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From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Magnus Damm <magnus.damm@gmail.com>
Cc: linux-renesas-soc@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/4] ARM: dts: r8a7779: Add device node for ARM global timer
Date: Wed, 11 Dec 2019 14:52:21 +0100
Message-ID: <20191211135222.26770-4-geert+renesas@glider.be> (raw)
In-Reply-To: <20191211135222.26770-1-geert+renesas@glider.be>

Add a device node for the global timer, which is part of the Cortex-A9
MPCore.

The global timer can serve as an accurate (4 ns) clock source for
scheduling and delay loops.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v2:
  - No changes.
---
 arch/arm/boot/dts/r8a7779.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi
index ebf5b7cfe21599c6..63341635bddf873f 100644
--- a/arch/arm/boot/dts/r8a7779.dtsi
+++ b/arch/arm/boot/dts/r8a7779.dtsi
@@ -68,6 +68,14 @@
 		      <0xf0000100 0x100>;
 	};
 
+	timer@f0000200 {
+		compatible = "arm,cortex-a9-global-timer";
+		reg = <0xf0000200 0x100>;
+		interrupts = <GIC_PPI 11
+			(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>;
+		clocks = <&cpg_clocks R8A7779_CLK_ZS>;
+	};
+
 	timer@f0000600 {
 		compatible = "arm,cortex-a9-twd-timer";
 		reg = <0xf0000600 0x20>;
-- 
2.17.1


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Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-11 13:52 [PATCH v2 0/4] ARM: shmobile: Enable ARM_GLOBAL_TIMER on Cortex-A9 MPCore Geert Uytterhoeven
2019-12-11 13:52 ` [PATCH v2 1/4] ARM: dts: sh73a0: Rename twd clock to periph clock Geert Uytterhoeven
2019-12-11 13:52 ` [PATCH v2 2/4] ARM: dts: sh73a0: Add device node for ARM global timer Geert Uytterhoeven
2019-12-11 13:52 ` Geert Uytterhoeven [this message]
2019-12-11 13:52 ` [PATCH v2 4/4] ARM: shmobile: Enable ARM_GLOBAL_TIMER on Cortex-A9 MPCore SoCs Geert Uytterhoeven

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