linux-kernel - [PATCH] ARM: dts: qcom: ipq4019: fix high resolution timer

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Message-Id: <20200403114040.349787-1-robert.marko@sartura.hr>
Date:   Fri,  3 Apr 2020 13:40:40 +0200
From:   Robert Marko <robert.marko@...tura.hr>
To:     agross@...nel.org, bjorn.andersson@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Abhishek Sahu <absahu@...eaurora.org>,
        Pavel Kubelun <be.dissent@...il.com>,
        Christian Lamparter <chunkeey@...il.com>,
        Robert Marko <robert.marko@...tura.hr>,
        Luka Perkov <luka.perkov@...tura.hr>
Subject: [PATCH] ARM: dts: qcom: ipq4019: fix high resolution timer

From: Abhishek Sahu <absahu@...eaurora.org>

Cherry-picked from CAF QSDK repo.
Original commit message:
The kernel is failing in switching the timer for high resolution
mode and clock source operates in 10ms resolution. The always-on
property needs to be given for timer device tree node to make
clock source working in 1ns resolution.

Signed-off-by: Abhishek Sahu <absahu@...eaurora.org>
Signed-off-by: Pavel Kubelun <be.dissent@...il.com>
Signed-off-by: Christian Lamparter <chunkeey@...il.com>
Tested-by: Robert Marko <robert.marko@...tura.hr>
Cc: Luka Perkov <luka.perkov@...tura.hr>
---
 arch/arm/boot/dts/qcom-ipq4019.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/qcom-ipq4019.dtsi b/arch/arm/boot/dts/qcom-ipq4019.dtsi
index ee45253361cb..b4803a428340 100644
--- a/arch/arm/boot/dts/qcom-ipq4019.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq4019.dtsi
@@ -166,6 +166,7 @@ timer {
 			     <1 4 0xf08>,
 			     <1 1 0xf08>;
 		clock-frequency = <48000000>;
+		always-on;
 	};
 
 	soc {
-- 
2.26.0