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Diffstat (limited to 'Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt')
-rw-r--r-- | Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt index 46bc9829c71a..a58f79f5345c 100644 --- a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt +++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt @@ -30,6 +30,11 @@ Optional properties: - ti,hwmods : Must be "mcasp<n>", n is controller instance starting 0 - tx-num-evt : FIFO levels. - rx-num-evt : FIFO levels. +- dismod : Specify the drive on TX pin during inactive slots + 0 : 3-state + 2 : logic low + 3 : logic high + Defaults to 'logic low' when the property is not present - sram-size-playback : size of sram to be allocated during playback - sram-size-capture : size of sram to be allocated during capture - interrupts : Interrupt numbers for McASP @@ -40,6 +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 { |