i.MX Processors中的主题 SC_P_SCU_GPIO0_00 not working

SC_P_SCU_GPIO0_00 not working

ahmed_bekhet — Thu, 22 Aug 2019 08:57:07 GMT

Hello all,

I have a question regarding SC_P_SCU_GPIO0_00, did someone try to use it as a LSIO_GPIO?

I tried to use it as following

SC_P_SCU_GPIO0_00_LSIO_GPIO2_IO03 0x06000060 /* WAKEUP_TRIG */

GPIO2_I03 {
gpio-export,name = "WAKEUP_GPIO";
gpio-export,direction_may_change = <0>;
gpio-export,input = <0>;
gpios = <&gpio2 3 0>;
};

it appears in sys/class/gpio but always reads low, I tried configuring it as output and drove it high but when I measured the voltage on the pin it was 0 V. I am trying to eliminate the possibility of this being a common problem that people faced with this particular pin. Did someone try to use it before and was successful in doing so?

Re: SC_P_SCU_GPIO0_00 not working

igorpadykov — Fri, 23 Aug 2019 06:18:26 GMT

Hi Ahmed

one can try settings as in fsl-imx8qxp-mek.dtsi pinctrl_hog: hoggrp MCLK_OUT0, "GPIORHB":

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

and use latest L4.14.98 with all patches

i.MX Software | NXP

linux-imx - i.MX Linux kernel

Best regards
igor
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