ARM: dts: r8a7779: Add device node for ARM global timer

Add a device node for the global timer, which is part of the Cortex-A9
MPCore.

The global timer can serve as an accurate (4 ns) clock source for
scheduling and delay loops.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20191211135222.26770-4-geert+renesas@glider.be

diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi
index ebf5b7c..6334163 100644 (file)
--- a/arch/arm/boot/dts/r8a7779.dtsi
+++ b/arch/arm/boot/dts/r8a7779.dtsi
@@ -68,6 +68,14 @@
                      <0xf0000100 0x100>;
        };
 
+       timer@f0000200 {
+               compatible = "arm,cortex-a9-global-timer";
+               reg = <0xf0000200 0x100>;
+               interrupts = <GIC_PPI 11
+                       (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>;
+               clocks = <&cpg_clocks R8A7779_CLK_ZS>;
+       };
+
        timer@f0000600 {
                compatible = "arm,cortex-a9-twd-timer";
                reg = <0xf0000600 0x20>;