linux-kernel - [PATCH] ipq40xx: fix high resolution timer

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Message-Id: <20190615155020.26922-1-chunkeey@gmail.com>
Date:   Sat, 15 Jun 2019 17:50:20 +0200
From:   Christian Lamparter <chunkeey@...il.com>
To:     linux-arm-msm@...r.kernel.org
Cc:     Abhishek Sahu <absahu@...eaurora.org>,
        Andy Gross <agross@...nel.org>,
        David Brown <david.brown@...aro.org>,
        linux-kernel@...r.kernel.org, Pavel Kubelun <be.dissent@...il.com>
Subject: [PATCH] ipq40xx: fix high resolution timer

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

Cherry-picked from CAF QSDK repo with Change-Id
I7c00b3c74d97c2a30ac9f05e18b511a0550fd459.

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>
---
 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 83eb5c29274b..c7fa9f61e1f1 100644
--- a/arch/arm/boot/dts/qcom-ipq4019.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq4019.dtsi
@@ -165,6 +165,7 @@
 			     <1 4 0xf08>,
 			     <1 1 0xf08>;
 		clock-frequency = <48000000>;
+		always-on;
 	};
 
 	soc {
-- 
2.20.1