diff mbox

[2/4] arm64: dts: rockchip: Arch counter doesn't tick in system suspend

Message ID 1479807866-6957-2-git-send-email-daniel.lezcano@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Daniel Lezcano Nov. 22, 2016, 9:44 a.m. UTC 
From: Brian Norris <briannorris@chromium.org>

The "arm,no-tick-in-suspend" property was introduced to note
implementations where the system counter does not quite follow the ARM
specification that it "must be implemented in an always-on power
domain".

Particularly, RK3399's counter stops ticking when we switch from the
24MHz clock to the 32KHz clock in low-power suspend, so let's mark it as
such.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 1 +
 1 file changed, 1 insertion(+)

Comments

Heiko Stübner Nov. 22, 2016, 3:02 p.m. UTC | #1 
Am Dienstag, 22. November 2016, 10:44:22 schrieb Daniel Lezcano:
> From: Brian Norris <briannorris@chromium.org>
> 
> The "arm,no-tick-in-suspend" property was introduced to note
> implementations where the system counter does not quite follow the ARM
> specification that it "must be implemented in an always-on power
> domain".
> 
> Particularly, RK3399's counter stops ticking when we switch from the
> 24MHz clock to the 32KHz clock in low-power suspend, so let's mark it as
> such.
> 
> Signed-off-by: Brian Norris <briannorris@chromium.org>
> Reviewed-by: Douglas Anderson <dianders@chromium.org>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

not sure if needed, but anyway
Acked-by: Heiko Stuebner <heiko@sntech.de>

> ---
>  arch/arm64/boot/dts/rockchip/rk3399.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index b65c193..d85b651 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> @@ -174,6 +174,7 @@
>  			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW 0>,
>  			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW 0>,
>  			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>;
> +		arm,no-tick-in-suspend;
>  	};
> 
>  	xin24m: xin24m {
diff mbox

Patch

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index b65c193..d85b651 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -174,6 +174,7 @@ 
 			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW 0>,
 			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW 0>,
 			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>;
+		arm,no-tick-in-suspend;
 	};
 
 	xin24m: xin24m {