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SubjectApplied "ASoC: davinci-mcasp: Document GPIO support" to the asoc tree
The patch

ASoC: davinci-mcasp: Document GPIO support

has been applied to the asoc tree at

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From 4664b94c98b4f9fdd3845da41d5c65288e59c66c Mon Sep 17 00:00:00 2001
From: Peter Ujfalusi <>
Date: Thu, 3 Jan 2019 16:05:51 +0200
Subject: [PATCH] ASoC: davinci-mcasp: Document GPIO support

McASP pins can be used as GPIO, add optional section to enable GPIO support
for McASP.

Signed-off-by: Peter Ujfalusi <>
Signed-off-by: Mark Brown <>
.../bindings/sound/davinci-mcasp-audio.txt | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
index b279b6072bd5..a58f79f5345c 100644
--- a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
+++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
@@ -45,6 +45,23 @@ Optional properties:
- fck_parent : Should contain a valid clock name which will be used as parent
for the McASP fck

+Optional GPIO support:
+If any McASP pin need to be used as GPIO then the McASP node must have:
+ gpio-controller
+ #gpio-cells = <2>;
+When requesting a GPIO, the first parameter is the PIN index in McASP_P*
+For example to request the AXR2 pin of mcasp8:
+function-gpios = <&mcasp8 2 0>;
+Or to request the ACLKR pin of mcasp8:
+function-gpios = <&mcasp8 29 0>;
+For generic gpio information, please refer to bindings/gpio/gpio.txt

mcasp0: mcasp0@1d00000 {
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