target/linux/bcm27xx/patches-5.4/950-0719-overlays-tc358743-Use-intra-overlay-fragments.patch

   1 From adf5f2833517758152cbc9032dd93934a1e16ca1 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Mon, 11 May 2020 11:55:45 +0100
   4 Subject: [PATCH] overlays: tc358743: Use intra-overlay fragments
   5
   6 The tc358743 overlay was written using a workaround to a problem with
   7 fragments that target other fragments, but this had the unfortunate
   8 side-effect of preventing the overlay from being applied at runtime
   9 (the kernel doesn't allow nodes to be overwritten by an overlay, only
  10 properties).
  11
  12 The current firmware and dtoverlay/dtparam utilities include support
  13 for these "intra-overlay" fragments, so remove the workaround and do
  14 it properly.
  15
  16 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  17 ---
  18  .../boot/dts/overlays/tc358743-overlay.dts    | 20 ++++---------------
  19  1 file changed, 4 insertions(+), 16 deletions(-)
  20
  21 --- a/arch/arm/boot/dts/overlays/tc358743-overlay.dts
  22 +++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
  23 @@ -54,28 +54,16 @@
  24         };
  25
  26         fragment@2 {
  27 -               target = <&i2c_csi_dsi>;
  28 +               target = <&tc358743>;
  29                 __overlay__ {
  30 -                       tc358743@0f {
  31 -                               port {
  32 -                                       endpoint {
  33 -                                               data-lanes = <1 2>;
  34 -                                       };
  35 -                               };
  36 -                       };
  37 +                       data-lanes = <1 2>;
  38                 };
  39         };
  40
  41         fragment@3 {
  42 -               target = <&i2c_csi_dsi>;
  43 +               target = <&tc358743>;
  44                 __dormant__ {
  45 -                       tc358743@0f {
  46 -                               port {
  47 -                                       endpoint {
  48 -                                               data-lanes = <1 2 3 4>;
  49 -                                       };
  50 -                               };
  51 -                       };
  52 +                       data-lanes = <1 2 3 4>;
  53                 };
  54         };
  55