Commit c755e398 authored by Michal Piekos's avatar Michal Piekos Committed by Chen-Yu Tsai
Browse files

arm64: dts: allwinner: enable h616 timer support 



Add support for timer by reusing existing sun4i timer driver.

H616 timer is compatible with earlier sunxi timer variants and provides
both clocksource and clockevent functionality. It runs from 24 MHz
oscillator. It can serve as broadcast clockevent for wake up from idle
states.

Tested on Orange Pi Zero 3:
- timer is registered as clocksource:
- switching clocksource at runtime works
- timer operates as a broadcast clockevent device
- no regression observed compared to arch_sys_counter

Signed-off-by: default avatarMichal Piekos <michal.piekos@mmpsystems.pl>
Reviewed-by: default avatarJernej Skrabec <jernej.skrabec@gmail.com>
Link: https://patch.msgid.link/20260329-h616-timer-v1-1-5966d0420a66@mmpsystems.pl


Signed-off-by: default avatarChen-Yu Tsai <wens@kernel.org>
parent 2e4858d2

arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi

+9 −0
Original line number Diff line number Diff line
@@ -228,6 +228,15 @@ cpu_speed_grade: cpu-speed-grade@0 { 
			};

		};



		timer0: timer@3009000 {

			compatible = "allwinner,sun50i-h616-timer",

				     "allwinner,sun8i-a23-timer";

			reg = <0x03009000 0xa0>;

			interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>,

				     <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;

			clocks = <&osc24M>;

		};



		watchdog: watchdog@30090a0 {

			compatible = "allwinner,sun50i-h616-wdt",

				     "allwinner,sun6i-a31-wdt";