The Intel GPIO binding allows GPIOs to be globally numbered, so that it does not matter which GPIO bank is specified in the device tree. This is convenient and avoid confusion since the banks do not have the same number of GPIOs and the numbering is not sequential.
The GPIO uclass ensures that the device mentioned in the devicetree binding is probed. It is fine for the driver to update gpio_desc to point to a different driver, but this may not have been probed. If it has not been, then it cannot be claimed since there is no uclass data.
We could handle this in the GPIO uclass but so far it is an unusual situation so it is probably not worth the extra code. Handle this case in the GPIO driver by probing the selected device if necessary.
Signed-off-by: Simon Glass sjg@chromium.org ---
drivers/gpio/intel_gpio.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
Applied to u-boot-dm/next, thanks!