dm: gpio: Add of-platdata support
Add support for accessing GPIOs using of-plata. This uses the same
mechanism as for clocks, but allows use of the xlate() method so that
the driver can interpret the parameters.
Update the condition for GPIO_HOG so that it is not built into SPL,
since it needs SPL_OF_REAL which is not enabled in sandbox_spl.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index e33cde7..6de13d9 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -608,6 +608,11 @@
*/
int dm_gpio_request(struct gpio_desc *desc, const char *label);
+struct phandle_2_arg;
+int gpio_request_by_phandle(struct udevice *dev,
+ const struct phandle_2_arg *cells,
+ struct gpio_desc *desc, int flags);
+
/**
* gpio_get_list_count() - Returns the number of GPIOs in a list
*