The patch
ASoC: davinci-mcasp: Document GPIO support
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
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Thanks, Mark
From 4664b94c98b4f9fdd3845da41d5c65288e59c66c Mon Sep 17 00:00:00 2001
From: Peter Ujfalusi peter.ujfalusi@ti.com 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 peter.ujfalusi@ti.com Signed-off-by: Mark Brown broonie@kernel.org --- .../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* +registers. +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 + Example:
mcasp0: mcasp0@1d00000 {