linux-kernel - [PATCH] ARM: dts: rk3288: add arm,cpu-registers-not-fw-configured

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Message-Id: <1416941640-324-1-git-send-email-sonnyrao@chromium.org>
Date:	Tue, 25 Nov 2014 10:54:00 -0800
From:	Sonny Rao <sonnyrao@...omium.org>
To:	Heiko Stuebner <heiko@...ech.de>
Cc:	linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	dianders@...omium.org, olof@...om.net,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Kever Yang <kever.yang@...k-chips.com>,
	eddie.cai@...k-chips.com, Sonny Rao <sonnyrao@...omium.org>
Subject: [PATCH] ARM: dts: rk3288: add arm,cpu-registers-not-fw-configured

This will enable use of physical arch timers on rk3288, where each
core comes out of reset with a different virtual offset.  Using
physical timers will help with SMP booting on coreboot and older
u-boot and should also allow suspend-resume and cpu-hotplug to work on
all firmwares.

Firmware which does initialize the cpu registers properly at boot and
cpu-hotplug can remove this property from the device tree.

Signed-off-by: Sonny Rao <sonnyrao@...omium.org>
---
 arch/arm/boot/dts/rk3288.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 0f50d5d..c861f52 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -139,6 +139,7 @@
 
 	timer {
 		compatible = "arm,armv7-timer";
+		arm,cpu-registers-not-fw-configured;
 		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
 			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
 			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
-- 
2.1.2

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