Whether can GPIO bind a pinctrl-single device?

Hello,

I fond pinctrl-single device in Xilinx document. So I want to use it bind a GPIO pin, and then control the pinctrl device. But I don't know whether this way is right.

if you know please tell me. Thank you!!

Best regards,

Aersean

0 jafoste4 over 8 years ago

Hello Aersean,
Could you please refer me to the xilinx document in which you found the pinctrl-single device.
--Josh
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0 aersean over 8 years ago in reply to jafoste4

Hello Josh,
Thank you at first.
I was task for BPS, and I have never worked for device tree before. I only read some user guide for device tree, so I am a beginner for this.
Now we have a new project that is research the ZYNQ-7000 serial. I have a PicoZed-7030 development board. I read the Xapp-1078. In this document, the CPU1 can't directly access GPIO ps pin (share resource). So I want to add a device into Petalinux, and access the GPIO ps pin.
Last time, you give me some help for LED, it is success. In fact, I think we maybe need a general GPIO ps pin controller, so I found pinctrl-single device. I hope use it can control GPIO ps pin input/output and get the interrupt when the level is changed.
The document for pinctrl-single is:
https://github.com/Xilinx/linux-xlnx/blob/master/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt

Thanks for your help!!
Best regards,
Aersean
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0 jafoste4 over 8 years ago

Hello Aersean,
You may find more success asking this quesion over at the xilinx embedded linux forum.
https://forums.xilinx.com/t5/Embedded-Linux/bd-p/ELINUX
In the mean time here are some resources for you to start with:
https://forums.xilinx.com/t5/Embedded-Linux/Accessing-PS-GPIO-through-Petalinux/m-p/679232/highlight/true#M15253
https://forums.xilinx.com/t5/Embedded-Linux/Test-zynq702-gpio-on-ps/m-p/259680/highlight/true#M4581
https://forums.xilinx.com/t5/Embedded-Linux/Zynq-PS-interrupt/m-p/516363/highlight/true#M10450
--Josh
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0 aersean over 8 years ago

Hello Josh,

Thank you. I will reseach it again. If you have some suggestion please tell me.

BR
Aersean
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