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 diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
  15 index 57d60a4..c4186aa 100644
  16 --- a/arch/arm/boot/dts/overlays/Makefile
  17 +++ b/arch/arm/boot/dts/overlays/Makefile
  18 @@ -28,6 +28,7 @@ dtbo-$(RPI_DT_OVERLAYS) += dpi24.dtbo
  19  dtbo-$(RPI_DT_OVERLAYS) += dwc-otg.dtbo
  20  dtbo-$(RPI_DT_OVERLAYS) += dwc2.dtbo
  21  dtbo-$(RPI_DT_OVERLAYS) += enc28j60.dtbo
  22 +dtbo-$(RPI_DT_OVERLAYS) += enc28j60-spi2.dtbo
  23  dtbo-$(RPI_DT_OVERLAYS) += gpio-ir.dtbo
  24  dtbo-$(RPI_DT_OVERLAYS) += gpio-poweroff.dtbo
  25  dtbo-$(RPI_DT_OVERLAYS) += hifiberry-amp.dtbo
  26 diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
  27 index 35c0cec1..4a77ee6 100644
  28 --- a/arch/arm/boot/dts/overlays/README
  29 +++ b/arch/arm/boot/dts/overlays/README
  30 @@ -344,13 +344,21 @@ Params: dr_mode                 Dual role mode: "host", "peripheral" or "otg"
  31
  32
  33  Name:   enc28j60
  34 -Info:   Overlay for the Microchip ENC28J60 Ethernet Controller (SPI)
  35 +Info:   Overlay for the Microchip ENC28J60 Ethernet Controller on SPI0
  36  Load:   dtoverlay=enc28j60,<param>=<val>
  37  Params: int_pin                 GPIO used for INT (default 25)
  38
  39          speed                   SPI bus speed (default 12000000)
  40
  41
  42 +Name:   enc28j60-spi2
  43 +Info:   Overlay for the Microchip ENC28J60 Ethernet Controller on SPI2
  44 +Load:   dtoverlay=enc28j60-spi2,<param>=<val>
  45 +Params: int_pin                 GPIO used for INT (default 39)
  46 +
  47 +        speed                   SPI bus speed (default 12000000)
  48 +
  49 +
  50  Name:   gpio-ir
  51  Info:   Use GPIO pin as rc-core style infrared receiver input. The rc-core-
  52          based gpio_ir_recv driver maps received keys directly to a
  53 diff --git a/arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts b/arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
  54 new file mode 100644
  55 index 0000000..946c9d2
  56 --- /dev/null
  57 +++ b/arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
  58 @@ -0,0 +1,47 @@
  59 +// Overlay for the Microchip ENC28J60 Ethernet Controller - SPI2 Compute Module
  60 +// Interrupt pin: 39
  61 +/dts-v1/;
  62 +/plugin/;
  63 +
  64 +/ {
  65 +       compatible = "brcm,bcm2708";
  66 +
  67 +       fragment@0 {
  68 +               target = <&spi2>;
  69 +               __overlay__ {
  70 +                       /* needed to avoid dtc warning */
  71 +                       #address-cells = <1>;
  72 +                       #size-cells = <0>;
  73 +
  74 +                       status = "okay";
  75 +
  76 +                       eth1: enc28j60@0{
  77 +                               compatible = "microchip,enc28j60";
  78 +                               reg = <0>; /* CE0 */
  79 +                               pinctrl-names = "default";
  80 +                               pinctrl-0 = <&eth1_pins>;
  81 +                               interrupt-parent = <&gpio>;
  82 +                               interrupts = <39 0x2>; /* falling edge */
  83 +                               spi-max-frequency = <12000000>;
  84 +                               status = "okay";
  85 +                       };
  86 +               };
  87 +       };
  88 +
  89 +       fragment@1 {
  90 +               target = <&gpio>;
  91 +               __overlay__ {
  92 +                       eth1_pins: eth1_pins {
  93 +                               brcm,pins = <39>;
  94 +                               brcm,function = <0>; /* in */
  95 +                               brcm,pull = <0>; /* none */
  96 +                       };
  97 +               };
  98 +       };
  99 +
 100 +       __overrides__ {
 101 +               int_pin = <&eth1>, "interrupts:0",
 102 +                         <&eth1_pins>, "brcm,pins:0";
 103 +               speed   = <&eth1>, "spi-max-frequency:0";
 104 +       };
 105 +};
 106 --
 107 2.1.4
 108