From: Geert Uytterhoeven geert+renesas@glider.be
[ Upstream commit 8443ffd1bbd5be74e9b12db234746d12e8ea93e2 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/arm/boot/dts/r8a7779.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi index 0391971..f1c9b2b 100644 --- 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>;