Set GPIO input pull-down

wangtsungli — Fri, 12 Oct 2018 06:15:49 GMT

Hi Community,

I'm working on i.MX6 Dual Lite sabre-SD.

I'm trying to set gpio to input pull-down.

Here is my settings in dtsi.

MX6QDL_PAD_SD2_CMD__GPIO1_IO11 0x80000000

But this settings will set gpio input pull-high.

How can I set it to input pull-down?

Thanks in advanced!

Re: Set GPIO input pull-down

igorpadykov — Fri, 12 Oct 2018 08:02:16 GMT

Hi tsung

"8" means that pin does not need config according to documentation :

linux/Documentation/devicetree/bindings/pinctrl/fsl,imx-pinctrl.txt

fsl,imx-pinctrl.txt\pinctrl\bindings\devicetree\Documentation - linux-imx - i.MX Linux kernel

so one can remove it and set appropriate pull bits as described in sect.36.4.460 Pad Control Register

(IOMUXC_SW_PAD_CTL_PAD_SD2_CMD) i.MX6DQ Reference Manual

Best regards
igor
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topic Re: Set GPIO input pull-down in i.MX Processors

Set GPIO input pull-down

Re: Set GPIO input pull-down