From 410d129e8c68b994dee69c89dd8e52931458ff85 Mon Sep 17 00:00:00 2001 From: Rick Chen Date: Thu, 23 Nov 2017 10:22:17 +0800 Subject: [PATCH] dt-bindings: timer: Add andestech atcpit100 timer Add a document to describe Andestech atcpit100 timer and binding information. Signed-off-by: rick Signed-off-by: Rick Chen Reviewed-by: Simon Glass --- doc/device-tree-bindings/timer/atcpit100_timer.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 doc/device-tree-bindings/timer/atcpit100_timer.txt diff --git a/doc/device-tree-bindings/timer/atcpit100_timer.txt b/doc/device-tree-bindings/timer/atcpit100_timer.txt new file mode 100644 index 0000000..620814e --- /dev/null +++ b/doc/device-tree-bindings/timer/atcpit100_timer.txt @@ -0,0 +1,31 @@ +Andestech ATCPIT100 timer +------------------------------------------------------------------ +ATCPIT100 is a generic IP block from Andes Technology, embedded in +Andestech AE3XX, AE250 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 +- clock-frequency : The rate in HZ in input of the Andestech ATCPIT100 timer + +Examples: + +timer0: timer@f0400000 { + compatible = "andestech,atcpit100"; + reg = <0xf0400000 0x1000>; + interrupts = <2 4>; + clock-frequency = <30000000>; +}: -- 2.7.4