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dm: gpio: Add of-platdata support

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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>
This commit is contained in:
Simon Glass
2021-08-07 07:24:12 -06:00
parent 3e57ad907c
commit 48609d0789
9 changed files with 93 additions and 9 deletions
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5
include/asm-generic/gpio.h
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@@ -608,6 +608,11 @@ int gpio_request_list_by_name(struct udevice *dev, const char *list_name,
*/
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
*