[PATCH V5 25/30] dt-bindings: timer: C-SKY Multi-processor timer

From: Guo Ren <ren_guo@c-sky.com>
To: akpm@linux-foundation.org, arnd@arndb.de,
	daniel.lezcano@linaro.org, davem@davemloft.net,
	gregkh@linuxfoundation.org, jason@lakedaemon.net,
	marc.zyngier@arm.com, mark.rutland@arm.com,
	mchehab+samsung@kernel.org, peterz@infradead.org,
	robh@kernel.org, robh+dt@kernel.org, tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
	devicetree@vger.kernel.org, green.hu@gmail.com,
	palmer@sifive.com, Guo Ren <ren_guo@c-sky.com>
Subject: [PATCH V5 25/30] dt-bindings: timer: C-SKY Multi-processor timer
Date: Tue, 25 Sep 2018 07:39:28 +0800	[thread overview]
Message-ID: <d8f95c8a3be94d29611eccbeac51a3b74e5f570e.1537789737.git.ren_guo@c-sky.com> (raw)
In-Reply-To: <a23b652c2ab55b129f729a57ec765550da1d2c16.1537789737.git.ren_guo@c-sky.com>
In-Reply-To: <cover.1537789736.git.ren_guo@c-sky.com>

 - Dt-bingdings doc for C-SKY SMP system setting.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
---
 .../devicetree/bindings/timer/csky,mptimer.txt     | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/csky,mptimer.txt

diff --git a/Documentation/devicetree/bindings/timer/csky,mptimer.txt b/Documentation/devicetree/bindings/timer/csky,mptimer.txt
new file mode 100644
index 0000000..1e7e31d
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/csky,mptimer.txt
@@ -0,0 +1,46 @@
+============================
+C-SKY Multi-processors Timer
+============================
+
+C-SKY multi-processors timer is designed for C-SKY SMP system and the
+regs is accessed by cpu co-processor 4 registers with mtcr/mfcr.
+
+ - PTIM_CTLR "cr<0, 14>" Control reg to start reset timer.
+ - PTIM_TSR  "cr<1, 14>" Interrupt cleanup status reg.
+ - PTIM_CCVR "cr<3, 14>" Current counter value reg.
+ - PTIM_LVR  "cr<6, 14>" Window value reg to triger next event.
+
+==============================
+timer node bindings definition
+==============================
+
+	Description: Describes SMP timer
+
+	PROPERTIES
+
+	- compatible
+		Usage: required
+		Value type: <string>
+		Definition: must be "csky,mptimer"
+	- clocks
+		Usage: required
+		Value type: <node>
+		Definition: must be input clk node
+	- interrupts
+		Usage: required
+		Value type: <u32>
+		Definition: must be timer irq num defined by soc
+	- interrupt-parent:
+		Usage: required
+		Value type: <node>
+		Definition: must be interrupt controller node
+
+Examples:
+---------
+
+	timer: timer {
+		compatible = "csky,mptimer";
+		clocks = <&dummy_apb_clk>;
+		interrupts = <16>;
+		interrupt-parent = <&intc>;
+	};
-- 
2.7.4

