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authorÁlvaro Fernández Rojas <noltari@gmail.com>2022-05-16 23:40:32 +0200
committerÁlvaro Fernández Rojas <noltari@gmail.com>2022-05-17 15:11:22 +0200
commit20ea6adbf199097c4f5f591ffee088340630dae4 (patch)
treed6719d95e136611a1c25bbf7789652d6d402779d /target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch
parentbca05bd072180dc38ef740b37ded9572a6db1981 (diff)
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bcm27xx: add support for linux v5.15
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch27
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch b/target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch
new file mode 100644
index 0000000000..efe7acafd9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch
@@ -0,0 +1,27 @@
+From 296f6ab3a619b47b6f8d4ac42ec704a700df08b2 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 8 Mar 2022 12:47:49 +0000
+Subject: [PATCH] ARM: dts: bcm2711-rpi-ds: Disable the BCM2835 STC
+
+Although BCM2711 still includes the old BCM2835 system timer, the newer
+per-core local timers are preferred because they are more efficient to
+access and can generate core-specific interrupts. Make the usage clear
+by disabling the driver for the old STC.
+
+See: https://github.com/raspberrypi/firmware/issues/1702
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2711-rpi-ds.dtsi | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
++++ b/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
+@@ -203,3 +203,7 @@
+ &dvp {
+ status = "disabled";
+ };
++
++&system_timer {
++ status = "disabled";
++};