linux-kernel - [PATCH] ARM: dts: rockchip: disable arm_global

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Date:   Sun, 15 Apr 2018 12:35:55 +0800
From:   Yaodong Liu <my375229675@...il.com>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Yaodong Liu <my375229675@...il.com>
Subject: [PATCH] ARM: dts: rockchip: disable arm_global_timer for rk3066a

The arm_global_timer provides unstable clock to sched_clock, it will
be selected by default instead of rockchip_timer. The same issue has
been fixed in rk3188.

So we must disable arm_global_timer to get the correct clocksource.

Signed-off-by: Yaodong Liu <my375229675@...il.com>
---
 arch/arm/boot/dts/rk3066a.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi
index 06523ca..1920f93 100644
--- a/arch/arm/boot/dts/rk3066a.dtsi
+++ b/arch/arm/boot/dts/rk3066a.dtsi
@@ -749,3 +749,7 @@
 &emac {
 	compatible = "rockchip,rk3066-emac";
 };
+
+&global_timer {
+	status = "disabled";
+};
-- 
2.7.4