target/linux/brcm2708/patches-3.18/0078-Add-pps-gpio-DT-overlay.patch

   1 From 4cd9d10a9cd482e993dcfe3bd1d576ad0d11c3c3 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Mon, 26 Jan 2015 09:18:24 +0000
   4 Subject: [PATCH 078/114] Add pps-gpio DT overlay
   5
   6 Parameters:
   7     gpiopin=<input pin>    // Default 18
   8 ---
   9  arch/arm/boot/dts/Makefile             |  1 +
  10  arch/arm/boot/dts/pps-gpio-overlay.dts | 34 ++++++++++++++++++++++++++++++++++
  11  2 files changed, 35 insertions(+)
  12  create mode 100644 arch/arm/boot/dts/pps-gpio-overlay.dts
  13
  14 diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
  15 index 4e1ec2d..4d1224b 100644
  16 --- a/arch/arm/boot/dts/Makefile
  17 +++ b/arch/arm/boot/dts/Makefile
  18 @@ -62,6 +62,7 @@ dtb-$(CONFIG_BCM2708_DT) += hifiberry-amp-overlay.dtb
  19  dtb-$(CONFIG_BCM2708_DT) += iqaudio-dac-overlay.dtb
  20  dtb-$(CONFIG_BCM2708_DT) += iqaudio-dacplus-overlay.dtb
  21  dtb-$(CONFIG_BCM2708_DT) += lirc-rpi-overlay.dtb
  22 +dtb-$(CONFIG_BCM2708_DT) += pps-gpio-overlay.dtb
  23  dtb-$(CONFIG_BCM2708_DT) += w1-gpio-overlay.dtb
  24  dtb-$(CONFIG_BCM2708_DT) += w1-gpio-pullup-overlay.dtb
  25  dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
  26 diff --git a/arch/arm/boot/dts/pps-gpio-overlay.dts b/arch/arm/boot/dts/pps-gpio-overlay.dts
  27 new file mode 100644
  28 index 0000000..40bf0e1
  29 --- /dev/null
  30 +++ b/arch/arm/boot/dts/pps-gpio-overlay.dts
  31 @@ -0,0 +1,34 @@
  32 +/dts-v1/;
  33 +/plugin/;
  34 +
  35 +/ {
  36 +       compatible = "brcm,bcm2708";
  37 +       fragment@0 {
  38 +               target-path = "/";
  39 +               __overlay__ {
  40 +                       pps: pps {
  41 +                               compatible = "pps-gpio";
  42 +                               pinctrl-names = "default";
  43 +                               pinctrl-0 = <&pps_pins>;
  44 +                               gpios = <&gpio 18 0>;
  45 +                               status = "okay";
  46 +                       };
  47 +               };
  48 +       };
  49 +
  50 +       fragment@1 {
  51 +               target = <&gpio>;
  52 +               __overlay__ {
  53 +                       pps_pins: pps_pins {
  54 +                               brcm,pins =     <18>;
  55 +                               brcm,function = <0>;    // in
  56 +                               brcm,pull =     <0>;    // off
  57 +                       };
  58 +               };
  59 +       };
  60 +
  61 +       __overrides__ {
  62 +               gpiopin = <&pps>,"gpios:4",
  63 +                         <&pps_pins>,"brcm,pins:0";
  64 +       };
  65 +};
  66 --
  67 1.8.3.2
  68