@ -0,0 +1,39 @@
// Definitions for rpi-power-switch module
/dts-v1/;
/plugin/;

/ {
compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";

fragment@0 {
target-path = "/";
__overlay__ {
rpi_power_switch: rpi_power_switch {
compatible = "rpi-power-switch";
pinctrl-names = "default";
pinctrl-0 = <&rpi_power_switch_pins>;
gpios = <&gpio 22 0>;
button_mode = <0>;
input;
force;
};
};
};

fragment@1 {
target = <&gpio>;
__overlay__ {
rpi_power_switch_pins: rpi_power_switch_pins {
brcm,pins = <22>;
brcm,function = <0>; // in
brcm,pull = <2>; // pull-up
};
};
};

__overrides__ {
gpio_pin = <&rpi_power_switch>,"gpios:4",
<&rpi_power_switch_pins>,"brcm,pins:0";
mode = <&rpi_power_switch>,"button_mode:0";
};
};
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