"I.MX6UL / i.MX6ULL Development Frequently Asked Questions"
Compiled by Mir Mir Electronics Engineers-based electronic i.MX6UL / i.MX6ULL product (V.10)
4.6 How to configure and debug GPIO?
Answer: The actual hardware circuit customer can determine the specific hardware with which a pin to open the source code kernel /arch/arm/boot/dts/myb-y6ull-14x14.dts.
GPIO: Here the LCD_DATA0 to gpio used:
& iomuxc {
pinctrl-names = "default";
pinctrl-0 = <& pinctrl_hog_1>;
imx6ul-EVK {
pinctrl_hog_1: hoggrp-. 1 {
FSL, pins = <
MX6UL_PAD_UART1_RTS_B__GPIO1_IO19 0x17059 / * SD1 of the CD * /
MX6UL_PAD_JTAG_MOD__GPIO1_IO10 0x17059 / * * a WiFi Module1 Power /
MX6UL_PAD_NAND_CE1_B__GPIO4_IO14 0x17059 / * * the Reset the LTE /
MX6UL_PAD_GPIO1_IO00__ANATOP_OTG1_ID 0x17059 / * ID * OTG1 the USB /
MX6UL_PAD_GPIO1_IO09__GPIO1_IO09 0x1b0b0 / LCD_DISP * * /
MX6UL_PAD_GPIO1_IO02__GPIO1_IO02 0x10b1
MX6UL_PAD_LCD_DATA00__GPIO3_IO05 0x1b0b0 (defined GPIO pin)
......
& LCDIF {
pinctrl-names = "default";
pinctrl-0 = <& pinctrl_lcdif_dat_16bits
& pinctrl_lcdif_ctrl
& pinctrl_lcdif_reset>;
the display = <& display0>;
Status = "Disabled"; (the use to LCD_DATA0 of local disable the swap)
after more good dts modify, compile tool chain can be loaded.
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