diff options
Diffstat (limited to 'drivers/of/property.c')
| -rw-r--r-- | drivers/of/property.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/of/property.c b/drivers/of/property.c index 5f9eed79a8aa..b2ea1951d937 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -1271,6 +1271,28 @@ static struct device_node *parse_iommu_maps(struct device_node *np, return of_parse_phandle(np, prop_name, (index * 4) + 1); } +static struct device_node *parse_gpio_compat(struct device_node *np, + const char *prop_name, int index) +{ + struct of_phandle_args sup_args; + + if (strcmp(prop_name, "gpio") && strcmp(prop_name, "gpios")) + return NULL; + + /* + * Ignore node with gpio-hog property since its gpios are all provided + * by its parent. + */ + if (of_find_property(np, "gpio-hog", NULL)) + return NULL; + + if (of_parse_phandle_with_args(np, prop_name, "#gpio-cells", index, + &sup_args)) + return NULL; + + return sup_args.np; +} + static const struct supplier_bindings of_supplier_bindings[] = { { .parse_prop = parse_clocks, }, { .parse_prop = parse_interconnects, }, @@ -1296,6 +1318,7 @@ static const struct supplier_bindings of_supplier_bindings[] = { { .parse_prop = parse_pinctrl6, }, { .parse_prop = parse_pinctrl7, }, { .parse_prop = parse_pinctrl8, }, + { .parse_prop = parse_gpio_compat, }, { .parse_prop = parse_regulators, }, { .parse_prop = parse_gpio, }, { .parse_prop = parse_gpios, }, |