target/linux/bcm27xx/patches-5.4/950-0929-overlays-Delete-spi0-hw-cs.patch

   1 From 9fcbc40311f8de3f7a0a27155f310ff19e150d76 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Thu, 30 Jul 2020 18:06:24 +0100
   4 Subject: [PATCH] overlays: Delete spi0-hw-cs
   5
   6 The spi0-hw-cs overlay is unnecessary (and actually harmful) with the
   7 current kernels. Delete it, leaving a note in the README and a
   8 deprecation message from the firmware:
   9
  10     dterror: overlay 'spi0-hw-cs' is deprecated: no longer necessary
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  13 ---
  14  arch/arm/boot/dts/overlays/Makefile           |  1 -
  15  arch/arm/boot/dts/overlays/README             |  6 ++---
  16  arch/arm/boot/dts/overlays/overlay_map.dts    |  4 +++
  17  .../boot/dts/overlays/spi0-hw-cs-overlay.dts  | 26 -------------------
  18  4 files changed, 7 insertions(+), 30 deletions(-)
  19  delete mode 100644 arch/arm/boot/dts/overlays/spi0-hw-cs-overlay.dts
  20
  21 --- a/arch/arm/boot/dts/overlays/Makefile
  22 +++ b/arch/arm/boot/dts/overlays/Makefile
  23 @@ -159,7 +159,6 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  24         spi-gpio40-45.dtbo \
  25         spi-rtc.dtbo \
  26         spi0-cs.dtbo \
  27 -       spi0-hw-cs.dtbo \
  28         spi1-1cs.dtbo \
  29         spi1-2cs.dtbo \
  30         spi1-3cs.dtbo \
  31 --- a/arch/arm/boot/dts/overlays/README
  32 +++ b/arch/arm/boot/dts/overlays/README
  33 @@ -2346,9 +2346,9 @@ Params: cs0_pin                 GPIO pin
  34
  35
  36  Name:   spi0-hw-cs
  37 -Info:   Re-enables hardware CS/CE (chip selects) for SPI0
  38 -Load:   dtoverlay=spi0-hw-cs
  39 -Params: <None>
  40 +Info:   This overlay has been deprecated and removed because it is no longer
  41 +        necessary and has been seen to prevent spi0 from working.
  42 +Load:   <Deprecated>
  43
  44
  45  Name:   spi1-1cs
  46 --- a/arch/arm/boot/dts/overlays/overlay_map.dts
  47 +++ b/arch/arm/boot/dts/overlays/overlay_map.dts
  48 @@ -61,6 +61,10 @@
  49                 deprecated = "use sdio,bus_width=1,gpios_22_25";
  50         };
  51
  52 +       spi0-hw-cs {
  53 +               deprecated = "no longer necessary";
  54 +       };
  55 +
  56         spi3-1cs {
  57                 bcm2711;
  58         };
  59 --- a/arch/arm/boot/dts/overlays/spi0-hw-cs-overlay.dts
  60 +++ /dev/null
  61 @@ -1,26 +0,0 @@
  62 -/*
  63 - * Device tree overlay to re-enable hardware CS for SPI0
  64 - */
  65 -
  66 -/dts-v1/;
  67 -/plugin/;
  68 -
  69 -/ {
  70 -       compatible = "brcm,bcm2835";
  71 -
  72 -       fragment@0 {
  73 -               target = <&spi0>;
  74 -               __overlay__ {
  75 -                       cs-gpios = <0>, <0>;
  76 -                       status = "okay";
  77 -               };
  78 -       };
  79 -
  80 -       fragment@1 {
  81 -               target = <&spi0_cs_pins>;
  82 -               __overlay__ {
  83 -                       brcm,pins = <8 7>;
  84 -                       brcm,function = <4>; /* alt0 */
  85 -               };
  86 -       };
  87 -};