Hi,
some kind of weired problem:
some GPIO's can modified via /sysfs others cannot
Working OK
[ 1.553601] imx27-pinctrl 10015000.iomuxc: imx1_pmx_enable, pin 0x9,
function 0, gpio 1, direction 1, oconf 3, iconfa 0, iconfb 0
[ 1.553657] imx27-pinctrl 10015000.iomuxc: write: register 0xf4415004
offset 18 value 0x3
[ 1.553712] imx27-pinctrl 10015000.iomuxc: write: register 0xf441500c
offset 18 value 0x0
[ 1.553766] imx27-pinctrl 10015000.iomuxc: write: register 0xf4415010
offset 18 value 0x0
NOT Working
[ 1.553833] imx27-pinctrl 10015000.iomuxc: imx1_pmx_enable, pin 0xa,
function 0, gpio 1, direction 1, oconf 3, iconfa 0, iconfb 0
[ 1.553889] imx27-pinctrl 10015000.iomuxc: write: register 0xf4415004
offset 20 value 0x3
[ 1.553944] imx27-pinctrl 10015000.iomuxc: write: register 0xf441500c
offset 20 value 0x0
[ 1.553997] imx27-pinctrl 10015000.iomuxc: write: register 0xf4415010
offset 20 value 0x0
GPIOs 0-31, platform/10015000.gpio, 10015000.gpio:
gpio-9 (sysfs ) out hi
gpio-10 (sysfs ) out lo
gpio-12 (sysfs ) out lo
gpio-14 (sysfs ) in hi
gpio-16 (sysfs ) in hi
gpio-24 (green ) out hi
gpio-26 (red ) out lo
gpio-30 (yellow ) out lo
gpio-31 (10024170.usbphy ) out hi
root@gtsir20:~# echo 1 > /sys/class/gpio/gpio10/value
root@gtsir20:~# cat /sys/kernel/debug/gpio
GPIOs 0-31, platform/10015000.gpio, 10015000.gpio:
gpio-9 (sysfs ) out hi
gpio-10 (sysfs ) out lo
gpio-12 (sysfs ) out lo
gpio-14 (sysfs ) in hi
gpio-16 (sysfs ) in hi
gpio-24 (green ) out hi
gpio-26 (red ) out lo
gpio-30 (yellow ) out lo
gpio-31 (10024170.usbphy ) out hi
pinctrl_userio1: userio1-1 {
fsl,pins = <
/* 2x GPIO in */
/* MX27_PAD_LD8__GPIO1_14 (in) */
/* MX27_PAD_LD10__GPIO1_16 (in) */
0x0e 0x032 0x0
0x10 0x032 0x0
/* 3x GPIO out */
/* UHF Enable */
MX27_PAD_LD3__GPIO1_9 0x0
MX27_PAD_LD4__GPIO1_10 0x0
MX27_PAD_LD6__GPIO1_12 0x0
/*
LED 1,2,3
*/
MX27_PAD_PS__GPIO1_26 0x0
MX27_PAD_CONTRAST__GPIO1_30 0x0
MX27_PAD_REV__GPIO1_24 0x0
...
I review the pinctrl code but cannot find the problem.
Help needed.
Thanks
Chris
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