target/linux/brcm2708/patches-4.4/0208-BCM270X_DT-Remove-explicit-claiming-of-UART-pins.patch

   1 From 678f08c4c3fd62b5e3cd95cc9596733354b2ba19 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Sat, 19 Mar 2016 16:51:37 +0000
   4 Subject: [PATCH] BCM270X_DT: Remove explicit claiming of UART pins
   5
   6 It is convenient to be able to map a different function to the UART
   7 pins (e.g. DPI for vga666) without having to disable the UART first.
   8
   9 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  10 ---
  11  arch/arm/boot/dts/bcm2710-rpi-3-b.dts              |  6 +++---
  12  .../boot/dts/overlays/pi3-disable-bt-overlay.dts   | 10 ++++-----
  13  .../boot/dts/overlays/pi3-miniuart-bt-overlay.dts  | 25 +++++++++++-----------
  14  3 files changed, 20 insertions(+), 21 deletions(-)
  15
  16 --- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
  17 +++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
  18 @@ -57,9 +57,9 @@
  19         };
  20
  21         uart1_pins: uart1_pins {
  22 -               brcm,pins = <14 15>;
  23 -               brcm,function = <2>; /* alt5=UART1 */
  24 -               brcm,pull = <0 2>;
  25 +               brcm,pins;
  26 +               brcm,function;
  27 +               brcm,pull;
  28         };
  29  };
  30
  31 --- a/arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts
  32 +++ b/arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts
  33 @@ -28,13 +28,11 @@
  34         };
  35
  36         fragment@2 {
  37 -               target = <&gpio>;
  38 +               target = <&uart0_pins>;
  39                 __overlay__ {
  40 -                       uart0_pins: uart0_pins {
  41 -                               brcm,pins = <14 15>;
  42 -                               brcm,function = <4>; /* alt0 */
  43 -                               brcm,pull = <0 2>;
  44 -                       };
  45 +                       brcm,pins;
  46 +                       brcm,function;
  47 +                       brcm,pull;
  48                 };
  49         };
  50
  51 --- a/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
  52 +++ b/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
  53 @@ -37,23 +37,24 @@
  54         };
  55
  56         fragment@2 {
  57 -               target = <&gpio>;
  58 +               target = <&uart0_pins>;
  59                 __overlay__ {
  60 -                       uart0_pins: uart0_pins {
  61 -                               brcm,pins = <14 15>;
  62 -                               brcm,function = <4>; /* alt0 */
  63 -                               brcm,pull = <0 2>;
  64 -                       };
  65 -
  66 -                       uart1_pins: uart1_pins {
  67 -                               brcm,pins = <32 33>;
  68 -                               brcm,function = <2>; /* alt5=UART1 */
  69 -                               brcm,pull = <0 2>;
  70 -                       };
  71 +                       brcm,pins;
  72 +                       brcm,function;
  73 +                       brcm,pull;
  74                 };
  75         };
  76
  77         fragment@3 {
  78 +               target = <&uart1_pins>;
  79 +               __overlay__ {
  80 +                       brcm,pins = <32 33>;
  81 +                       brcm,function = <2>; /* alt5=UART1 */
  82 +                       brcm,pull = <0 2>;
  83 +               };
  84 +       };
  85 +
  86 +       fragment@4 {
  87                 target-path = "/aliases";
  88                 __overlay__ {
  89                         serial0 = "/soc/uart@7e201000";