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4be9947edf
Calling gpio_request() prior to its usage is now mandatory.
This fixes the following GPIO errors:
gpio@20a8000: set_dir_flags: error: gpio GPIO4_16 not reserved
gpio@20a8000: set_dir_flags: error: gpio GPIO4_13 not reserved
gpio@20a8000: set_dir_flags: error: gpio GPIO4_0 not reserved
gpio@20a8000: get_value: error: gpio GPIO4_13 not reserved
gpio@20a8000: get_value: error: gpio GPIO4_0 not reserved
gpio@20a0000: set_dir_flags: error: gpio GPIO2_1 not reserved
gpio@20a0000: set_value: error: gpio GPIO2_1 not reserved
Fixes: 191840ae99 ("ARM: imx: udoo_neo: Enable OF_CONTROL and DM gpio/pin control")
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
How to use U-Boot on MX6Q/DL Udoo boards ---------------------------------------- - Build U-Boot for MX6Q/DL Udoo boards: $ make mrproper $ make udoo_defconfig $ make This will generate the SPL image called SPL and the u-boot.img. - Flash the SPL image into the SD card: sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync - Flash the u-boot.img image into the SD card: sudo dd if=u-boot.img of=/dev/mmcblk0 bs=1k seek=69; sync - Insert the SD card in the board, power it up and U-Boot messages should come up.