linux-kernel - [PATCH v3 2/2] arm64: dts: add sp804 timer node for Hi3660

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Date:   Mon, 22 May 2017 12:52:28 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Wei Xu <xuwei5@...ilicon.com>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Zhangfei Gao <zhangfei.gao@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        Guodong Xu <guodong.xu@...aro.org>,
        Haojian Zhuang <haojian.zhuang@...aro.org>
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v3 2/2] arm64: dts: add sp804 timer node for Hi3660

The Hi3660 SoC comes with the sp804 timer in addition to the
architecture timers. These ones are shutdown when reaching a deep idle
states and a backup timer is needed. The sp804 belongs to another power
domain and can fulfill the purpose of replacing temporarily an
architecture timer when the CPU is idle.

Describe it in the device tree, so it can be enabled at boot time.

Suggested-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Signed-off-by: Leo Yan <leo.yan@...aro.org>
---
 arch/arm64/boot/dts/hisilicon/hi3660.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
index 138fcba..f75c792 100644
--- a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
+++ b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi
@@ -173,6 +173,17 @@
 			#clock-cells = <1>;
 		};
 
+		dual_timer0: timer@...14000 {
+			compatible = "arm,sp804", "arm,primecell";
+			reg = <0x0 0xfff14000 0x0 0x1000>;
+			interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&crg_ctrl HI3660_OSC32K>,
+				 <&crg_ctrl HI3660_OSC32K>,
+				 <&crg_ctrl HI3660_OSC32K>;
+			clock-names = "timer1", "timer2", "apb_pclk";
+		};
+
 		ufs: ufs@...b0000 {
 			compatible = "jedec,ufs-1.1", "hisilicon,hi3660-ufs";
 			reg = <0x0 0xff3b0000 0x0 0x1000>, /* 0: HCI standard */
-- 
1.9.1