target/linux/brcm2708/patches-4.4/0556-BCM270X_DT-Add-overlay-for-enc28j60-on-SPI2.patch

   1 From ea006f68522d82b294094fd29585b16290758d29 Mon Sep 17 00:00:00 2001
   2 From: Alan Yiding Wang <y2366wan@uwaterloo.ca>
   3 Date: Sat, 3 Dec 2016 23:22:02 -0500
   4 Subject: [PATCH] BCM270X_DT: Add overlay for enc28j60 on SPI2
   5
   6 Works on SPI2 for compute module
   7 ---
   8  arch/arm/boot/dts/overlays/Makefile                |  1 +
   9  arch/arm/boot/dts/overlays/README                  | 10 ++++-
  10  .../boot/dts/overlays/enc28j60-spi2-overlay.dts    | 47 ++++++++++++++++++++++
  11  3 files changed, 57 insertions(+), 1 deletion(-)
  12  create mode 100644 arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
  13
  14 --- a/arch/arm/boot/dts/overlays/Makefile
  15 +++ b/arch/arm/boot/dts/overlays/Makefile
  16 @@ -28,6 +28,7 @@ dtbo-$(RPI_DT_OVERLAYS) += dpi24.dtbo
  17  dtbo-$(RPI_DT_OVERLAYS) += dwc-otg.dtbo
  18  dtbo-$(RPI_DT_OVERLAYS) += dwc2.dtbo
  19  dtbo-$(RPI_DT_OVERLAYS) += enc28j60.dtbo
  20 +dtbo-$(RPI_DT_OVERLAYS) += enc28j60-spi2.dtbo
  21  dtbo-$(RPI_DT_OVERLAYS) += gpio-ir.dtbo
  22  dtbo-$(RPI_DT_OVERLAYS) += gpio-poweroff.dtbo
  23  dtbo-$(RPI_DT_OVERLAYS) += hifiberry-amp.dtbo
  24 --- a/arch/arm/boot/dts/overlays/README
  25 +++ b/arch/arm/boot/dts/overlays/README
  26 @@ -344,12 +344,20 @@ Params: dr_mode                 Dual rol
  27
  28
  29  Name:   enc28j60
  30 -Info:   Overlay for the Microchip ENC28J60 Ethernet Controller (SPI)
  31 +Info:   Overlay for the Microchip ENC28J60 Ethernet Controller on SPI0
  32  Load:   dtoverlay=enc28j60,<param>=<val>
  33  Params: int_pin                 GPIO used for INT (default 25)
  34
  35          speed                   SPI bus speed (default 12000000)
  36
  37 +
  38 +Name:   enc28j60-spi2
  39 +Info:   Overlay for the Microchip ENC28J60 Ethernet Controller on SPI2
  40 +Load:   dtoverlay=enc28j60-spi2,<param>=<val>
  41 +Params: int_pin                 GPIO used for INT (default 39)
  42 +
  43 +        speed                   SPI bus speed (default 12000000)
  44 +
  45
  46  Name:   gpio-ir
  47  Info:   Use GPIO pin as rc-core style infrared receiver input. The rc-core-
  48 --- /dev/null
  49 +++ b/arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
  50 @@ -0,0 +1,47 @@
  51 +// Overlay for the Microchip ENC28J60 Ethernet Controller - SPI2 Compute Module
  52 +// Interrupt pin: 39
  53 +/dts-v1/;
  54 +/plugin/;
  55 +
  56 +/ {
  57 +       compatible = "brcm,bcm2708";
  58 +
  59 +       fragment@0 {
  60 +               target = <&spi2>;
  61 +               __overlay__ {
  62 +                       /* needed to avoid dtc warning */
  63 +                       #address-cells = <1>;
  64 +                       #size-cells = <0>;
  65 +
  66 +                       status = "okay";
  67 +
  68 +                       eth1: enc28j60@0{
  69 +                               compatible = "microchip,enc28j60";
  70 +                               reg = <0>; /* CE0 */
  71 +                               pinctrl-names = "default";
  72 +                               pinctrl-0 = <&eth1_pins>;
  73 +                               interrupt-parent = <&gpio>;
  74 +                               interrupts = <39 0x2>; /* falling edge */
  75 +                               spi-max-frequency = <12000000>;
  76 +                               status = "okay";
  77 +                       };
  78 +               };
  79 +       };
  80 +
  81 +       fragment@1 {
  82 +               target = <&gpio>;
  83 +               __overlay__ {
  84 +                       eth1_pins: eth1_pins {
  85 +                               brcm,pins = <39>;
  86 +                               brcm,function = <0>; /* in */
  87 +                               brcm,pull = <0>; /* none */
  88 +                       };
  89 +               };
  90 +       };
  91 +
  92 +       __overrides__ {
  93 +               int_pin = <&eth1>, "interrupts:0",
  94 +                         <&eth1_pins>, "brcm,pins:0";
  95 +               speed   = <&eth1>, "spi-max-frequency:0";
  96 +       };
  97 +};