Hello Mika,
In your commit 9427ecbed46cc, you have modified the way the
"gpio-line-names" DT property is handled.
It seems that after that commit, many drivers fail to retrieve that
property. After investigation it seems to be because the driver does not
assign a parent to the gpio_chip.
Why is it necessary now to set a parent to the GPIO chip whereas it was
not necessary before ? In gpio_chip_add_data(), we have:
if (chip->parent) {
gdev->dev.parent = chip->parent;
gdev->dev.of_node = chip->parent->of_node;
}
#ifdef CONFIG_OF_GPIO
/* If the gpiochip has an assigned OF node this takes precedence */
if (chip->of_node)
gdev->dev.of_node = chip->of_node;
#endif
Therefore, as far as a chip->of_node is defined, shouldn't it be
possible to retrieve "gpio-line-names" property as before without parent ?
Is there an easy modification that can be done to your new function
devprop_gpiochip_set_names() in order to have the GPIO drivers work as
before ?
Regards
Christophe
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