Re: [PATCHv2 1/3] dt-bindings: document the CEC GPIO bindings
From: Hans Verkuil <hidden>
Date: 2017-08-16 07:20:37
Also in:
dri-devel, linux-media
On 08/10/2017 10:33 AM, Hans Verkuil wrote:
From: Hans Verkuil <redacted> Document the bindings for the cec-gpio module for hardware where the CEC pin is connected to a GPIO pin.
No need to review this, there will be a v3 that will add a second optional HPD gpio. Regards, Hans
quoted hunk
Signed-off-by: Hans Verkuil <redacted> --- Documentation/devicetree/bindings/media/cec-gpio.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/cec-gpio.txtdiff --git a/Documentation/devicetree/bindings/media/cec-gpio.txt b/Documentation/devicetree/bindings/media/cec-gpio.txt new file mode 100644 index 000000000000..e34a175468e2 --- /dev/null +++ b/Documentation/devicetree/bindings/media/cec-gpio.txt@@ -0,0 +1,16 @@ +* HDMI CEC GPIO-based hardware + +Use these bindings for HDMI CEC hardware where the CEC pin is hooked up +to a pull-up GPIO pin. + +Required properties: + - compatible: value must be "cec-gpio" + - gpio: gpio that the CEC line is connected to + +Example for the Raspberry Pi 3 where the CEC line is connected to +pin 7 aka BCM4 aka GPCLK0 on the GPIO pin header: + +cec-gpio { + compatible = "cec-gpio"; + gpio = <&gpio 4 GPIO_ACTIVE_HIGH>; +};
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