target/linux/brcm2708/patches-4.19/950-0734-overlays-Add-w5500-overlay.patch

   1 From cb9a896a799393b3cb5947bef3c95eb5ffb44776 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Thu, 10 Oct 2019 09:08:47 +0100
   4 Subject: [PATCH] overlays: Add w5500 overlay
   5
   6 Add an overlay to configure the Wiznet W5500 Ethernet controller on
   7 SPI0. The 'cs' parameter chooses the Chip Select (default 0).
   8
   9 See: https://github.com/raspberrypi/linux/issues/3276
  10
  11 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  12 ---
  13  arch/arm/boot/dts/overlays/Makefile          |  1 +
  14  arch/arm/boot/dts/overlays/README            | 10 ++++
  15  arch/arm/boot/dts/overlays/w5500-overlay.dts | 63 ++++++++++++++++++++
  16  3 files changed, 74 insertions(+)
  17  create mode 100644 arch/arm/boot/dts/overlays/w5500-overlay.dts
  18
  19 --- a/arch/arm/boot/dts/overlays/Makefile
  20 +++ b/arch/arm/boot/dts/overlays/Makefile
  21 @@ -183,6 +183,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  22         vga666.dtbo \
  23         w1-gpio.dtbo \
  24         w1-gpio-pullup.dtbo \
  25 +       w5500.dtbo \
  26         wittypi.dtbo
  27
  28  targets += dtbs dtbs_install
  29 --- a/arch/arm/boot/dts/overlays/README
  30 +++ b/arch/arm/boot/dts/overlays/README
  31 @@ -2538,6 +2538,16 @@ Params: gpiopin                 GPIO for
  32          pullup                  Now enabled by default (ignored)
  33
  34
  35 +Name:   w5500
  36 +Info:   Overlay for the Wiznet W5500 Ethernet Controller on SPI0
  37 +Load:   dtoverlay=w5500,<param>=<val>
  38 +Params: int_pin                 GPIO used for INT (default 25)
  39 +
  40 +        speed                   SPI bus speed (default 30000000)
  41 +
  42 +        cs                      SPI bus Chip Select (default 0)
  43 +
  44 +
  45  Name:   wittypi
  46  Info:   Configures the wittypi RTC module.
  47  Load:   dtoverlay=wittypi,<param>=<val>
  48 --- /dev/null
  49 +++ b/arch/arm/boot/dts/overlays/w5500-overlay.dts
  50 @@ -0,0 +1,63 @@
  51 +// Overlay for the Wiznet w5500 Ethernet Controller
  52 +/dts-v1/;
  53 +/plugin/;
  54 +
  55 +/ {
  56 +       compatible = "brcm,bcm2835";
  57 +
  58 +       fragment@0 {
  59 +               target = <&spidev0>;
  60 +               __overlay__ {
  61 +                       status = "disabled";
  62 +               };
  63 +       };
  64 +
  65 +       fragment@1 {
  66 +               target = <&spidev1>;
  67 +               __dormant__ {
  68 +                       status = "disabled";
  69 +               };
  70 +       };
  71 +
  72 +       fragment@2 {
  73 +               target = <&spi0>;
  74 +               __overlay__ {
  75 +                       /* needed to avoid dtc warning */
  76 +                       #address-cells = <1>;
  77 +                       #size-cells = <0>;
  78 +
  79 +                       status = "okay";
  80 +
  81 +                       eth1: w5500@0{
  82 +                               compatible = "wiznet,w5500";
  83 +                               reg = <0>; /* CE0 */
  84 +                               pinctrl-names = "default";
  85 +                               pinctrl-0 = <&eth1_pins>;
  86 +                               interrupt-parent = <&gpio>;
  87 +                               interrupts = <25 0x8>;
  88 +                               spi-max-frequency = <30000000>;
  89 +//                             local-mac-address = [aa bb cc dd ee ff];
  90 +                               status = "okay";
  91 +                       };
  92 +               };
  93 +       };
  94 +
  95 +       fragment@3 {
  96 +               target = <&gpio>;
  97 +               __overlay__ {
  98 +                       eth1_pins: eth1_pins {
  99 +                               brcm,pins = <25>;
 100 +                               brcm,function = <0>; /* in */
 101 +                               brcm,pull = <0>; /* none */
 102 +                       };
 103 +               };
 104 +       };
 105 +
 106 +       __overrides__ {
 107 +               int_pin = <&eth1>, "interrupts:0",
 108 +                         <&eth1_pins>, "brcm,pins:0";
 109 +               speed   = <&eth1>, "spi-max-frequency:0";
 110 +               cs      = <&eth1>, "reg:0",
 111 +                         <0>, "!0=1";
 112 +       };
 113 +};