target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch

   1 From 296f6ab3a619b47b6f8d4ac42ec704a700df08b2 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Tue, 8 Mar 2022 12:47:49 +0000
   4 Subject: [PATCH] ARM: dts: bcm2711-rpi-ds: Disable the BCM2835 STC
   5
   6 Although BCM2711 still includes the old BCM2835 system timer, the newer
   7 per-core local timers are preferred because they are more efficient to
   8 access and can generate core-specific interrupts. Make the usage clear
   9 by disabling the driver for the old STC.
  10
  11 See: https://github.com/raspberrypi/firmware/issues/1702
  12
  13 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  14 ---
  15  arch/arm/boot/dts/bcm2711-rpi-ds.dtsi | 4 ++++
  16  1 file changed, 4 insertions(+)
  17
  18 --- a/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
  19 +++ b/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
  20 @@ -203,3 +203,7 @@
  21  &dvp {
  22         status = "disabled";
  23  };
  24 +
  25 +&system_timer {
  26 +       status = "disabled";
  27 +};