linux-kernel - [v4,1/4] dt-binding: reset-controller: ti: add reset-duration-us property

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Message-ID: <20200817030324.5690-2-crystal.guo@mediatek.com>
Date:   Mon, 17 Aug 2020 11:03:21 +0800
From:   Crystal Guo <crystal.guo@...iatek.com>
To:     <p.zabel@...gutronix.de>, <robh+dt@...nel.org>,
        <matthias.bgg@...il.com>
CC:     <srv_heupstream@...iatek.com>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <s-anna@...com>, <afd@...com>, <seiya.wang@...iatek.com>,
        <stanley.chu@...iatek.com>, <yingjoe.chen@...iatek.com>,
        <fan.chen@...iatek.com>, <yong.liang@...iatek.com>,
        Crystal Guo <crystal.guo@...iatek.com>
Subject: [v4,1/4] dt-binding: reset-controller: ti: add reset-duration-us property

introduce 'reset' method to allow device do serialized assert and
deassert operations in a single step, which needs a minimum delay
to be waited between assert and deassert.

Signed-off-by: Crystal Guo <crystal.guo@...iatek.com>
---
 Documentation/devicetree/bindings/reset/ti-syscon-reset.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/reset/ti-syscon-reset.txt b/Documentation/devicetree/bindings/reset/ti-syscon-reset.txt
index 86945502ccb5..ab041032339b 100644
--- a/Documentation/devicetree/bindings/reset/ti-syscon-reset.txt
+++ b/Documentation/devicetree/bindings/reset/ti-syscon-reset.txt
@@ -59,6 +59,11 @@ Required properties:
 Please also refer to Documentation/devicetree/bindings/reset/reset.txt for
 common reset controller usage by consumers.
 
+Optional properties:
+- reset-duration-us: When do serialized assert and deassert operations, minimum delay in microseconds
+is needed to be waited between an assert and a deassert to reset the device. This value can be 0, 0 means
+that such a delay is not needed.
+
 Example:
 --------
 The following example demonstrates a syscon node, the reset controller node
-- 
2.18.0