UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ARM: dts: meson8b: add the Cortex-A5 global timer 

The Meson8b SoC is using four Cortex-A5 cores. These come with an ARM
global timer.
This adds the Cortex-A5 global timer but keeps it disabled for now. The
timer is clocked by the "PERIPH" clock whose rate can change during
runtime (when changing the frequency of the CPU clock). Unfortunately
the arm_global_timer driver does not handle changes to the clock rate
yet.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
This commit is contained in:
Martin Blumenstingl 2018-11-23 20:53:11 +01:00 committed by Kevin Hilman
parent f5506e82f7
commit da38636393
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/arm/boot/dts/meson8b.dtsi
View File

@ -350,6 +350,19 @@
reg = <0x0 0x100>;
};
timer@200 {
compatible = "arm,cortex-a5-global-timer";
reg = <0x200 0x20>;
interrupts = <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>;
clocks = <&clkc CLKID_PERIPH>;
/*
* the arm_global_timer driver currently does not handle clock
* rate changes. Keep it disabled for now.
*/
status = "disabled";
};
timer@600 {
compatible = "arm,cortex-a5-twd-timer";
reg = <0x600 0x20>;