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| author |   Saravana Kannan <saravanak@google.com> | 2021-02-05 14:26:40 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-09 14:31:06 +0100 |
| commit | a9dd8f3c2cf3413d9302ef12e88181cf001c3ed8 (patch) | |
| tree | 0f0ac16deb755e6e41dbb9811fee417c2ce29744 /drivers/of | |
| parent | driver core: Add fw_devlink.strict kernel param (diff) | |
| download | linux-dev-a9dd8f3c2cf3413d9302ef12e88181cf001c3ed8.tar.xz linux-dev-a9dd8f3c2cf3413d9302ef12e88181cf001c3ed8.zip | |
of: property: Add fw_devlink support for optional properties
Not all DT bindings are mandatory bindings. Add support for optional DT
bindings and mark iommus, iommu-map, dmas as optional DT bindings.
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210205222644.2357303-5-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/property.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/of/property.c b/drivers/of/property.c index 94f3f6cc7667..79b68519fe30 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -1235,6 +1235,7 @@ static struct device_node *parse_##fname(struct device_node *np, \ struct supplier_bindings { struct device_node *(*parse_prop)(struct device_node *np, const char *prop_name, int index); + bool optional; }; DEFINE_SIMPLE_PROP(clocks, "clocks", "#clock-cells") @@ -1309,12 +1310,12 @@ static struct device_node *parse_interrupts(struct device_node *np, static const struct supplier_bindings of_supplier_bindings[] = { { .parse_prop = parse_clocks, }, { .parse_prop = parse_interconnects, }, - { .parse_prop = parse_iommus, }, - { .parse_prop = parse_iommu_maps, }, + { .parse_prop = parse_iommus, .optional = true, }, + { .parse_prop = parse_iommu_maps, .optional = true, }, { .parse_prop = parse_mboxes, }, { .parse_prop = parse_io_channels, }, { .parse_prop = parse_interrupt_parent, }, - { .parse_prop = parse_dmas, }, + { .parse_prop = parse_dmas, .optional = true, }, { .parse_prop = parse_power_domains, }, { .parse_prop = parse_hwlocks, }, { .parse_prop = parse_extcon, }, @@ -1368,6 +1369,11 @@ static int of_link_property(struct device_node *con_np, const char *prop_name) /* Do not stop at first failed link, link all available suppliers. */ while (!matched && s->parse_prop) { + if (s->optional && !fw_devlink_is_strict()) { + s++; + continue; + } + while ((phandle = s->parse_prop(con_np, prop_name, i))) { matched = true; i++; |