netdev - [PATCH v6 3/3] dt-bindings: timer: Add andestech atcpit100 timer binding doc

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Message-Id: <baa3a7a9392a2a04e791f3e29cb7cd5707fed672.1515766198.git.green.hu@gmail.com>
Date:   Mon, 15 Jan 2018 13:57:31 +0800
From:   Greentime Hu <green.hu@...il.com>
To:     greentime@...estech.com, linux-kernel@...r.kernel.org,
        arnd@...db.de, linux-arch@...r.kernel.org, tglx@...utronix.de,
        jason@...edaemon.net, marc.zyngier@....com, robh+dt@...nel.org,
        netdev@...r.kernel.org, deanbo422@...il.com,
        devicetree@...r.kernel.org, viro@...iv.linux.org.uk,
        dhowells@...hat.com, will.deacon@....com,
        daniel.lezcano@...aro.org, linux-serial@...r.kernel.org,
        geert.uytterhoeven@...il.com, linus.walleij@...aro.org,
        mark.rutland@....com, greg@...ah.com, ren_guo@...ky.com,
        rdunlap@...radead.org, davem@...emloft.net, jonas@...thpole.se,
        stefan.kristiansson@...nalahti.fi, shorne@...il.com
Cc:     Rick Chen <rickchen36@...il.com>, green.hu@...il.com,
        rick@...estech.com
Subject: [PATCH v6 3/3] dt-bindings: timer: Add andestech atcpit100 timer binding doc

From: Rick Chen <rickchen36@...il.com>

Add a document to describe Andestech atcpit100 timer and
binding information.

Signed-off-by: Rick Chen <rickchen36@...il.com>
Signed-off-by: Greentime Hu <green.hu@...il.com>
Acked-by: Rob Herring <robh@...nel.org>
---
 .../bindings/timer/andestech,atcpit100-timer.txt   |   33 ++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/andestech,atcpit100-timer.txt

diff --git a/Documentation/devicetree/bindings/timer/andestech,atcpit100-timer.txt b/Documentation/devicetree/bindings/timer/andestech,atcpit100-timer.txt
new file mode 100644
index 0000000..4c9ea59
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/andestech,atcpit100-timer.txt
@@ -0,0 +1,33 @@
+Andestech ATCPIT100 timer
+------------------------------------------------------------------
+ATCPIT100 is a generic IP block from Andes Technology, embedded in
+Andestech AE3XX platforms and other designs.
+
+This timer is a set of compact multi-function timers, which can be
+used as pulse width modulators (PWM) as well as simple timers.
+
+It supports up to 4 PIT channels. Each PIT channel is a
+multi-function timer and provide the following usage scenarios:
+One 32-bit timer
+Two 16-bit timers
+Four 8-bit timers
+One 16-bit PWM
+One 16-bit timer and one 8-bit PWM
+Two 8-bit timer and one 8-bit PWM
+
+Required properties:
+- compatible	: Should be "andestech,atcpit100"
+- reg		: Address and length of the register set
+- interrupts	: Reference to the timer interrupt
+- clocks 	: a clock to provide the tick rate for "andestech,atcpit100"
+- clock-names 	: should be "PCLK" for the peripheral clock source.
+
+Examples:
+
+timer0: timer@...00000 {
+	compatible = "andestech,atcpit100";
+	reg = <0xf0400000 0x1000>;
+	interrupts = <2>;
+	clocks = <&apb>;
+	clock-names = "PCLK";
+};
-- 
1.7.9.5