linux-kernel - [PATCH v2 2/2] devicetree: i2c-hid: Add reset property

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Message-Id: <1509418996-25348-2-git-send-email-hl@rock-chips.com>
Date:   Tue, 31 Oct 2017 11:03:16 +0800
From:   Lin Huang <hl@...k-chips.com>
To:     dmitry.torokhov@...il.com, jikos@...nel.org, robh@...nel.org
Cc:     benjamin.tissoires@...hat.com, jani.nikula@...el.com,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        briannorris@...omium.org, devicetree@...r.kernel.org,
        Lin Huang <hl@...k-chips.com>
Subject: [PATCH v2 2/2] devicetree: i2c-hid: Add reset property

Document a "reset" and "assert-reset-us", it can be used for
driver control reset property. And reuse post-power-on-delay-ms
for deassert reset delay.

Signed-off-by: Lin Huang <hl@...k-chips.com>
---
 Documentation/devicetree/bindings/input/hid-over-i2c.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.txt b/Documentation/devicetree/bindings/input/hid-over-i2c.txt
index 28e8bd8..6ab0eed 100644
--- a/Documentation/devicetree/bindings/input/hid-over-i2c.txt
+++ b/Documentation/devicetree/bindings/input/hid-over-i2c.txt
@@ -31,7 +31,9 @@ device-specific compatible properties, which should be used in addition to the
 
 - vdd-supply: phandle of the regulator that provides the supply voltage.
 - post-power-on-delay-ms: time required by the device after enabling its regulators
-  before it is ready for communication. Must be used with 'vdd-supply'.
+  or deassert reset pin before it is ready for communication.
+- reset: phandle of the gpio that provides for hid reset pin.
+- assert-reset-us: the device require reset assert time.
 
 Example:
 
-- 
2.7.4