On Tue, Oct 07, 2025 at 12:26:37PM +0200, Rasmus Villemoes wrote: > In scripts as well as interactively, it's much nicer to be able to > refer to GPIOs via their names defined in the device tree property > "gpio-line-names", instead of the rather opaque names derived from the > bank name with a _xx suffix. E.g. > > gpio read factory_reset FACTORY_RESET > if test $factory_reset = 1 ; then ... > > versus > > gpio read factory_reset gpio@481ac000_16 > if test $factory_reset = 1 ; then ... > > This is also consistent with the move on the linux/userspace side towards > using line names instead of legacy chip+offset or the even more legacy > global gpio numbering in sysfs. > > As this seems to only add about ~50 bytes of code to U-Boot proper, > and dm_gpio_lookup_name() most often ends up being GC'ed for SPL, so > adds no overhead there, adding yet another config knob (or two, if it > also needed an SPL variant) for this does not seem warranted. > > Signed-off-by: Rasmus Villemoes <[email protected]>
On a few platforms we now get a failure to build:
arm: + work_92105
+(work_92105) arm-linux-gnueabi-ld: drivers/gpio/gpio-uclass.o: in function
`dev_read_stringlist_search':
+(work_92105) include/dm/read.h:1078:(.text.dm_gpio_lookup_name+0x8c):
undefined reference to `ofnode_stringlist_search'
+(work_92105) make[1]: *** [Makefile:2029: u-boot] Error 1
+(work_92105) make: *** [Makefile:198: sub-make] Error 2
--
Tom
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