topic Re: How to set GPIO state in i.MX Processors

How to set GPIO state

xu_ji1 — Sun, 23 Jun 2019 03:57:47 GMT

Hi，

About Yocto project,how to set the GPIO high when system boot on

Please give guide

Thanks

Re: How to set GPIO state

igorpadykov — Sun, 23 Jun 2019 22:44:19 GMT

Hi Xu

one can try to set it using scfw, please check

SCFW Porting Kit

Best regards
igor
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Re: How to set GPIO state

xu_ji1 — Mon, 24 Jun 2019 01:51:16 GMT

Sorry,

I don't want to changed in SCFW ,I want to set it in boot and kernel,it is better in dts

Thanks

Re: How to set GPIO state

igorpadykov — Mon, 24 Jun 2019 05:21:45 GMT

one can look at Porting Guide included in Linux L4.14.98_2.0.0 Documentation

dts example of gpio : pinctrl_pcieb to control PCIe :

fsl-imx8qxp-mek.dtsi\freescale\dts\boot\arm64\arch - linux-imx - i.MX Linux kernel

Best regards
igor