gpio: search for gpio label if gpio is not found through bank name
dm_gpio_lookup_name() searches for a gpio through
the bank name. But we have also gpio labels, and it
makes sense to search for a gpio also in the labels
we have defined, if no gpio is found through the
bank name definition.
This is useful for example if you have a wp pin on
different gpios on different board versions.
If dm_gpio_lookup_name() searches also for the gpio labels,
you can give the gpio an unique label name and search
for this label, and do not need to differ between
board revisions.
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Don't enable by default]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index af608b7..0e8ad95 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -46,6 +46,26 @@
is a mechanism providing automatic GPIO request and config-
uration as part of the gpio-controller's driver probe function.
+config DM_GPIO_LOOKUP_LABEL
+ bool "Enable searching for gpio labelnames"
+ depends on DM_GPIO
+ help
+ This option enables searching for gpio names in
+ the defined gpio labels, if the search for the
+ gpio bank name failed. This makes sense if you use
+ different gpios on different hardware versions
+ for the same functionality in board code.
+
+config SPL_DM_GPIO_LOOKUP_LABEL
+ bool "Enable searching for gpio labelnames"
+ depends on DM_GPIO && SPL_DM && SPL_GPIO_SUPPORT
+ help
+ This option enables searching for gpio names in
+ the defined gpio labels, if the search for the
+ gpio bank name failed. This makes sense if you use
+ different gpios on different hardware versions
+ for the same functionality in board code.
+
config ALTERA_PIO
bool "Altera PIO driver"
depends on DM_GPIO