From 53bdd72c68f0861d57851232c14a5750779b368b Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 4 Jun 2015 13:41:12 +0200 Subject: ARM64: juno: add GPIO keys The Juno board has two keys connected to a PL061 GPIO block, in accordance to DDI0524B "ARM Versatile Express Juno Development Platform" revision 1.0, table 2-4 "GPIO (0) and GPIO (1) used for additional user key entry". By trial-and-error I found that these are connected to the two keys named "power" and "home" on the motherboard. Register the GPIO block and these two keys in the device tree using the PL061 GPIO driver and the generic gpio keys. - Map POWER, HOME, VOL+ and VOL- to the obvious input events. - Map RLOCK to KEY_SCREENLOCK/KEY_COFFEE unless someone can explain better what this is for. - Map the NMI button to KEY_SYSREQ as this is used like so in the SYSREQ debugging hack. Acked-by: Liviu Dudau Signed-off-by: Linus Walleij Signed-off-by: Kevin Hilman --- arch/arm64/boot/dts/arm/juno-motherboard.dtsi | 61 +++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) (limited to 'arch') diff --git a/arch/arm64/boot/dts/arm/juno-motherboard.dtsi b/arch/arm64/boot/dts/arm/juno-motherboard.dtsi index c138b95..caf6a84 100644 --- a/arch/arm64/boot/dts/arm/juno-motherboard.dtsi +++ b/arch/arm64/boot/dts/arm/juno-motherboard.dtsi @@ -40,6 +40,55 @@ regulator-always-on; }; + gpio_keys { + compatible = "gpio-keys"; + #address-cells = <1>; + #size-cells = <0>; + + button@1 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <116>; + label = "POWER"; + gpios = <&iofpga_gpio0 0 0x4>; + }; + button@2 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <102>; + label = "HOME"; + gpios = <&iofpga_gpio0 1 0x4>; + }; + button@3 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <152>; + label = "RLOCK"; + gpios = <&iofpga_gpio0 2 0x4>; + }; + button@4 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <115>; + label = "VOL+"; + gpios = <&iofpga_gpio0 3 0x4>; + }; + button@5 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <114>; + label = "VOL-"; + gpios = <&iofpga_gpio0 4 0x4>; + }; + button@6 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <99>; + label = "NMI"; + gpios = <&iofpga_gpio0 5 0x4>; + }; + }; + ethernet@2,00000000 { compatible = "smsc,lan9118", "smsc,lan9115"; reg = <2 0x00000000 0x10000>; @@ -125,5 +174,17 @@ clocks = <&soc_smc50mhz>; clock-names = "apb_pclk"; }; + + iofpga_gpio0: gpio@1d0000 { + compatible = "arm,pl061", "arm,primecell"; + reg = <0x1d0000 0x1000>; + interrupts = <6>; + clocks = <&soc_smc50mhz>; + clock-names = "apb_pclk"; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + }; }; }; -- cgit v1.1