[U-Boot] [PATCH v3 08/11] dm: imx: Use gpio_request() to request GPIOs

[Nikita Kiryanov]

Hi Simon,

On 17/09/14 18:02, Simon Glass wrote:
> GPIOs should be requested before use. Without this, driver model will not
> permit the GPIO to be used.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>

This patch introduces a bunch of errors (once the driver model stuff is
turned on), all related to the gpios never being freed, but requested
anew when reinitializing subsystems.

The errors are:

CM-FX6 # sata init
Warning: iSSD setup failed!
AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl SATA mode
flags: ncq stag pm led clo only pmp pio slum part
SATA Device Info:
S/N: 123900127157
Product model number: SanDisk SSD i100 8GB
Firmware version: 11.56.00
Capacity: 15649200 sectors

CM-FX6 # usb start
(Re)start USB...
USB0:   USB OTG pwr gpio request failed: -16
USB OTG pwr gpio request failed: -16
USB EHCI 1.00
scanning bus 0 for devices... 2 USB Device(s) found
USB1:   USB hub rst gpio request failed: -16
USB hub rst gpio request failed: -16
USB EHCI 1.00
scanning bus 1 for devices... 6 USB Device(s) found
        scanning usb for storage devices... max USB Storage Device 
reached: 5 stopping
5 Storage Device(s) found

CM-FX6 # sf probe
mxc_spi: cannot setup gpio -16
SF: Failed to set up slave
Failed to initialize SPI flash at 0:0

CM-FX6 # saveenv
Saving Environment to SPI Flash...
mxc_spi: cannot setup gpio -16
SF: Failed to set up slave
*** Warning - spi_flash_probe() failed, using default environment

I am going to submit a modified version of the cm_fx6 patches to address
these problems.

-- 
Regards,
Nikita Kiryanov