From: huang lin <hl@rock-chips.com>
Date: Thu, 17 Aug 2017 02:24:45 +0000 (+0800)
Subject: dt-bindings: sound: add dmicen property in dmic driver
X-Git-Tag: v4.14-rc1~114^2~3^2~21^2~5^2~2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=8c9741b1b91d9fb4f094bfa66f0ae02c9a495f48;p=linux.git

dt-bindings: sound: add dmicen property in dmic driver

there may use enable pin to control dmic start and stop,
so add this property in dt-bindings.

Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/Documentation/devicetree/bindings/sound/dmic.txt b/Documentation/devicetree/bindings/sound/dmic.txt
index a0c58f2a162a..54c8ef6498a8 100644
--- a/Documentation/devicetree/bindings/sound/dmic.txt
+++ b/Documentation/devicetree/bindings/sound/dmic.txt
@@ -5,8 +5,12 @@ This device support generic PDM digital microphone.
 Required properties:
 	- compatible: should be "dmic-codec".
 
+Optional properties:
+	- dmicen-gpios: GPIO specifier for dmic to control start and stop
+
 Example node:
 
 	dmic_codec: dmic@0 {
 		compatible = "dmic-codec";
+		dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
 	};